Terminated Fiber Adapters

OVERVIEW

Threaded Adapters
Thorlabs offers various types of threaded and unthreaded fiber adapters, which allow the most common types of connectorized fibers to be integrated with SM-threaded, C-Mount-threaded, or unthreaded components. The SM Series of Fiber Adapters allow FC/PC-, FC/APC-, SMA-, or ST-connectorized fibers to be integrated with components that feature either our SM05 (0.535"-40) or SM1 (1.035"-40) thread standard. The C-Mount-threaded fiber adapters provide a means for mating FC/PC-, FC/APC-, or SMA-connectorized fibers with components featuring internal C-Mount (1.000"-32) threading.

These adapters are commonly used when building single mode or multimode fiber couplers and collimators. They can also be utilized to provide light-tight coupling to our DET and PDA detectors. Other connector types are available upon request.

Please note that the adapters designed for use with FC/APC connectors have a mechanical angle of only 4°, even though the standard angle for these connectors is 8°. There is a 4° angle of deflection caused by the glass-air interface; when combined with the 4° mechanical angle, the output beam is aligned perpendicular to the adapter face.

Post-Mounting Adapter
The FCM is a post-mounting adapter for FC- or ST-connectorized fibers, or any other fiber connectorized with a Ø2.5 mm outer diameter ferrule. This flexure clamp includes an 8-32 (M4) tapped hole for post mounting, plus a 5/46" (2 mm) hex for clamping.

Hide Externally SM1-Threaded Fiber Adapters

Externally SM1-Threaded Fiber Adapters

SM1-Threaded Disks with FC/PC, FC/APC, SMA, or ST Receptacle
SM1FC, SM1SMA, and SM1ST are Light Tight When Used with SM1 Lens Tubes
Compatible with Many of Our 30 mm Cage Plates
Compatible with our DET and PDA Series Detectors

Each disk has two dimples in the front surface so it can be tightened with either the SPW909 or SPW801 spanner wrench. The dimples on the SM1FC, SM1SMA, and SM1ST do not go all the way through the disk so that the adapters can be used in light tight applications when paired with SM1 lens tubes.

Item #	SM1FC	SM1FCA	SM1SMA	SM1ST
Adapter Image (Click the Image to Enlarge)
Connector Type	FC/PC	FC/APC	SMA	ST
Threading	External SM1 (1.035"-40)

Part Number	Description	Price	Availability
SM1FC	FC/PC Fiber Adapter Plate with External SM1 (1.035"-40) Thread	$27.00	Today
SM1FCA	FC/APC Fiber Adapter Plate with External SM1 (1.035"-40) Thread	$30.00	Today
SM1SMA	SMA Fiber Adapter Plate with External SM1 (1.035"-40) Thread	$27.00	Today
SM1ST	ST Fiber Adapter Plate with External SM1 (1.035"-40) Thread	$27.00	Today

Hide Internally SM1-Threaded Fiber Adapters

Internally SM1-Threaded Fiber Adapters

SM1-Threaded Disks with FC/PC, FC/APC, SMA, ST, or LC Receptacle
Internal SM1 (1.035"-40) Threading
Light-Tight Construction when used with SM1 Lens Tubes

Item #	S120-FC	S120-SMA	S120-ST	S120-SC	S120-LC
Adapter Image (Click the Image to Enlarge)
Connector Type	FC/PC	SMA	ST	SC	LC
Threading	Internal SM1 (1.035"-40)

Part Number	Description	Price	Availability
S120-FC	FC/PC Fiber Adapter Cap with Internal SM1 (1.035"-40) Thread	$38.00	Today
S120-SMA	SMA Fiber Adapter Cap with Internal SM1 (1.035"-40) Thread	$38.00	Today
S120-ST	ST Fiber Adapter Cap with Internal SM1 (1.035"-40) Thread	$38.00	Today
S120-SC	SC Fiber Adapter Cap with Internal SM1 (1.035"-40) Thread	$48.00	Today
S120-LC	LC Fiber Adapter Cap with Internal SM1 (1.035"-40) Thread	$48.00	Today

Hide Externally SM05-Threaded Fiber Adapters

Externally SM05-Threaded Fiber Adapters

SM05-Threaded Disks with FC/PC, FC/APC, SMA, or ST Receptacle
Light-Tight Construction when used with SM05 Lens Tubes
Compatible with Many of Our 16 mm Mini-Series Cage Plates

Note: The ST and SMA adapters have indents/dimples in the front surface to allow the adapter to be tightened with the SPW801 spanner wrench. Note that these indents do not go all the way through the disk. The FC receptacle is too large to include the tightening indents. Instead we recommend putting an FC connector into the receptacle of the adapter to aid in tightening.

