Thorlabs - Terminated Fiber Adapters

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.

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Posted Comments:

Poster: tor

Posted Date: 2010-11-12 14:55:33.0

A response from Tor at Thorlabs to johannes.trapp: Thank you for your interest in the SM05FC. The distance from the fiber tip to the adapters front surface is 0.84mm.

Poster: johannes.trapp

Posted Date: 2010-11-12 11:00:38.0

whats the distance between the end facet of the inserted fiber and the surface of the adapter, i.e. how close can I get the fiber end (in the adapter) to an object if the adapter is placed directly onto that object? thanks

Poster: lincoln.turner

Posted Date: 2010-09-28 19:50:30.0

A great addition to your product line would be a version of the SM1FCA (and S05FCA) fiber adapters that are designed for PM fiber. Currently the key width on these plates is 2.3-2.4mm which does not match either the industry standard 2.1mm wide key or 2.0mm narrow key. Currently when you use your PM fiber patch leads (they have a narrow key) it is impossible to remove and reconnect the patch lead while maintaining a stable polarisation as the key can rotate by 1-2 degrees in the SM1FCA plate!

Poster: Greg

Posted Date: 2010-09-28 13:26:55.0

A response from Greg at Thorlabs to lincoln.turner: Our SM1FCA is designed for a key width of 0.085" +0.0003/-0.0 (2.16 mm +0.008/-0.0), allowing it to accept either narrow or wide key widths. We will look into adding a narrow key version of these adapters to increase repeatability for customers like yourself. For the time being, we can offer wide key FC/APC connectors on custom patch cables, which will provide a more repeatable fit with our SM1FCA and SM05FCA.

Poster: Laurie

Posted Date: 2009-04-13 08:14:34.0

Response from Laurie at Thorlabs to tony: We currently do not offer an externally threaded connector adapter similar to what you have requested, although one option may be to use the S120-SC or the S120-LC with the SM1T2 Coupler, which will offer the external threads that you require. If this will not work for you, please let our technical support staff know, as we may be able to create a custom item for you with the required external threads.

Poster: tony

Posted Date: 2009-04-08 11:33:34.0

Can you supply these externally threaded products with SC or LC connectors? I see that you are offering this with the new internally threaded adapters

Poster: TechnicalMarketing

Posted Date: 2008-02-07 15:58:23.0

Thank you for pointing out that the product description was unclear on this point. We have updated the description.

Poster: acable

Posted Date: 2007-12-15 12:59:50.0

It is not clear if the holes for the spanner wrench go through the body of these adapters, while you say "light tight coupling" the drawings are not clear on this point.

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