The 100G-BD31-LR from 3Coptics is a Fiber Optic Transceiver with Data Rate 100 Gb/s, Wavelength 1270 to 1610 nm (CWDM), Distance/Reach 20 km, Output Power -4.3 to 4.5 dBm, Receiver Sensitivity -14.5 dBm. More details for 100G-BD31-LR can be seen below.