polarization independent optical isolator

In order to solve this problem.įirst, the need to ensure the production and testing of products in good environmental cleanliness and choose a higher damage threshold optics and optical film, of course, this was also the product cost constraints. This problem is not the high- power optical isolator exist, that is, other high-power optical devices design and production process is also to face. Optical element injury problem at a high power density of the laser radiation. Unipolar device having low insertion loss, two-stage device has a high optical isolation, suitable for different applications, mainly used in fiber amplifiers, fiber lasers.Ĭompared with the common optical fiber communication systems use lower power optical isolator at higher laser power, optical isolator design and production also showed some differences, which is in the design and development of high-power devices the main problem to be solved. The domestic part of 1310/1480 / 1550nm polarization independent optical isolator interior design process for single-mode fiber of two orthogonal polarization states are treated to ensure that the entire device is independent of the polarization characteristics. In the long haul coherent optical communication system, installed at some distance an optical isolator can reduce the power loss caused by stimulated Brillouin scattering by.Ī wide variety of optical isolators, optical isolators including online, free-space optical isolator and the like.

Both ends of the optical fiber amplifier doped fiber isolator mounted glazing can improve the stability of the fiber amplifier, without it, after the reflected light will enter the signal source (laser), causing volatility in the signal source. In the high-speed direct modulation, direct detection optical fiber communication systems, backward transmitted light will produce additional noise, the system's performance degradation, which also requires an optical isolator to eliminate. For example, between the semiconductor laser source and the optical transmission system mounting an optical isolator, the reflected light can reduce the adverse effects on the stability of the spectral output of the light source is largely generated. Its role is to prevent adverse effects after the optical path of the light generated due to various reasons the light source and the optical system to produce transmission. Optical isolator characteristics are: forward low insertion loss, high reverse isolation, high return loss. The main advantage of the optical isolator Faraday magneto-optical effect of the crystal. Echo reflected through the optical fiber can be well isolated optical isolator. Optical isolatoris a passive optical components allows only one-way passage of light, its working principle is based on Faraday rotation of non-reciprocity. Opneit Communications Co:optical isolator technology and market analysis

Polarization independent optical isolator