The APXB23B30xDL20 from ATOP Corporation is a Fiber Optic Transceiver with Data Rate 10.5 Gb/s, Wavelength 1270 to 1330 nm, Distance/Reach 20 km, Output Power -3 to 4 dbm, Receiver Sensitivity -12 dBm. More details for APXB23B30xDL20 can be seen below.