Traditional WDM optical networks usually use the single-fiber directional transmission. That is, one receive fiber and one transmit fiber are used for multi-wavelength optical signals. The products provide the single-fiber bidirectional transmission solution. That is, the filter function of an board enables sharing of one fiber for receiving and transmitting multi-wavelength optical signals. In this way, fiber resources are effectively utilized. The following details the application scenarios:
1. On the WDM side, the SBM2 board extracts two wavelengths of optical signals from the multiplexed signals and multiplexes another two wavelengths of optical signals into the multiplexed signals, thereby achieving the add/drop and transmission of four wavelengths. This scenario applies only to the CWDM system.
2. On the client side, a client-side single-fiber bidirectional eSFP/XFP optical module simultaneously transmits one wavelength of optical signals and receives another wavelength of optical signals, achieving transmission of signals in both directions over one fiber.
