The 2.5G 1625nm DFB pigtail diode laser 1mw includes a CWDM-DFB laser chip,built-in isolator,built-in monitor photodiode,4-pin coaxial package, and optional SC,FC,ST,or LC optical fiber connector.It delivers a low threshold and operating current at a output power range between 1MW and 2MW. The length of optical fibers can be supplied according to the customer requirements.Various pin definitions are also available.This series of product can be used as the stabilized light source or modulated light source.It also finds applications in testing apparatus and OTDR equipment.