SFP-BIDI transceivers are high-performance, cost-effective modules that support dual data rates of 1.25 Gbps/1.0625 Gbps and a transmission distance of 20 km using SMF technology. The transceiver consists of three sections: a FP laser transmitter, a PIN photodiode integrated with a transimpedance preamplifier (TIA), and an MCU control unit. All modules meet Class I laser safety requirements.