The CSS-891A09 from Huber+Suhner is a Fiber Optic Transceiver with Data Rate 1.0625 to 11.3 Gb/s, Wavelength 1260 to 1620 nm, Distance/Reach up to 10 km, Output Power -6 to -0.5 dBm, Receiver Sensitivity <-15 dBm. More details for CSS-891A09 can be seen below.