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CO2 Laser Glass Processing System


  • CO2 Laser Provides Clean and Uniform Heating
  • Fabricate End-Cap Terminations up to Ø5 mm
  • Automated XY and Rotational Alignment

Application Idea

Splicing of Ø20 µm Core / Ø400 µm Cladding Passive Fiber to Active Fiber

GPX4000LZ

VHF400

Fiber Holder Bottom Transfer Insert

VHT1

Transfer Clamp with Magnetic Lid

Glass Processor Workstations, Inserts, and Accessories All Sold Separately 

Related Items


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When splicing, the laser forms an annular beam shape that uniformly heats the fiber ends and then the two fibers are carefully pushed together. 

Click to Enlarge
Ø4.0 mm Silica End Cap Fused Onto Ø250 µm Silica Fiber

Click to Enlarge
Ø1.25 mm Silica End Cap Fused Onto Ø125 µm Fiber 

Features

  • Glass Processor Workstation with Two Heating Modes
    • Integrated 40 W, Air-Cooled CO2 Laser with Adjustable Annular Beam Output; No Consumables Needed
    • Filament Furnace Heating via Filament Assemblies (Replacement Filament Assemblies Sold Separately Below)
  • Create Low-Loss (~0.02 dB) Splices in Standard Glass Fibers (See Specs Tab for Details)
  • Make Adiabatic Tapers in Single Mode, Multimode, Polarization-Maintaining, and Specialty Fibers
  • Fabricate End-Cap Terminations up to Ø5 mm (For Larger End Caps; Contact Tech Support)
  • Automated XY and Rotation Alignment
  • Side-View / End-View Imaging and Splice Loss Determination using True Core Imaging™ Technology
  • Software with Process Development GUI and Splice Process Library (See Software Tab for More Information)
  • Customizable with Fiber Holder Inserts and Additional Options (Click Here for List of Components)

The GPX4000LZ offers the most advanced glass shaping features of our Vytran™ fiber processing workstations. Unlike our other glass processors, the furnace tower on the GPX4000LZ uses two user-exchangeable heat sources. The primary 40 W COlaser heat source enables the fabrication of advanced features such as large end caps (up to Ø5 mm; see examples below) or complex terminations. It also does not require purge gas or consumable filaments, which greatly reduces the maintenance needed. The laser optical head can be swapped for a standard filament fusion furnace that allows the use of existing filament-based recipes on the GPX4000LZ. The combination of these two modes provides users the flexibility to develop fabrication recipes that best suit their application. Fully-automated XY and rotational alignment using our True Core Imaging™ technology is compatible with both heating modes. The glass processing workstation, computer with process development and operation software, and power supply are integrated into a rolling cart for easy movement in the workspace.

The CO2 laser heat source outputs a 40 W (CW) beam that uniformly and directly heats the fiber end (see image above) leaving no residue or contamination on the fiber surface. High-performance axicon lenses are used to shape the laser beam into an annular (i.e., doughnut) beam shape. Two optical heads for focusing the laser beam are included with the workstation; the splice head is optimized for splicing and tapering processes, while the end-cap head is designed for heating and fusing large end caps onto the ends of optical fibers. 

The filament-based heat source, which uses either a graphite or iridium omega-shaped filament, can accommodate a wide range of fiber cladding diameters and specialty fiber types using the same system. Precise control over fiber position and orientation enables a number of advanced fiber processing applications from low-loss splicing in dissimilar fibers to the creation of adiabatic fiber tapers, fiber terminations, or fused fiber couplers. Three filaments are included with the GPX4000LZ and additional or replacement filaments can be purchased separately below.

True Core Imaging™
The GPX4000LZ employs our True Core Imaging technology to provide high-resolution images for fiber measurement and alignment. A digital CCD camera and mirror tower are integrated into the fiber processing workstation to allow for clear side-view and end-view images (see example images to the right) of the fiber cladding and core. This imaging feature allows for automated measurement of fiber properties (core/cladding diameters, cleave angle, etc.), provides feedback for the automated alignment system, and enables calculation of an accurate splice loss for splices with similar or dissimilar fiber types. The VHB00 or VHB05 top insert (sold below) is required in order to use automated end-view alignment.

Options and Accessories
A complete glass processor requires the purchase of the GPX4000LZ workstation, two top inserts (sold separately below), and two bottom inserts (sold separately below). Operating in filament heating mode requires the purchase of a >99.999% purity argon gas tank (not available from Thorlabs); three filament assemblies are included with the GPX4000LZ and additional or replacement filaments can be purchased separately below. An ultrasonic cleaner for preparing fibers for splicing can be purchased separately below.

Several optional add-ons are available for these systems to enable specialized applications. The GPXLZWCS Liquid Cooling System helps cool the furnace assembly during extended heating using the filament heating mode and is recommended for customers interested in creating long fiber tapers. For cleaning fibers prior to splicing or end capping, the USC1 uses ultrasonic waves to remove debris on small components.

Compatible Vytran™ Fiber Processing Systems
Fiber Preparation Station
(Strip and Clean)
Large-Diameter Fiber Cleavers Large-Diameter Fiber Splicer CO2 Laser Glass Processing System
(Splice and Taper)

