The DL-US55016D-FS from DenseLight Semiconductors is a Superluminescent Diode with Wavelength 1520 to 1580 nm, Output Power 0.12 mW, Bandwidth (FWHM) 50 nm, Forward Voltage 2 V, Forward Current 200 mA. More details for DL-US55016D-FS can be seen below.