Traditional applications of optical switching:
An essential function of optical switches in communication networks is to automatically recover from fiber breaks or transponder failures. Most modern optical fiber networks have more than two optical fiber routes connected to key nodes. Through the optical switch, the optical signal can easily avoid the failed optical fiber or transponder, and re-select the effective route to the destination. But the rate at which signals are rerouted is very important to avoid information loss, and the switching rate is especially important in high-speed telecommunications systems.
Another traditional application of optical switches is network monitoring. At the remote fiber test point, a 1×N switch can be used to connect multiple fibers to an Optical Time Domain Reflectometer (OTDR) to monitor the fiber link. Faults on each fiber link can be accurately located using switches and OTDRs. In the actual transmission network, the switch also allows the user to take out the signal or plug in a network analyzer for real-time monitoring without disturbing the network data transmission.
Optical switches are also commonly used for field testing of fiber optic devices. For example, a multi-channel switch is a powerful tool for in-circuit testing of fiber optic devices. Multiple components can be tested without interruption by monitoring each switch channel for a specific test parameter.
Optical switches have also begun to be used in fiber optic sensor networks.
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Traditional applications of optical switching-Aixton brand
February 4, 2023