Automated Glass Processing Systems with Integrated Cleaver
(Cleave, Splice, and Taper)
Automated Glass Processing Systems
(Splice and Taper)
Recoaters, Proof Testers,
and Recoaters with Proof Testers
Heating Mode CO2 Laser Mode Filament Mode
Heat Source Specifications
Laser Wavelength 10.55 µm (Minimum)
10.63 µm (Maximum)
N/A
Laser Output Power 40 Wa N/A
Laser Safety Features Metal Cover with Interlock
Class 1 Enclosure
Automatic Laser Power Cutoff
Triple Redundancy Safety Measures
N/A
Laser Beam Control Closed-Loop Feedback System N/A
Filament Temperature Range N/A Room Temperature to 3000 °C
Splicing Specifications
Fiber Types (Non PM) Single Mode, Multimode, Photonic Crystal, Large Mode Area, Non-Circularb
Fiber Types (PM) Panda, Elliptical, Bow-Tieb
Accepted Fiber Diameters Splice: 250 µm Coating - 2 mm 
End Caps: 250 µm Coating - 5 mmc
Splice: Up to 1.7 mm (Max)
Splice Loss -d 0.02 dB (Typical)e
Splice Loss Estimation True Core Imaging™ Technology
Splice Strength >250 kpsi (Typical)f
Strength Enhancement N/A Fire Polish
Polarization Cross Talk Panda: >35 dB; Other Fiber Types: >30 dB
Fiber Inspection Features
Fiber Side Viewing True Core Imaging™ Technology
Fiber End Viewing Facet Inspection and PM Core Alignment (VHB00 or VHB05 Top Insert Required)
Core / Cladding / Fiber Diameter Automated Measurement
End Face Inspection Inspection via GUI Display
Cleave Angle Automated Measurement
Fiber and End Face Alignment
Furnace Z-Axis Travel 85 mm (Max) 180 mm (Max)
Fiber Holding Block (FHB) Z-Axis Movement 105 mm (Max) 180 mm (Max)
FHB Z-Axis Movement Resolution 0.25 µm via Stepper Motor
XY Axis Fiber Positioning Resolution  0.2 µm via Stepper Motor
Rotation Alignment Automated End-View Alignment: Panda, Bow Tie, Elliptical-Core Fibers
Automatic Alignment with External Extinction Ratio Feedback: PM Fiber
Rotation Drive Resolution 0.02°
Rotation Travel 190°
Tapering
Tapering Length  Up to 140 mm (Max)g Up to 150 mm (Max)g
Tapering Ratio (Max) Adiabatic Tapers up to 1:10 (Ratios Up to 1:150+ Possible)
Tapering Speed 1 mm/s (Typical)h
Adiabatic Tapering Loss <0.2 dB (Typical for Sub-Micron Tapers)
Computer and Software
PC Computer Included
Splice Files Built-In Library for Common Fibers and Processes
Physical
Size 36.4" x 31.3" x 44.2" (925 mm x 795 mm x 1123 mm)
Weight 300 lbs (136 kg)
Power Input 100 - 240 VAC, 47 - 63 Hz, 14.7 A
Gas Supplyf N/A Argon, >99.999% Purity at 12 psig (Not Included)
Environmental
Operating Temperature 15 to 40 °C
Altitude Range 0 to 2000 m Above Sea Level
Operating Humidity 0 to 75% Relative Humidity (Non-Condensing)
Storage Temperature -20 to 60 °C
Storage Humidity 0 to 90% Relative Humidity (Non-Condensing)
  • Output Power Measured at 25 °C
  • Other fiber types than those listed are compatible. Contact Tech Support to determine if your fiber type can be used.
  • Contact Tech Support if you are interested in fabricating end caps larger than 5 mm.
  • We are currently obtaining optical measurements to verify splice loss performance. A typical value will be added once it becomes available.
  • For Ø125 µm Cladding Single Mode Fiber
  • Measured for single mode fiber prepared using an LDC-400 Series Cleaver or other appropriate fiber preparation equipment.
  • Dependent on Taper Geometry
  • Tapering speed depends highly on the type of process used. 1 mm/s is a typical speed for a standard tapering process.

Fiber Holder Inserts Selection Guide

Fiber Holder Inserts, which are designed to hold various sized fibers within the glass processors, must be purchased separately. The bottom inserts have V-grooves to hold the fiber, while the top inserts each feature a recessed, flat surface that clamps the fiber against the V-groove in the bottom insert. Each top and bottom insert is sold individually, as the fiber outer diameter clamped by the left and right holding blocks may not be the same. At least two top inserts and two bottom inserts are required to operate the glass processor.

The table below indicates the maximum and minimum outer diameters that can be accommodated by different combinations of top and bottom inserts. It also indicates how far offset the fiber will be for recommended combinations of top and bottom inserts. Note that this outer diameter may be the fiber cladding, jacket, or buffer. If one side of the fiber is being discarded, it is preferable to clamp onto the cladding of this section except in special cases (such as non-circular fiber) where the coating or buffer may be preferable. Sections of fiber that are not being discarded should always be clamped on the coating or buffer in order to avoid damaging the glass. This may require different sets of fiber holder inserts to be used in the left and right holding blocks. In this case, it is important to minimize the difference in the offsets introduced by the left and right sets of inserts when attempting to produce high-quality splices.

V-Groove Inserts
Each V-groove can accommodate a range of fiber sizes.
Legend
 
Best Fit
 
Second Best Fit: Try these options if the best fit does not incorporate your fiber sizes.
 
Third Best Fit: Try these options if the other two categories do not incorporate your fiber sizes.

