TECHGuru

  Fiber Optic Isolator: Introduction Fiber optic isolator is a passive magneto-optic device required in fiber optic communications The main function of a fiber optic isolator market is to pass the light in only one direction and restrict other laser source from unwanted feedback to prevent the damage of laser source The feedback from external laser sources can create problems such as mode hop, amplitude modulate, frequency shift, etc., in such cases, fiber optic isolator is useful to reduce these effects The fiber optic isolator is also called as an optical diode, photo-coupler, or an opto-coupler, which consists of a Faraday rotator, input polarizer, and output polarizer, as it works on the principle of Faraday’s effect used in the Faraday rotator Fiber optic isolator is utilized in output circuits with a high output light level such as laser diode transmitter and Erbium-Doped Fiber Amplifier (EDFA) to ensure higher performance of light transmission by passing the light in one di...