The EOLC-1640G-10-1 from Eoptolink Technology, Inc is a Fiber Optic Transceiver with Data Rate 41.5 Gb/s, Wavelength 1270 to 1330 nm, Distance/Reach 10 km, Output Power -137 to 8.3 dBm, Receiver Sensitivity -9.6 to -11.5 dBm. More details for EOLC-1640G-10-1 can be seen below.