Fiber Insert Selection Chart

  1. First, select the bottom insert that matches your fiber size most closely.
    Example: For a Ø800 µm fiber, the VHF750 insert is the closest match, since it is only 50 µm smaller.
  2. On the chart below, look to the right of your chosen bottom insert. Select a compatible top insert based on the accepted diameter size range shown in each cell.
    Example: For the Ø800 µm example fiber from step 1, the green cell is in the 750 µm groove column for the VHA05 top insert, which has two grooves. The numbers listed in the green cell indicate that this combination of inserts is good for fibers from 728 to 963 µm in diameter. Our Ø800 µm fiber is within this range, so this is a good choice. There are several other options as well that will accommodate a Ø800 µm fiber as well, but the green shading in the chart indicates that the 750 µm groove in the VHA05 provides the best fit.
  3. The second line of numbers in each cell shows the range of offsets that can be expected for any given combination of top and bottom inserts. When selecting inserts for the right and left fiber holding blocks, try to minimize the offsets between the pairs of inserts on each side.
    Example: If we choose a VHF750 bottom insert and the Ø750 µm groove in the VHA05 top insert, we can use fiber as small as 728 µm, in which case the center of the fiber would sit 23 µm below the surface of the bottom insert. We could also clamp a fiber as large as 963 µm, in which case the center of the fiber would sit 213 µm above the surface of the bottom insert. We could interpolate to find the offset experienced by our hypothetical 800 µm fiber, but it turns out that in a 60° V-groove, the offset is equal to the outer diameter difference. So in our example, that means that the center of our fiber is going to sit 50 µm above the bottom insert surface, since it is 50 µm larger than the fiber that the bottom insert was designed for (800 - 750 = 50).
  4. Holding blocks designed for fibers less than Ø1000 µm have vacuum holes, designed to aid in aligning small fiber within the groove, while bottom inserts for fibers of Ø1000 µm or larger do not have these holes. The glass processors have a vacuum pump that provides a small holding force via these holes, keeping small fibers in place as the clamps are lowered. Inserts with vacuum holes are indicated by a superscript "d" in the table below.
Top Insert Item # VHA00a
VHB00b
VHA00a VHA05c
VHB05b
VHA10c VHA15c VHA20c VHA25 VHA30
Accepted Diameter (Nominal) ≤320 µm 400 µm 500 µm 750 µm 1000 µm 1250 µm 1500 µm 1750 µm 2000 µm 2250 µm 2500 µm 3000 µm
Bottom
Insert
Item #
Accepted
Diameter
(Nominal)
Min / Max Accepted Diameter (µm)
Min / Max Fiber Offset (µm)
VHF160d,e 160 µm 112 / 208
-49 / 48
- - - - - - - - - - -
VHF250d,e
250 µm 177 / 320
-73 / 69
275 / 323
23 / 74
- - - - - - - - - -
VHF400d,e
400 µm 279 / 519
-122 / 119
377 / 517
-23 / 117
410 / 519
-9 / 119
- - - - - - - - -
VHF500d,e
500 µm 346 / 592
-153 / 93
447 / 647
-53 / 147
476 / 711
-24 / 211
560 / 795
61 / 296
- - - - - - - -
VHF750d,e
750 µm 516 / 759
-234 / 9
617 / 970
-132 / 221
643 / 878
-107 / 128
728 / 963
-23 / 213
812 / 1047
62 / 297
- - - - - - -
VHE10c 1000 µm - - 773 / 1008
-172 / 63
858 / 1093
-88 / 147
943 / 1178
-3 / 232
1036 / 1271
90 / 325
- - - - - -
1250 µm - - - 1034 / 1269
-176 / 59
1119 / 1354
-91 / 144
1212 / 1447
2 / 237
1288 / 1523
78 / 313
- - - - -
VHE15c 1500 µm - - - - 1280 / 1515
-172 / 63
1373 / 1608
-79 / 156
1449 / 1684
-2 / 233
1534 / 1769
82 / 314
- - - -
1750 µm - - - - - 1534 / 1770
-159 / 76
1611 / 1846
-83 / 152
1695 / 1930
2 / 237
1772 / 2007
78 / 313
- - -
VHE20c 2000 µm - - - - - - 1787 / 2022
-171 / 64
1871 / 2106
-86 / 149
1947 / 2183
-10 / 225
2032 / 2267
74 / 309
- -
2250 µm - - - - - - - 2033 / 2268
-167 / 68
2109 / 2344
-91 / 144
2193 / 2429
-6 / 229
2278 / 2513
78 / 313
-
VHE25 2500 µm - - - - - - - - 2270 / 2505
-172 / 64
2355 / 2590
-87 / 148
2439 / 2675
-2 / 233
2609 / 2844
167 / 402
VHE30 3000 µm - - - - - - - - - 2692 / 2944
-256 / -4
2777 / 3029
-171 / 81
2946 / 3198
-2 / 250
  • One side of the VHA00 is flat to provide additional clamping force for fibers with very small outer diameters.
  • The VHB00 and VHB05 top inserts are equipped with an indent for LED illumination of the fiber end faces.
  • These inserts are dual sided to accomodate two different ranges of fiber outer diameters.
  • These bottom inserts have vacuum holes to aid in aligning small fibers when used with the glass processors.
  • These transfer inserts are longer and can be used with the VHT1 to transport fiber between the GPX Glass Processors, LDC401 and LDC401A Fiber Cleavers, and FPS300 Fiber Preparation Station

Example Splice, Taper, and End-Cap Files

  • FTAV2 (V2) Filament Burn-In and Normalization
  • Ø125 µm Single Mode Fiber Splice
  • Ø125 µm Polarization-Maintaining Fiber Splice
  • FTAV4 (V4) Filament Burn-In and Normalization
  • Ø400 µm Fiber Splice
  • Ø400 µm to Ø200 µm Taper

Each glass processor workstation is shipped with a PC and monitor pre-installed with the GUI software for operating the glass processor. An abbreviated library of splice process files, listed to the right, is included for common splicing and tapering procedures. The GUI and splice library software enables users to create their own splice files for new processes or to customize existing files as necessary. Please contact Tech Support for inquiries regarding your specific application. 

The sections below illustrate several fiber splicing and tapering applications that can be programmed through the software GUI.


Click to Enlarge
Figure 1. Screenshot of PM Fiber Alignment Configuration Window

End-View Alignment 
End-view alignment is used for polarization-maintaining fibers such as elliptical-core fiber (PM or PZ), panda or bow-tie polarization-maintaining fiber, or a hybrid splice between any of these. These types of fiber require a rotation alignment in addition to the XY alignment to align the stress regions within the cladding region.

The end-view alignment process is initiated by pulling the fibers back so that an end-view mirror can be inserted between two fiber end faces. An LED illuminates the fiber cladding, allowing the software to image the fiber end. Then, the image of the fiber end face is displayed and used to automatically align the cores of the two fibers. PM alignment parameters can be set for each fiber type as shown Figure 1 to the right. This window consists of four parameters: diameter (fiber cladding), fiber type, and two PM geometry parameters for both the left and right fiber. If these parameters are not known, it is possible to directly measure them using the displayed image of the fiber end face.


Click to Enlarge
Figure 2. Screenshot of Taper Geometry Customization Window

Fiber Taper Customization
Users can define the geometry of fiber tapers using the Taper Properties menu, shown in Figure 2 to the left.

During the tapering process, three different regions are created. Initially, the fiber is elongated and tapered under constant heating creating the "down taper" region where the fiber diameter is decreasing. Once the fiber has been tapered down to a desired diameter, a constant rate of elongation is applied so that there is a region with a reduced, but constant diameter, known as the "waist" of the fiber. Finally, the pulling force on the fiber is reduced until finally it is no longer elongating, creating the “up taper.” The filament temperature and pull velocities are controlled to achieve the desired geometry of the fiber.


