The WSLP-1550-xxxm-9-DFB from Wavespectrum Laser Inc. is a Laser Diode with Wavelength 1520 to 1580 nm, Output Power 0.0005 to 0.003 W, Output Power (CW) 0.0005 to 0.003 W, Operating Current 0.002 A, Operating Temperature -10 to 85 Degree C. More details for WSLP-1550-xxxm-9-DFB can be seen below.