Design

Using a micro aspheric glass lens, light exiting the fiber is properly collimated through a Bismuth Iron Garnet (BIG) Faraday rotating element that is accurately positioned in the field of a permanent magnet. The beam, reflected at normal incidence by a dielectric coated mirror, retraces its original path and re-enters the fiber.
OFR's Faraday Rotator Mirrors are available off-the-shelf pigtailed with standard single mode fiber, Corning SMF 28 or equivalent. The fiber is mounted in a standard 900 mm tight tube buffer with proper stain relief.

Low-loss Models, unique to OFR,
are selected for Insertion Loss less than 0.5dB. Standard loss models are available at less than 0.8 dB. Also unique to OFR's FRMs is high power capability....2-3W.

No other FRMs on the market can claim to match OFR's specifications.