Click to Enlarge
Figure 3. Screenshot of Tension Monitor and Control System

Tension Monitoring System
The Tension Monitoring System (shown in Figure 3 to the right) is included with all Vytran glass processors to provide feedback during a tapering process. Users can pre-load a tension to the fiber before heating the fiber to begin the tapering process and also use the tension feedback to modify the taper process parameters as necessary.

As an example, a standard Ø400 to Ø200 µm taper should be pre-tensioned to approximately 20 g. The desired pre-tension is applied by pulling the fiber in fine steps using one of the fiber holding blocks. During the taper process, the fiber tension is monitored to help adjust the tension parameters and improve the resulting taper. For example, if the tension drops to 0 or negative values, the heating should be decreased because the glass has been softened too much. Conversely, if the tension increases beyond a given set point, heating should be increased because the fiber has not been sufficiently softened. 

Laser Safety and Classification

Safe practices and proper usage of safety equipment should be taken into consideration when operating lasers. The eye is susceptible to injury, even from very low levels of laser light. Thorlabs offers a range of laser safety accessories that can be used to reduce the risk of accidents or injuries. Laser emission in the visible and near infrared spectral ranges has the greatest potential for retinal injury, as the cornea and lens are transparent to those wavelengths, and the lens can focus the laser energy onto the retina. 

Laser Barriers Laser Safety Signs
Laser Glasses Alignment Tools Shutter and Controllers
Laser Viewing Cards Blackout Materials Enclosure Systems

Safe Practices and Light Safety Accessories

  • Thorlabs recommends the use of safety eyewear whenever working with laser beams with non-negligible powers (i.e., > Class 1) since metallic tools such as screwdrivers can accidentally redirect a beam.
  • Laser goggles designed for specific wavelengths should be clearly available near laser setups to protect the wearer from unintentional laser reflections.
  • Goggles are marked with the wavelength range over which protection is afforded and the minimum optical density within that range.
  • Laser Safety CurtainsLaser Barriers and Blackout Materials can prevent direct or reflected light from leaving the experimental setup area.
  • Thorlabs' Enclosure Systems can be used to contain optical setups to isolate or minimize laser hazards.
  • A fiber-pigtailed laser should always be turned off before connecting it to or disconnecting it from another fiber, especially when the laser is at power levels above 10 mW.
  • All beams should be terminated at the edge of the table, and laboratory doors should be closed whenever a laser is in use.
  • Do not place laser beams at eye level.
  • Carry out experiments on an optical table such that all laser beams travel horizontally.
  • Remove unnecessary reflective items such as reflective jewelry (e.g., rings, watches, etc.) while working near the beam path.
  • Be aware that lenses and other optical devices may reflect a portion of the incident beam from the front or rear surface.
  • Operate a laser at the minimum power necessary for any operation.
  • If possible, reduce the output power of a laser during alignment procedures.
  • Use beam shutters and filters to reduce the beam power.
  • Post appropriate warning signs or labels near laser setups or rooms.
  • Use laser sign lightboxes if operating Class 3R or 4 lasers (i.e., lasers requiring the use of a safety interlock).
  • Do not use Laser Viewing Cards in place of a proper Laser Barrier or Beam Trap.

 

Laser Classification

Lasers are categorized into different classes according to their ability to cause eye and other damage. The International Electrotechnical Commission (IEC) is a global organization that prepares and publishes international standards for all electrical, electronic, and related technologies. The IEC document 60825-1 outlines the safety of laser products. A description of each class of laser is given below:

Class Description Warning Label
1 This class of laser is safe under all conditions of normal use, including use with optical instruments for intrabeam viewing. Lasers in this class do not emit radiation at levels that may cause injury during normal operation, and therefore the maximum permissible exposure (MPE) cannot be exceeded. Class 1 lasers can also include enclosed, high-power lasers where exposure to the radiation is not possible without opening or shutting down the laser.  Class 1
1M Class 1M lasers are safe except when used in conjunction with optical components such as telescopes and microscopes. Lasers belonging to this class emit large-diameter or divergent beams, and the MPE cannot normally be exceeded unless focusing or imaging optics are used to narrow the beam. However, if the beam is refocused, the hazard may be increased and the class may be changed accordingly.  Class 1M
2 Class 2 lasers, which are limited to 1 mW of visible continuous-wave radiation, are safe because the blink reflex will limit the exposure in the eye to 0.25 seconds. This category only applies to visible radiation (400 - 700 nm).  Class 2
2M Because of the blink reflex, this class of laser is classified as safe as long as the beam is not viewed through optical instruments. This laser class also applies to larger-diameter or diverging laser beams.  Class 2M
3R Lasers in this class are considered safe as long as they are handled with restricted beam viewing. The MPE can be exceeded with this class of laser, however, this presents a low risk level to injury. Visible, continuous-wave lasers are limited to 5 mW of output power in this class.  Class 3R
3B Class 3B lasers are hazardous to the eye if exposed directly. However, diffuse reflections are not harmful. Safe handling of devices in this class includes wearing protective eyewear where direct viewing of the laser beam may occur. In addition, laser safety signs lightboxes should be used with lasers that require a safety interlock so that the laser cannot be used without the safety light turning on. Class-3B lasers must be equipped with a key switch and a safety interlock.  Class 3B
4 This class of laser may cause damage to the skin, and also to the eye, even from the viewing of diffuse reflections. These hazards may also apply to indirect or non-specular reflections of the beam, even from apparently matte surfaces. Great care must be taken when handling these lasers. They also represent a fire risk, because they may ignite combustible material. Class 4 lasers must be equipped with a key switch and a safety interlock.  Class 4
All class 2 lasers (and higher) must display, in addition to the corresponding sign above, this triangular warning sign  Warning Symbol

Product Demonstrations

Thorlabs has demonstration facilitates for the Vytran™ fiber glass processing systems offered on this page within our Morganville, New Jersey and Shanghai, China offices. We invite you to schedule a visit to see these products in operation and to discuss the various options with a fiber processing specialist. Please schedule a demonstration at one of our locations below by contacting technical support. We welcome the opportunity for personal interaction during your visit!

