Application scope of optical switch

 Optical switch is a device with one or more selectable transmission windows that can perform mutual conversion or logical operations on optical signals in optical transmission lines or integrated optical circuits. The basic form of the optical switch is 2X2, that is, there are two optical fibers at the input end and the output end, which can complete two connection states, parallel connection and cross connection, as shown in the figure below. Larger air separation optical switching units can be composed of basic 2X2 optical switches and corresponding 1X2 optical switches cascaded and combined.

Optical switches play a very important role in optical networks. In WavelengthDivisionMultiplexing, WDM transmission systems, optical switches can be used for wavelength adaptation, regeneration and clock extraction. In OpticalTimeDivisionMultiplex, OTDM systems, optical switches can be used for demultiplexing; in In the all-optical switching system, the optical switch is a key component of Optical Cross-connect and OXC, and is also an important component of wavelength conversion. According to the number of input and output ports of the optical switch, it can be divided into 1×1, 1×2, 1×N, 2×2, 2×N, M×N, etc. They have different uses in different occasions. Its application scope mainly includes: protection switching system of optical network, light source control in optical fiber testing, real-time monitoring system of network performance, testing of optical devices, construction of switching core of OXC equipment, optical add/drop multiplexing, optical testing, optical Sensing systems, etc.

xionghua photolelectric provides： Mini mechanical optical switches, 1XN MXN mechanical optical switch modules, magneto-optical switches, polarization-maintaining optical switches, and MEMS optical switches.