Thorlabs offers state-of-the-art ytterbium doped optical fibers for optical amplifiers, ASE light sources, and high-power pulsed and CW fiber laser applications. Neodymium doped fibers are available for custom orders. These fibers, manufactured by Liekki Ltd. in Finland, are fabricated using the latest doped fiber production technology – Liekki Direct Nanoparticle Deposition (DND). Applications in the fast growing fiber laser and high-power amplifier segments require short fiber lengths, flat refractive index profiles without core burnout, and large core-to-cladding ratio (large mode area double clad fibers). Liekki DND technology was designed with the requirements of these advanced fiber applications in mind.
Available Ytterbium Doped Fibers
The YB1200 family of highly doped ytterbium fibers is designed for fiber amplifiers, continuous wave (CW) and pulsed fiber lasers from mW to over 100W output power levels, operating in the 1µm wavelength region. These fibers, fabricated using Liekki Direct Nanoparticle Deposition (DND) technology, make it possible to reduce the required fiber lengths and to reduce nonlinear effects.
Liekki YB1200-4/125 is a highly doped ytterbium fiber for low noise, low nonlinearity preamplifiers and lasers. Its telecom like geometry makes the fiber compatible with low cost pump diodes and standard single mode passive fibers.
Liekki YB1200-6/125DC is a highly doped, single mode, double-clad fiber for medium-power fiber laser and amplifier applications. The fiber is compatible with many fiber-based components such as gratings and combiners.
Liekki YB1200-10/125DC is a highly doped, double-clad fiber for medium to high-power fiber laser and amplifier applications. The combination of high cladding absorption and a single mode core make the fiber ideal for compact fiber-based power amplifiers.
Liekki YB1200-20/400DC is a highly doped, double-clad fiber for high-power fiber lasers and amplifiers. The fiber combines a large core with excellent beam quality and a 400 μm cladding that is compatible with industry standard high-power pump lasers and delivery fibers.
Liekki YB1200-25/250DC is a highly doped, double-clad fiber featuring very high cladding absorption, high efficiency per application length, and excellent beam quality. The fiber is ideal for high average power pulsed fiber amplifiers.
Liekki YB2000-7/125DC is a highly doped, double-clad fiber for low-power amplifier or laser applications. The high photodarkening resistance and flat absorption profile enable the use of 940 nm pump lasers.
Liekki YB2000-10/125 DC is a highly doped, photodarkening-resistant fiber suitable for low-power laser or amplifier applications.
Item #
Absorption @ 920 nm
Core Diameter
Cladding Diameter
Coating Diameter
YB1200-4/125
280 ± 50 dB/m
4.0 ± 0.4 μm
125 ± 2 μm
245 ± 15 μm
YB1200-6/125DC
0.6 ± 0.2 dB/m
5.5 ± 0.5 μm
125 ± 2 μm
245 ± 15 μm
YB1200-10/125DC
1.8 ± 0.4 dB/m
10 ± 1 μm
125 ± 2 μm
245 ± 15 μm
YB1200-20/400DC
0.7 ± 0.2 dB/m
20 ± 2 μm
400 ± 15 μm
500 ± 15 μm
YB1200-25/250DC
2.5 ± 0.7 dB/m
25 ± 2.5 μm
250 ± 15 μm
350 ± 15 μm
YB2000-7/125DC
1.0 ± 0.2 dB/m
7 ± 0.5 μm
125 ± 2 μm
245 ± 15 μm
YB2000-10/125DC
2.0 ± 0.4 dB/m
10 ± 1.0 μm
125 ± 2 μm
245 ± 15 μm
Production Notes
Liekki has stopped production of the following fibers due to concerns about photo darkening. However, they plan to reintroduce this fiber in the near future. According to the manufacturer there is a 1:1 relation to the amount of fiber required for the alternative fibers listed in the table below.
Item #
Alternative Item #
YB2000-4/125
YB1200-4/125
YB2000-6/125DC
YB1200-10/125DC
Single Mode Core Pumped Fiber
Item#
YB1200-4/125
MFD
4.4 ± 0.8 μm
Peak Core Abs @ 976 nm (Nominal)
1200 dB/m
Core Abs @ 920 nm
280 ± 50 dB/m
Core NA (Nominal)
0.2
Cladding NA
>0.46
Cutoff Wavelength
1010 ± 70 nm
Cladding Dia.
125 ± 2 μm
Cladding Geometry
Round
Coating Diameter
245 ± 15 μm
Coating Material
High Index Acrylate
Core Diameter
−
Core Concentricity Error
<0.7 μm
Proof Test
>100 kpsi
Double Cladding SM and MM Fibers
Item #
YB1200-6/125DC
YB1200-10/125DC
YB1200-25/250DC
MFD
6.0 ± 0.8 μm
−
−
Peak Cladding Abs @ 976 nm
2.6 dB/m Nom
6.5 dB/m Nom
10.8 dB/m Nom
Cladding Abs @ 920 nm
0.6 ± 0.2 dB/m
1.8 ± 0.4 dB/m
2.5 ± 0.7 dB/m
Core NA
0.15 ± 0.01
0.08 ± 0.01
0.07 ± 0.01
Cladding NA
>0.46
>0.46
>0.46
Cutoff Wavelength
n/a
n/a
n/a
Cladding Diameter*
125 ± 2 μm
125 ± 2 μm
250 ± 15 μm
Cladding Geometry
Octagonal
Octagonal
Octagonal
Coating Dia.