Thorlabs China
Shanghai, China

Room A101, No.100, Lane 2891, South Qilianshan Road
Shanghai 200331
China

Appointment Scheduling and Customer Support

Thorlabs' China Office
Click to Enlarge

Thorlabs Vytran USA
Morganville, New Jersey, USA

1400 Campus Dr
Morganville, NJ 07751
USA

Appointment Scheduling and Customer Support

Thorlabs' Morganville Office
Click to Enlarge


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Vytran™ Optical Fiber Glass Processor Selection Guide
Item # GPX3400 GPX3600 GPX3800 GPX3850 GPX4000LZ
Fiber Cladding Diameter 80 µm to 1000 µm yes yes yes yes -
Up to 1.25 mm yes yes yes yes -
Up to 1.7 mm - yes - yes yesa
250 µm to 2 mm - - - - yesb
250 µm to 5 mm - - - - yesc
Fiber Type Multimode yes yes yes yes yes
Single Mode yes yes yes yes yes
Double Clad yes yes yes yes yes
Polarization Maintaining yes yes yes yes yes
Automated Measurement and Alignment yes yes yes yes yes
End-View Illumination and Imagingb yes yes yes yes yes
Tension Monitor and Control System yes yes yes yes yes
Integrated Fiber Cleaver - - yes yes -
Real-Time Hot Image Monitoring  - - yes yes yes
Liquid Cooling System Optional Add-On yes Optional Add-On yes Optional Add-On
Fused Taper Software Enhancement and Handling Fixtures Optional Add-On -
  • For Splicing Using Filament Heating Mode
  • For Splicing Using CO2 Laser Heating Mode
  • For Splicing End Caps Using CO2 Heating Mode
  • Requires VHB00 or VHB05 Top Insert for LED Illumination

CO2 Laser Glass Processor Workstation

Components Included

  • Glass Processor Workstation in Rolling Cart
    • Air-Cooled 40 W CO2 Laser
    • Optical Splice Head and End-Cap Head
    • Integrated Computer with Monitor, Keyboard, and Mouse
    • Software Interface with Example Splice Files
    • Vacuum Pump for Bottom Fiber Inserts
    • Two Gooseneck Lights for Illumination
    • Drop Shelf
  • Regulator for Argon Gas Tank with CGA-580 and DIN 477 Number 6 Connectors
  • 1/8" Teflon Tube for Argon Gas
  • Filament Assemblies (Item #'s FTAV4, FTAV6, and FTAT4)
  • Tool Kit with Hex Keys

Must be Purchased Separately

Optional Accessories and Replacement Items

  • Includes Glass Processor Workstation and Computer with Control Software
  • CO2 Laser and Filament Fusion Heating Modes
  • Automatic XY and Rotational Alignment
  • Ideal for Single Mode, Multimode, PM, and Specialty Fibers
  • Low Cost of Ownership

The GPX4000LZ CO2 Laser Glass Processor Workstation integrates the furnace tower, fiber holding blocks, computer with operation and process development software, and other operational equipment into an easy-to-use rolling cart that can be positioned anywhere in the lab. 

This workstation features automatic XY and rotational alignment of the fiber and is specially designed for processing polarization-maintaining fibers as well as specialty fibers with microstructured cores using the True Core Imaging™ Technology. Precision fiber handlers can translate and position a fiber in XY with a resolution of 0.25 µm and rotate a fiber up to 190° with a resolution of 0.02°. The included fiber holders can translate along the fiber axis up to 105 mm or 180 mm using the CO2 laser or filament heating modes, respectively. This allows the furnace to heat large portions of the input fiber(s) and is ideal for many applications including thermally diffusing core dopants to achieve low-loss splices between highly dissimilar fibers or for fabricating long adiabatic fiber tapers.

The workstation includes the fiber holders, optical heads, furnace tower, CCD camera for imaging, PC and monitor pre-installed with the control software, and mirror tower for side- and end-view imaging. For operating in the filament heating mode, the workstation is fitted with a high-purity Teflon gas line and a gas regulator equipped with a CGA-580 output port; a DIN 477 Number 6 output port connector is also included. Replacement filaments can be purchased separately below.

Top and bottom inserts for the fiber holders, both of which are required to operate the glass processor workstation, can be purchased separately below.

Installation and training by one of our application engineers is recommended for this system; please contact Tech Support for more details.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available / Ships
GPX4000LZ Support Documentation
GPX4000LZNEW!CO2 Laser Glass Processor Workstation
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Lead Time

Fiber Holder Top Inserts - Two Required

Item # Side 1 Accepted
Diameter (Min/Max)
Side 2 Accepted
Diameter (Min/Max)
VHB00a 57 µm / 759 µmb  N/A
VHB05a 410 µm / 1008 µm 560 µm / 1269 µm
VHA00 57 µm / 759 µmb 275 µm / 970 µm
VHA05 410 µm / 1008 µm 560 µm / 1269 µm
VHA10 812 µm / 1515 µm 1036 µm / 1770 µm
VHA15 1288 µm / 2022 µm 1534 µm / 2268 µm
VHA20 1772 µm / 2505 µm 2032 µm / 2944 µm
VHA25 2278 µm / 3029 µm N/A
VHA30 2609 µm / 3198 µm N/A
  • These top inserts are equipped with an indent for LED illumination of the fiber end faces.
  • Side 1 of the VHA00 and VHB00 is flat to provide additional clamping force for fibers with very small diameters.

Fiber Holder Inserts, which consist of one top insert and either a bottom or transfer insert, are placed in the fiber holding blocks of the optical glass processor to secure the fiber during splicing or tapering. The inserts clamp the cladding, buffer, or coating of the fiber and can accommodate outer diameters of up to 3.198 mm. Please refer to the Fiber Holder Insert tab for more information on pairing the top and bottom inserts sold here.

