The OCI-490-20 ID1550-XE-T from EPIGAP OSA Photonics GmbH is a LED with Forward Voltage 1 to 1.5 V, Forward Current 1000 to 1200 mA (Pulsed), Reverse Current 10 µA, Wavelength 1500 to 1600 nm (Peak), Power 20 to 36 mW. More details for OCI-490-20 ID1550-XE-T can be seen below.