Features

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These FC/PC single mode connectors feature a pre-radiused (20 mm) ceramic ferrule that minimizes back reflections (-40 to -45 dB). These connectors, which have a 2.0 mm narrow key, come complete with a strain relief boot for either Ø3 mm or Ø900 µm tubing (both in the case of 301255D1). They also feature a hole size tolerance of +1 µm / -0 µm and a maximum concentricity of 1 µm. Each connector package includes a fiber connector cap and plastic boot.

The 301255D1 FC/PC style connector is designed for Polarization-Maintaining (PM) Fiber. The connector's key is continuously adjustable, allowing precise alignment with the axis of the PM fiber. Once the key is aligned, it can be locked into place by adding a drop of superglue in the slot near the back of the connector. These connectors also have a standard 2.0 mm narrow key.

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Tip of an APC-Polished Ferrule

These FC/APC connectors have an 8° pre-angled ceramic ferrule, which when properly polished, results in a typical return loss of 60 dB. However, significant insertion loss can result when mating to different styles. Consequently, we recommend that FC/APC connectors be mated with other FC/APC connectors. If your application requires that you switch connector types, we recommend using a hybrid patch cable. Our FC/APC connectors, which have a 2.0 mm narrow key, have a low 0.25 dB connector-to-connector typical loss. Each connector package includes a fiber connector cap and plastic boot.

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This ST^® style single mode connector features a ceramic ferrule with a pre-radiused tip (R20 mm) to minimize back reflections. Packaged with a strain relief boot for Ø3 mm tubing, the ST connectors feature a maximum concentricity of 1 µm and a hole size tolerance of +1 µm/-0 µm. Each connector package includes a fiber connector cap and plastic boot.

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The LC^®/PC connector was developed to meet the need for smaller and easier-to-use fiber optic connectors. The LC/PC connector reduces space required on panels by 50%. It has a Ø1.25 mm ceramic ferrule and a typical insertion loss of 0.10 dB. Thorlabs offers loose ceramic LC/PC ferrules as well as splice-ready LC/PC connectors. LC is a registered trademark of Lucent Technology.

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The BFTU secures the connector using a 2-56 setscrew and the fiber using a spring-loaded, button-actuated clamp.

• Temporary Fiber Termination
• Mechanically Holds the Fiber and Connector in Place without Epoxy
• Reusable Design
• Compatible with the Thorlabs Fiber Connectors Listed Below

For applications where a temporary fiber termination is desired, our BFTU Bare Fiber Terminator is the solution. The bare fiber terminator is designed to hold fibers in standard connectors (sold separately). The back of the connector is held in place using a 2-56 setscrew, while the fiber is secured with a spring-loaded, button-actuated clamp (see photo to the right).

The BFTU accepts ferrules up to Ø0.158" (Ø4 mm) and fibers up to Ø0.03" (Ø0.7 mm). It is reusable and can be easily cleaned out if the fiber breaks inside the connector by using WC100 clean out wires (sold separately below).

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Thorlabs offers two types of dust caps for protecting the fiber connector end face. The CAPF is for use with fiber connector ferrules 2.5 mm in diameter while the CAPN is for use with SMA type connectors. Dirt on the fiber tip can result in permanent damage to the fiber connector, which can result in increased coupling losses or undesirable mode structure in the output light. To prevent damaging the connectorized fiber, clean it before each use and use a fiber connector cap to protect the endface of the connectorized fiber when it is not in use.