Two types of top inserts are compatible with the GPX4000LZ. The VHA standard top inserts come in single-sided and dual-sided versions. These standard inserts can also be used in the Automated Glass Processors, LDC401 Series of Fiber Cleavers, FPS300 Stripping and Cleaning Station, and LFS4100 Splicing System. The VHB00 and VHB05 top inserts feature an indent for LED illumination from the automated glass processor workstations and are necessary for end-view imaging and alignment of the cores of polarization-maintaining and microstructured specialty fibers.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available / Ships
VHA00 Support Documentation
VHA00Dual-Sided Fiber Holder Top Insert, Ø57 µm - Ø970 µm
$159.00
Today
VHA05 Support Documentation
VHA05Dual-Sided Fiber Holder Top Insert, Ø410 µm - Ø1269 µm
$159.00
Today
VHA10 Support Documentation
VHA10Dual-Sided Fiber Holder Top Insert, Ø812 µm - Ø1770 µm
$159.00
Today
VHA15 Support Documentation
VHA15Dual-Sided Fiber Holder Top Insert, Ø1288 µm - Ø2268 µm
$159.00
Today
VHA20 Support Documentation
VHA20Dual-Sided Fiber Holder Top Insert, Ø1772 µm - Ø2944 µm
$159.00
Today
VHA25 Support Documentation
VHA25Fiber Holder Top Insert, Ø2278 µm - Ø3029 µm
$159.00
Today
VHA30 Support Documentation
VHA30Fiber Holder Top Insert, Ø2609 µm - Ø3198 µm
$159.00
Today
VHB00 Support Documentation
VHB00Fiber Holder Top Insert with LED Illumination Indent, Ø57 µm - Ø759 µm
$169.00
Today
VHB05 Support Documentation
VHB05Dual-Sided Fiber Holder Top Insert with LED Illumination Indent, Ø410 µm - Ø1269 µm
$169.00
Today

Fiber Holder Bottom Inserts - Two Required

  • Bottom Fiber Inserts with V-Grooves for Fiber Holding Blocks
  • Compatible with Cladding/Coating Diameters from 112 µm to 3.198 mm (See the Fiber Holder Insert Tab for Information on Choosing Inserts)
  • Transfer Inserts for Moving Fiber Between Vytran™ Systems Available
  • Inserts with Vacuum Holes for Aligning Smaller Fibers (<Ø1047 µm) in V-Groove Available
  • Fused Taper Insert (Item # VHD250S) Holds Two Ø250 µm Fibers in Parallel
Item # Type Side 1 Accepted
Diameter (Min/Max)
Side 2 Accepted
Diameter (Min/Max)
Vacuum
Holes
VHF160 Transfer 112 µm / 208 µm N/A Yes
VHF250 Transfer 177 µm / 320 µm N/A Yes
VHD250Sa Side-by-Side 250 µm N/A Yes
VHF400 Transfer 279 µm / 519 µm N/A Yes
VHF500 Transfer 346 µm / 795 µm N/A Yes
VHF750 Transfer 516 µm / 1047 µm N/A Yes
VHE10 Standard 773 µm / 1271 µm 1034 µm / 1523 µm No
VHE15 Standard 1280 µm / 1769 µm 1534 µm / 2007 µm No
VHE20 Standard 1787 µm / 2267 µm 2033 µm / 2513 µm No
VHE25 Standard 2270 µm / 2844 µm N/A No
VHE30 Standard 2692 µm / 3198 µm N/A No
  • The VHD250S bottom insert features a V-groove for fitting two Ø250 µm fibers next to each other in parallel for manufacturing fused fiber tapers.

Fiber Holder Inserts, which consist of one top insert and either a bottom or transfer insert, are placed in the fiber holding blocks of the optical glass processor to secure the fiber during splicing or tapering. Bottom inserts are magnetically held within the fiber holding blocks of the glass processors and other compatible systems. The V-groove machined into the bottom inserts ensures the fiber is centered within the fiber holder; inserts with different V-groove sizes are available (see the Fiber Holder Insert tab for more information on pairing top and bottom inserts).

Three types of bottom inserts are compatible with the glass processors: transfer bottom inserts, standard bottom inserts, and a side-by-side bottom insert. Transfer bottom inserts (indicated with Item #'s starting with VHF) allow for a single fiber to be transferred between the LDC401 Series of Fiber Cleavers, FPS300 Stripping and Cleaning Station, and the GPX4000LZ CO2 Laser Glass Processor with minimal loss of alignment. For example, a fiber can be placed in a transfer insert and cleaved using the LDC401 cleaver, then the entire transfer insert can be placed in the LFS4100 Splicing System for splicing. This process works because the transfer inserts are precisely located within each Vytran system, and the VHT1 Transfer Clamp (sold directly below) prevents axial movement of the fiber during transport. Transfer inserts are equipped with vacuum holes that provide a small suction force to hold the fiber in place. All of these transfer inserts require the VHT1 Transfer Clamp (sold below); transfer inserts for fiber outer diameters ≤550 µm also require a Graphite V-Groove (sold below).

Standard Fiber Holder Bottom Inserts (indicated by Item #'s starting with VHE) can be used with fibers with large-diameter fibers. These inserts come in single-sided and dual-sided versions. The standard bottom inserts can also be used in the LDC401 Series of Fiber Cleavers, FPS300 Stripping and Cleaning Station, Automated Glass Processors and LFS4100 Splicing System. Unlike transfer inserts, alignment of the fibers will not be maintained when these inserts are transferred between systems.

The VHD250S Side-by-Side Bottom Insert is designed for applications requiring two fibers to be tapered and fused together, such as wavelength division multiplexers or fused fiber couplers. This insert is equipped to hold two Ø250 µm cladding fibers in parallel. The VHA00 or VHB00 top insert should be used for optimal clamping of the fiber.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available / Ships
VHF160 Support Documentation
VHF160Fiber Holder Transfer Bottom Insert, Ø112 µm - Ø208 µm
$296.00
Today
VHF250 Support Documentation
VHF250Fiber Holder Transfer Bottom Insert, Ø177 µm - Ø320 µm
$296.00
Today
VHD250S Support Documentation
VHD250SSide-by-Side Fiber Holder Bottom Insert, Ø250 µm
$383.00
Today
VHF400 Support Documentation
VHF400Fiber Holder Transfer Bottom Insert, Ø279 µm - Ø519 µm
$296.00
Today
VHF500 Support Documentation
VHF500Fiber Holder Transfer Bottom Insert, Ø346 µm - Ø795 µm
$296.00
Today
VHF750 Support Documentation
VHF750Fiber Holder Transfer Bottom Insert, Ø516 µm - Ø1047 µm
$296.00
Today
VHE10 Support Documentation
VHE10Dual-Sided Fiber Holder Bottom Insert, Ø773 µm Ø1523 µm
$199.00
Today
VHE15 Support Documentation
VHE15Dual-Sided Fiber Holder Bottom Insert, Ø1280 µm - Ø2007 µm
$199.00
Today
VHE20 Support Documentation
VHE20Dual-Sided Fiber Holder Bottom Insert, Ø1787 µm - Ø2513 µm
$199.00
Today
VHE25 Support Documentation
VHE25Fiber Holder Bottom Insert, Ø2270 µm - Ø2844 µm
$199.00
Today
VHE30 Support Documentation
VHE30Fiber Holder Bottom Insert, Ø2692 µm - Ø3198 µm
$199.00
Today

