Designed for use in optical spectrum analyzers (OSAs) and optical time domain reflectometers (OTDRs) for optical testing applications, SCW 1632-350R operates at 1,625 nm and features optical power of 350 mW typ. Ridge waveguide (RWG) Fabry-Perot (FP) laser diode, housed in 14-pin butterfly package, is optically coupled to single-mode fiber (SMF) pigtail and includes thermoelectric cooler (TEC) and electrically isolated, temperature-sensing thermistor.