The QSDM-1550-S from QPhotonics is a Superluminescent Diode with Wavelength 1510 to 1560 nm, Output Power 7.5 to 20 mW, Bandwidth (FWHM) 30 to 40 nm(Spectral Width), Forward Voltage 1.5 to 2.2 V, Forward Current 150 to 400 mA. More details for QSDM-1550-S can be seen below.