Fiber Transfer Clamp and Graphite V-Grooves - Required for VHF Transfer Bottom Inserts

Item # Accepted Diameter
(Min/Max)
Length Heating
Mode
VHG125L 80 µm / 125 µm 0.594" Filament
VHG200 150 µm / 200 µm 0.313" Filament
VHG250 200 µm / 250 µm 0.313" Filament
VHG250XLa 200 µm / 300 µm 1.094" CO2 Laser
VHG300 250 µm / 300 µm 0.313" Filament
VHG350 300 µm / 350 µm 0.313" Filament
VHG400 350 µm / 400 µm 0.313" Filament
VHG400XLa 300 µm / 400 µm 1.094" CO2 Laser
VHG450 400 µm / 450 µm 0.313" Filament
VHG500 450 µm / 500 µm 0.313" Filament
VHG500XLa 400 µm / 500 µm 1.094" CO2 Laser
VHG550 500 µm / 550 µm 0.313" Filament
  • These inserts are longer to support the fiber over a larger distance.
  • Clamp and Graphite V-Grooves Used with Transfer Bottom Inserts to Move Fiber Between Vytran™ Systems
  • One VHT1 Transfer Clamp Required with Transfer Bottom Inserts
  • Graphite V-Groove for Supporting Smaller Fibers from Ø125 µm to Ø550 µm During Splicing
  • Transfer Clamps are Also Compatible with LDC401 Series of Fiber Cleavers and FPS300 Stripping and Cleaning Station

These Transfer Clamps and V-Grooves are used with the VHF Transfer Bottom Inserts sold directly above to move a single fiber between various Vytran™ systems with minimal loss of alignment. For example, a fiber can be placed in a transfer insert and cleaved using the LDC401 Fiber Cleaver. Then, the entire transfer insert and fiber can be moved to a glass processor for splicing.

The VHT1 clamp is equipped with a magnetic lid that secures transfer inserts and prevents axial movement of the fiber. It can also be used to hold the insert during transport without touching the fiber itself. 

For fibers with diameters ≤550 µm, a graphite V-groove must be purchased to support the fiber when splicing (please see the size table to the right for more information). The 1.094" long V-grooves are designed for use only with the GPX4000LZ CO2 laser heating mode, while the 0.313" and 0.594" long V-grooves are used with the filament heating mode. The graphite V-grooves are secured by tightening the two setscrews in the transfer insert.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available / Ships
VHT1 Support Documentation
VHT1Transfer Clamp with Magnetic Lid for Fiber Holder Transfer Inserts
$230.00
Today
VHG125L Support Documentation
VHG125LExtended Graphite V-Groove, Ø80 µm - Ø125 µm, 0.594" Length
$143.00
Today
VHG200 Support Documentation
VHG200Graphite V-Groove, Ø150 µm - Ø200 µm, 0.313" Length
$133.00
Today
VHG250 Support Documentation
VHG250Graphite V-Groove, Ø200 µm - Ø250 µm, 0.313" Length
$133.00
Today
VHG250XL Support Documentation
VHG250XLNEW!Graphite V-Groove, Ø200 µm - Ø300 µm, 1.094" Length
$160.00
Lead Time
VHG300 Support Documentation
VHG300Graphite V-Groove, Ø250 µm - Ø300 µm, 0.313" Length
$133.00
Today
VHG350 Support Documentation
VHG350Graphite V-Groove, Ø300 µm - Ø350 µm, 0.313" Length
$133.00
Today
VHG400 Support Documentation
VHG400Graphite V-Groove, Ø350 µm - Ø400 µm, 0.313" Length
$133.00
Today
VHG400XL Support Documentation
VHG400XLNEW!Graphite V-Groove, Ø300 µm - Ø400 µm, 1.094" Length
$160.00
Lead Time
VHG450 Support Documentation
VHG450Graphite V-Groove, Ø400 µm - Ø450 µm, 0.313" Length
$133.00
Today
VHG500 Support Documentation
VHG500Graphite V-Groove, Ø450 µm - Ø500 µm, 0.313" Length
$133.00
Today
VHG500XL Support Documentation
VHG500XLNEW!Graphite V-Groove, Ø400 µm - Ø500 µm, 1.094" Length
$160.00
Lead Time
VHG550 Support Documentation
VHG550Graphite V-Groove, Ø500 µm - Ø550 µm, 0.313" Length
$133.00
Today

Liquid Cooling System - Optional

Liquid Cooling System Specifications
Cooling Capacity 590 Wa
Coolant Pump Flow Rate 10 Speed Levels up to 4 L/min
Reservoir Capacity 157 mL (5.3 fl-oz)
Radiator Aluminum; 2 x 120 mm Fans
Power Consumption 20 W (Max)
Power Supply 12 VDC (via Molex Connector)
110/120 VAC with Power Adapter 
Weight 8.00 lbs (3.63 kg)
  • At 25 °C Ambient Temperature and 4 L/min Coolant Flow Rate
  • Optional Cooling System for GPX4000LZ Glass Processor in Filament Heating Mode
  • Prevents Furnace Overheating During Extended Heating Operation (e.g., Tapering)
  • Includes 700 mL (24 fl oz) of High-Performance Liquid Coolant

The GPXLZWCS Liquid Cooling System is an optional add-on for our GPX4000LZ Glass Processor that helps keep the furnace tower cooled during extended heating operations when using the filament heating mode. It is highly recommended for customers interested in fiber tapering, mode adapter, or fiber termination applications. If the GPXLZWCS is ordered at the same time as the GPX4000LZ Glass Processor Workstation, it can be installed at the factory prior to shipping.

