The Faraday Isolator (FI) manufactured by Altechna is a nonreciprocal optical device that channels the lineary polarized lumen in a single course and averts the backward beam. It normally comprises of two polarizers and a Faraday Rotator. This rotator is manufactured out of magneto-optical active matter that is put into the long-lasting magnet system (Nd-Fe-B).
The magneto-optical active material is available in three types; namely, Terbium-doped glass, Terbium-Gallium-Garnet (TGG) crystals and Yttrium-Iron-Garnet (YIG) crystals. This device safeguards laser by attenuating the returned and backscattered light by several orders of magnitude of about 104 to 106. This device can also be used in lieu of devices that are sensitive to optical feedback which causes some unpleasant outcomes.