The FTLF8524P3BNL from Coherent Corp. is a Fiber Optic Transceiver with Data Rate 3.7 to 4.25 Gb/s, Wavelength 830 to 860 nm (Tx), 770 to 860 nm (Rx), Output Power -9 dBm, Receiver Sensitivity -12.1 dBm. More details for FTLF8524P3BNL can be seen below.