The EP1654-DM-B from Eblana Photonics is a Laser Diode with Wavelength 1640 nm, 1653.7 nm, 1673 nm, Output Power 3 to 6 mW, Output Power 3 to 6 mW, Threshold Current 20 to 25 mA, Operating Current 120 mA. More details for EP1654-DM-B can be seen below.