The DFB-CWDM-PM is a Polarization Maintaining CWDM Coaxial DFB-LD Module for CWDM analog communication, CATV return-path, laboratory instrument, and R&D applications. this cost-effective, high stability DFB laser chip has a selectable wavelength with range between 1290 nm to 1610 nm. The versatile DFB-CWDM-PM also features a built-in InGaAsP monitor photodiode, built-in optical isolator and 4-pin coaxial- pigtailed package, single mode coupling, and an FC/APC connector. Contact Optilab for more information.