Single-fiber bidirectional transmission mechanism
The WDM system supports two transmission modes: single-fiber unidirectional and single-fiber bidirectional. From this document, I understand that single fiber bidirectional mode uses different wavelengths for send and receive modes, and filters on each end of the circuit to pass only the desired wavelengths. I am not sure if the aforementioned devices use this method, or if they use some form of. BiDi modules can provide a reduction in fiber usage by over fifty percent, which is a.
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