The GPXLZWCS has a 157 mL reservoir to cycle high-performance liquid coolant (700 mL bottle of coolant included) at flow rates of up to 4 L/min with a cooling capacity of 590 W at 25 °C ambient temperature; click here for an MSDS safety sheet. Tubing and fittings for connecting to the GPX4000LZ are included. The cooling system can be powered either through a 12 VDC Molex Connector (via the included computer slot adapter) or externally using the included 110/120 VAC power adapter.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available / Ships
GPXLZWCS Support Documentation
GPXLZWCSNEW!Liquid Cooling System for Vytran™ CO2 Laser Glass Processor
$1,900.00
Lead Time

Replacement Filament Assemblies - Optional

Item # Filament
Material
Cladding Diameter
(Min/Max)
Applicationa LFS4100
Compatible
FTAV2 Graphite 80 µm / 250 µm Splice Yes
FTAV4 125 µm / 600 µm
FTAV5 250 µm / 1000 µm
FTAV6 400 µm / 1300 µm
FTAT3 250 µm / 1500 µm Taper No
FTAT4 400 µm / 1800 µm
FRAV1 Iridium ≤200 µm Splice Yes
FRAV3 ≤400 µm
FRAV5 250 µm / 1050 µm
  • This column indicates the optimized application for each filament assembly but is not restrictive; splice filaments can also be used for tapering.
  • Replacement Graphite and Iridium Filament Assemblies for CO2 Laser Glass Processor
  • Assembly Includes Filament Element and Protective Shroud
  • Optimized for Splicing or Tapering Applications (See Table to the Right for Details)
  • Splicing Filaments Also Compatible with LFS4100 Splicing System

Filament Assemblies contain a graphite or iridium omega-shaped resistive heater element encased within a protective shroud. The filaments sold here are compatible with the automated glass processors; those indicated in the table to the right as splice filaments are also compatible with the LFS4100 Splicing System and other GPX Series Automated Glass Processors

A selection of six graphite and three iridium filament assemblies for fibers with claddings up to Ø1800 µm are available. Graphite filaments are capable of achieving the high temperatures necessary for splicing or tapering large-diameter fibers while outgassing less than filaments made from other metals. Alternatively, iridium filaments heat fibers at slightly lower temperatures than graphite filaments, making these ideal for working with soft glass fibers. Although the heating lifetime of a filament is approximately 40 minutes, this can vary depending on a number of factors including argon quality, splice/taper duration, and fiber glass quality. 

Filaments are optimized for splicing or tapering applications; this is not restrictive, however, as splice filaments can be used for tapering. Splice filaments have an opening in the top of the assembly body, while tapering filaments are closed off at the top to minimize exposure to contaminants. Different filament bodies are distinguished by the version number (e.g., V2, V6, T3) engraved on the assembly body. 

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available / Ships
FRAV1 Support Documentation
FRAV1Iridium Filament Assembly, ≤Ø200 µm Cladding
$572.00
Today
FRAV3 Support Documentation
FRAV3Iridium Filament Assembly, ≤Ø400 µm Cladding
$572.00
Today
FRAV5 Support Documentation
FRAV5Iridium Filament Assembly, Ø250 µm - Ø1050 µm Cladding
$572.00
Today
FTAT3 Support Documentation
FTAT3Graphite Filament Assembly, Ø250 µm - Ø1500 µm Cladding
$572.00
Today
FTAT4 Support Documentation
FTAT4Graphite Filament Assembly, Ø400 µm - Ø1800 µm Cladding
$572.00
Today
FTAV2 Support Documentation
FTAV2Graphite Filament Assembly, Ø80 µm - Ø250 µm Cladding
$572.00
Today
FTAV4 Support Documentation
FTAV4Graphite Filament Assembly, Ø125 µm - Ø600 µm Cladding
$572.00
Today
FTAV5 Support Documentation
FTAV5Graphite Filament Assembly, Ø250 µm - Ø1000 µm Cladding
$572.00
Today
FTAV6 Support Documentation
FTAV6Graphite Filament Assembly, Ø400 µm - Ø1300 µm Cladding
$572.00
Today

Ultrasonic Cleaner - Optional

USC1 Ultrasonic Cleaner Specifications
Outside Dimensions
(L x W x H)
5.25" x 4.25" x 5.00"
(133.4 mm x 108.0 mm x 127.0 mm)
Tank Capacity 530 mL (18 fl oz.)
Tank Dimensions
(L x W x H)
4.75" x 3.38" x 2.63"
(120.7 mm x 85.9 mm x 66.8 mm)
Peak Output Power 22 W
Peak Output Frequency 55 kHz
Operating Current 0.2 A
Operating Voltage 117 VAC @ 50/60 Hz
Weight 5 lbs (2.27 kg)

Click to Enlarge
USC1 with Two Beakers (Included) for Two-Step Cleaning Process
  • Generates Ultrasonic Waves at 55 kHz with 22 W Power for Cleaning Small Components
  • Two 80 mL Beakers for Holding Samples and Solvents During Cleaning
  • Included Foot Pedal Allows for Hands-Free Operation

The USC1 Ultrasonic Cleaner is a self-contained, compact device that uses ultrasonic waves to clean small components. It produces waves with a peak power of 22 W and a frequency of 55 kHz. The 530 mL tank is filled with a liquid, usually water. A foot pedal that is plugged into the electrical cord offers hands-free operation. 

For cleaning components with solvents, Thorlabs recommends holding the solvent in the beakers within the cleaner as shown in the image above. This method allows the user to clean the sample in a solvent, then follow immediately with a rinsing step in the other beaker. 

Please note that the USC1 includes a power cord for US-style outlets and requires 117 VAC to operate. There is no 230 V equivalent at this time.
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available / Ships
USC1 Support Documentation
USC1Compact Ultrasonic Cleaner with Foot Pedal Switch
$638.00
Today
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