Internally, the module contains two separate transmitter/receiver pairs with integrated WDM filters. Each pair operates at 1490 nm and 1310 nm on its own fibre, allowing two full-duplex data channels to run through a single compact module. Enables full-duplex communication over dual fibers or bidirectional (BIDI) transmission over a single fiber using different wavelengths. Allows modules to be inserted or. The Cisco QSFP 100-Gb SR1. 2 Bi-Directional (BiDi) transceiver is a pluggable optical transceiver with a duplex LC connector interface for short-reach data communication and interconnect applications using Multi-Mode Fiber (MMF). Built as a dual-channel RS232 transceiver, this little module bridges the gap between TTL devices (like Arduinos or ESP32s) and RS232 gear (think old printers, industrial sensors, or PCs with DB9 ports). The dual Far Reach 8-channel (2xFR4) design uses 100G-PAM4 electrical and optical modulation based on the CWDM4 serial, multiplexed 1310nm wavelength grid.
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