A backward reflector is designed to reflect back light input through the connector from the fiber. They can be used to produce a fiber interferometer or to build a low power fiber laser. These retroreflectors are ideal for accurate measurements of retroreflector specifications for transmitters, amplifiers, and other devices.
Optical fiber retroreflectors are available in single-mode (SM), polarizing (PM), or multimode (MM) fiber versions. A silver film with a protective layer at one end of the fiber core provides an average reflectivity of ≥97.5% from 450 nm up to the upper wavelength of the fiber. The end is enclosed in a Ø9.8mm (0.39 in) stainless steel housing with the component number engraved on it. The other end of the casing is connected with a 2.0 mm narrow connector of FC/PC(SM, PM, or mm fiber) or FC/APC(SM or PM). For PM fiber, the narrow key aligns with its slow axis.
Each jumper contains a protective cap to prevent dust or other contaminants from sticking to the end of the plug. Additional CAPF plastic fiber caps and FC/PC and FC/APCCAPFM metal thread fiber caps need to be purchased separately.
Jumpers can be coupled by matching bushings, which minimize backward reflection and ensure effective alignment between the connected ends of the fiber