245 ± 15 μm
245 ± 15 μm
350 ± 15 μm
Coating Material
Low Index Acrylate
Low Index Acrylate
Low Index Acrylate
Core Diameter
5.5 ± 0.5 μm
10 ± 1 μm
25 ± 2.5 μm
Core Concentricity Error
<1.0 μm
<1.5 μm
<1.5 μm
Proof Test
>100 kpsi
>100 kpsi
>100 kpsi
*) Flat to flat
Item#
YB1200-20/400DC
YB2000-7/125DC
YB2000-10/125DC
MFD
−
−
−
Peak Cladding Abs @ 976 nm
3.0 dB/m
−
−
Cladding Abs @ 920 nm
0.7 ± 0.2 dB/m
1.0 ± 0.2 dB/m
2.0 ± 0.4 dB/m
Core NA
0.07 ± 0.01
0.19 ± 0.02
0.12 ± 0.02
Cladding NA
>0.46
>0.46
>0.46
Cutoff Wavelength
n/a
n/a
n/a
Cladding Diameter*
400 ± 15 μm
125 ± 2 μm
125 ± 2 μm
Cladding Geometry
Octagonal
Octagonal
Octagonal
Coating Dia.
500 ± 15 μm
245 ± 15 μm
245 ± 15 μm
Coating Material
Low Index Acrylate
Low Index Acrylate
Low Index Acrylate
Core Diameter
20 ± 2 μm
7 ± 0.5 μm
10 ± 1.0 μm
Core Concentricity Error
<1.5 μm
<1.5 μm
<1.5 μm
Proof Test
>50 kpsi
>100 kpsi
>100 kpsi
*) Flat to flat
Custom Patch Cable Service with Same Day Shipment
Thorlabs stocks the largest selection of single mode and multimode optical fibers in the photonics industry. Simply use the form below to receive a quote on a custom patch cable. Once filling out the quote request, a member of our Technical Support team will e-mail you a quote with a lead time.
Custom patch cables can be shipped the same day they are ordered provided the following criteria* are met:
Order Does Not Exceed 5 Cables
Each Cable Does Not Exceed 20 m in Length
Order is Placed Before 12:00 pm Eastern Standard Time
*Other restrictions may apply. Not available with PCF or PM fibers.
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Posted Comments:
Poster: apalmentieri
Posted Date: 2010-01-27 15:12:13.0
A response from Adam at Thorlabs to tswang: I am currently looking over your request, but would like to know the exact fiber you are looking at. If this is more of a general question, some of this information can be found on our website under the specifications tab and the other information will be provided once we know the exact fiber you are considering. I will email you directly to get more information.
Poster: tswang
Posted Date: 2010-01-27 14:04:56.0
Dear OFS,
I am a PhD student at CREOL of UCF woring in Fiber Optics Lab. My current project is on the Solar energy utilizing at this point. At first, an active fiber would be my ideal candidate, for example Nd3+_doped fiber. Please tell me the following parameters on this type of Nd3+-doped fibe:
(1)geometries, such as d_core/d_cladding
(2)optical properties, such as OD/neff_core/neff_cladd/NA/V-number/MFD
(3)doping concentration/level
(4)absorption values(for example, White-light/Sunlight of 400nm~1800nm)
(5)price/meter
Actually, any information are more than welcome with details As much As possible.
Best regards
Tian
==================
Tiansi Wang
Graduate Research Assistant
Fiber Optics Lab
College of Optics and Photonics: CREOL & FPCE
University of Central Florida
Thorlabs offers a range of passive large-mode-area (LMA) fibers matched with available active LMA fibers such as Liekki's Yb1200 product family. These passive fibers are matched to the core diameters and numerical apertures of their active counterparts to maintain excellent beam quality throughout fiber laser or amplifiersystems. The outer cladding diameter is designed to "round" the shaped active fibers, to achieve low pump coupling loss from passive to active fibers. The passive fibers are coated with low-index fluoroacrylate enabling active fibers to be pumped through them. High index acrylate coated fibers are available by special request; please contact your local technical support office for details.
Item#
Core
Cladding
Coating
Core NA
Cladding NA
Proof Test
P-10/125DC
10 ± 1 μm
125 ± 2 μm
245 ± 15 μm
0.08 ± 0.01
>0.46
>100 kpsi
P-20/390DC
20 ± 2 μm
390 ± 8 μm
500 ± 15 μm
0.07 ± 0.01
>0.46
>50 kpsi
P-25/240DC
25 ± 2.5 μm
240 ± 5 μm
350 ± 15 μm
0.07 ± 0.01
>0.46
>50 kpsi
P-40/140DC
40 ± 4 μm
140 ± 3 μm
245 ± 15 μm
0.09 ± 0.01
>0.46
>100 kpsi
Custom Patch Cable Service with Same Day Shipment
Thorlabs stocks the largest selection of single mode and multimode optical fibers in the photonics industry. Simply use the form below to receive a quote on a custom patch cable. Once filling out the quote request, a member of our Technical Support team will e-mail you a quote with a lead time.
Custom patch cables can be shipped the same day they are ordered provided the following criteria* are met:
Order Does Not Exceed 5 Cables
Each Cable Does Not Exceed 20 m in Length
Order is Placed Before 12:00 pm Eastern Standard Time
*Other restrictions may apply. Not available with PCF or PM fibers.
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YB1200-4/125
- Ytterbium Doped Fiber, 976nm, 4 µm Core Diameter
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