The SLD1005S from Thorlabs Inc is a Superluminescent Diode with Wavelength 1530 to 1570 nm, Output Power 20 to 22 mW, Bandwidth (FWHM) 45 to 50 nm, Forward Voltage 1.4 to 1.8 V, Operating Current 600 to 800 mA. More details for SLD1005S can be seen below.