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A Wide Range Of Fiber Optic Isolator
Jun 07, 2017

A wide range of Fiber Optic Isolator, including on-line Fiber Optic Isolator, free-space Fiber Optic Isolator, etc., we provide a variety of Fiber Optic Isolator, used to meet the needs of different applications. 1310/1480 / 1550nm Polarization Independent Insulator Internal Design The polarization-independent characteristics of the entire device are guaranteed for the two orthogonal polarization states of the single-mode fiber. Single-pole devices with low insertion loss, two-stage devices have a very high optical isolation, suitable for different applications, mainly used in fiber amplifiers, fiber lasers, fiber CATV network and satellite communications.

Fiber Optic Isolator generally distinguish between wavelengths, 800-1300nm more, there are some special wavelengths.

The output of the LD light source is connected to the optical power meter through the fiber jumper, and its output power is read from the optical power meter, that is, the Fiber Optic Isolator input power.

The Fiber Optic Isolator mainly utilizes the Faraday effect of magneto-optic crystals. Faraday effect is Faraday in 1845 first observed that the material does not have optical rotation under the action of the magnetic field through the material in the direction of polarization of light rotation, also known as magnetic rotation effect. The polarized light transmitted in the direction of the magnetic field is proportional to the product of the polarization direction rotation angle θ and the magnetic field intensity B and the material length L.

For the forward incident signal light, through the polarizer to become linearly polarized light, Faraday spin-magnetic media and external magnetic field together with the polarization direction of the signal light is rotated 45 degrees, and just make low loss through with the polarizer into 45 Place the analyzer. For the reverse light, the linearly polarized light of the analyzer is rotated by 45 degrees when the medium is rotated, so that the direction of polarization of the reverse light is orthogonal to the direction of the polarizer, completely blocking the transmission of the reflected light The

Faraday magnetic media in the range of 1μm ~ 2μm wavelength is usually used low optical loss of yttrium iron garnet (YIG) single crystal. The new pigtail input and output of the Fiber Optic Isolator has a very good performance, the minimum insertion loss of about 0.5dB, isolation of 35 ~ 60dB, up to 70dB.