High power 1550 nm distributed feedback lasers with 440 mW CW output power for telecommunication applications

Summary form only given. High power 1550 nm InGaAsP/InP single-frequency distributed-feedback lasers with record output powers are reported. Ex-facet power levels of 440 mW and single-mode fiber power of 340 mW have been achieved for CW operation at 20/spl deg/C.