Item #	SM05FC	SM05FCA	SM05SMA	SM05ST
Adapter Image (Click the Image to Enlarge)
Connector Type	FC/PC	FC/APC	SMA	ST
Threading	External SM05 (0.535"-40)

Part Number	Description	Price	Availability
SM05FC	FC/PC Fiber Adapter Plate with External SM05 (0.535"-40) Thread	$26.00	Today
SM05FCA	FC/APC Fiber Adapter Plate with External SM05 (0.535"-40) Thread	$32.00	Today
SM05SMA	SMA Fiber Adapter Plate with External SM05 (0.535"-40) Thread	$26.00	Today
SM05ST	ST Fiber Adapter Plate with External SM05 (0.535"-40) Thread	$26.00	Today

Hide Internally SM05-Threaded Fiber Adapters

Internally SM05-Threaded Fiber Adapters

SM05-Threaded Disks with FC/PC, FC/APC, SMA, ST, or LC Receptacle
Internal SM05 (0.535"-40) Threading
Light-Tight Construction when used with SM05 Lens Tubes

Part Number	PM20-FC	PM20-SMA	PM20-ST	PM20-SC	PM20-LC
Adapter Image (Click the Image to Enlarge)
Connector Type	FC/PC	SMA	ST	SC	LC
Threading	Internal SM05 (0.535"-40)

Part Number	Description	Price	Availability
PM20-FC	FC/PC Fiber Adapter Cap with Internal SM05 (0.535"-40) Thread	$31.00	Today
PM20-SMA	SMA Fiber Adapter Cap with Internal SM05 (0.535"-40) Thread	$31.00	Today
PM20-ST	ST Fiber Adapter Cap with Internal SM05 (0.535"-40) Thread	$43.00	Today
PM20-SC	SC Fiber Adapter Cap with Internal SM05 (0.535"-40) Thread	$43.00	Today
PM20-LC	Customer Inspired!LC Fiber Adapter Cap with Internal SM05 (0.535"-40) Thread	$43.00	Today

Hide Externally C-Mount-Threaded Fiber Adapters

Externally C-Mount-Threaded Fiber Adapters

Item #	CMTFC	CMTFCA	CMTSMA
Adapter Image (Click the Image to Enlarge)
Connector Type	FC/PC	FC/APC	SMA
Threading	External C-Mount (1.000"-32)

C-Mount (1.00"-32) Threaded Disks with FC/PC, FC/APC, or SMA Receptacle
Light-Tight Construction
Compatible with Our SPW909 and SPW801 Spanner Wrenches

Part Number	Description	Price	Availability
CMTFC	FC/PC Fiber Adapter Plate with C-Mount (1.00"-32) Thread	$26.00	Today
CMTFCA	FC/APC Fiber Adapter Plate with C-Mount (1.00"-32) Thread	$42.00	Today
CMTSMA	SMA Fiber Adapter Plate with C-Mount (1.00"-32) Thread	$26.00	Today

Hide Unthreaded Fiber Adapters

Unthreaded Fiber Adapters

Item #	S05FCA	S1FCA
Adapter Image (Click the Image to Enlarge)
Connector Type	FC/APC	FC/APC
Outer Diameter	Ø1/2"	Ø1"
Thickness	2 mm	1.5 mm

FC/APC Receptacles
Unthreaded Ø1/2" or Ø1" Disks
Angled Receptacle

Thorlabs provides two unthreaded FC/APC fiber adapters to be coupled with optomechanics with either 1/2" or 1" diameters. The one inch version also has two small dimples to be used with our SPW909 fixed spanner wrench or SPW801 adjustable spanner wrench. The FC/APC receptacle on both adapters is angled so that the light emitted from an FC/APC connectorized fiber will have a propagation direction that is perpendicular to the face of the disk, which facilitates the alignment of collimation optics or detectors.

Part Number	Description	Price	Availability
S05FCA	Ø1/2" FC/APC Fiber Adapter Plate Without Thread	$32.00	Today
S1FCA	Ø1" FC/APC Fiber Adapter Plate Without Thread	$32.00	Today

Hide Ø2.5 mm Ferrule Clamp

Ø2.5 mm Ferrule Clamp

Click to Enlarge
FCM Clamp with Ferrule-Connectorized Cable

Click to Enlarge
FCM Clamp with FC/PC Connector

Compact Flexure Clamp for Ø2.5 mm Ferrules
Compatible with FC/PC, FC/APC, ST, and Bare Ferrule Connectors with a Ø2.5 mm Outer Diameter
8-32 (M4) Tapped Mounting Hole
Compatible with Ø1/2" Optical Posts

The FCM clamp allows any connectorized fiber with a Ø2.5 mm ferrule to be mounted securely and compactly within an experimental setup. The fiber ferrule is clamped into the flexure mount using a 5/16" (2 mm) hex key. An 8-32 (M4) tapped hole on the bottom of the mount provides compatibility with our Ø1/2" optical posts.

Part Number	Description	Price	Availability
FCM	Fiber Clamp for Ø2.5 mm Ferrules, 8-32 Mounting Hole	$18.00	Today
FCM/M	Fiber Clamp for Ø2.5 mm Ferrules, M4 Mounting Hole	$18.00	Today