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Fixed Fiber Optic Attenuators, Single Mode
Fiber Attenuator / Terminator Kit, FC/APC Connectors (Not to Scale)
1240 - 1620 nm
1240 - 1620 nm
980 - 1550 nm
Thorlabs' Single Mode Fixed Fiber Optic Attenuators allow one to attenuate an optical signal easily by plugging an FC/PC- or FC/APC-terminated fiber directly into the back end of the attenuator connector. The input of the attenuator has a 2.2 mm wide key female connector, making it compatible with both narrow key and wide key male connectors. The output of the attenuator has a 2.0 mm narrow key male connector (either FC/PC or FC/APC). These single mode attenuators are made with polarization-insensitive doped fiber to achieve the specified attenuation over operating wavelength ranges between 980 - 1620 nm for FC/PC versions and 1240 - 1620 nm for FC/APC versions.
The FA901 attenuator is ideal for use as a sacrificial interface. Its design does not introduce additional attenuation outside of insertion loss caused by intrinsic misalignment between fiber end faces. It can serve as a connector saver that protects end faces of instruments from damage caused by repeated connections with fiber patch cables.
Every attenuator includes connector caps. For replacements, plastic FC connector and mating sleeve caps are available.
The FA901 will be retired without replacement when stock is depleted. If you require this part for line production, please contact our OEM Team.
Thorlabs' Fiber Optic Attenuator and Terminator Kits each contain six fixed attenuators, five terminators, and a selection of dust caps. Components in the FAK03 kit have FC/PC connectors while those in the FAK05 kit have FC/APC connectors. Each kit is packaged in a plastic box measuring 7.0" x 3.5" x 1.25" (177.8 mm x 88.9 mm x 31.8 mm) and has nine labeled compartments. The label on the lid indicates the contents, associated Thorlabs item number (where applicable), attenuation value and tolerance for the attenuators, and wavelength range and return loss for the terminators. The table to the right lists the description and quantity of each item included in these kits.