The BDTRS813L1SD-20 from Shanghai Baudcom Communication Device is a Fiber Optic Transceiver with Data Rate 10.3125 Gb/s, Wavelength 1290 to 1330 nm, Distance/Reach Up to 20 km, Output Power -5 to 0.5 dBm, Receiver Sensitivity -13 to -12 dBm. More details for BDTRS813L1SD-20 can be seen below.