Optical isolator is a two-port optical device with non-reciprocal characteristics. It has little attenuation to the optical signal transmitted along the forward direction and great attenuation to the optical signal transmitted along the opposite direction, forming a one-way path of light. In the laser and transmission fiber, the optical isolator can effectively suppress the reflected light generated from the optical fiber distal end face and optical fiber connector interface to return to the laser, so as to ensure the stability of the laser working state and reduce the system noise caused by reflected light. This is especially important for high rate coherent optical fiber communication systems.
Types of Optical Isolator
There are various types of optical isolators, such as in-line optical isolator, free space optical isolator, etc. GLsun manufactures optical isolators of various specifications to meet different demands of application areas. Unipolar device has low insertion loss, and the bipolar device has high optical isolation, which is sui for different applications, mainly used in fiber amplifier, fiber laser, fiber CATV network and satellite communication. Optical isolators are generally differentiated by wavelength, usually 800-1300nm, there are also some special wavelengths. Read more on Working Principles of Optical Isolators.
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