... with SMF. The transceiver consists of three sections:a DFB laser transmitter,a PIN photodiode integrated with a trans-impedance preamplifier ... (TIA) and MCU control unit. All modules satisfy class I laser safety requirements. The transceivers are compatible with SFP Multi-Source ... .100% Compatible with Cisco,HP,Finisar,3com, etc. 1.25G , Fiber Optical Transceiver ,CWDM-GBIC-1550nm ,GBIC transceiver,