Title :
Parallel pump-shared linear cavity laser array using 980-nm pump reflectors or N pieces of gain fibers as self-equalizers
Author :
Liaw, Shien-Kuei ; Tseng, Horn-Yi ; Chi, Sien
Author_Institution :
Inst. of Electro-Opt. Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan
Abstract :
By using fiber gratings as pump reflectors with various reflectivities or N pieces of gain fibers with various lengths externally to linear cavity as self-equalizers, a parallel-type, pump-shared linear cavity laser array (LCLA) is proposed and numerically studied. The average output power is increased and the maximum power variation among channels is reduced from 7.2 to less than 0.1 dB when the reflectivity of each pump reflector or the length of each gain fiber is adjusted appropriately.
Keywords :
Bragg gratings; equalisers; fibre lasers; laser arrays; laser cavity resonators; laser mirrors; optical pumping; optical transmitters; reflectivity; wavelength division multiplexing; 980 nm; WDM sources; average output power; fiber Bragg gratings; fiber gratings; gain fibers; master oscillator power amplifier; maximum power variation; numerical study; parallel pump-shared linear cavity laser array; power equalization; pump reflectors; reflectivity; self-equalizers; Bragg gratings; Distributed feedback devices; Erbium-doped fiber lasers; Fiber gratings; Laser excitation; Optical arrays; Power lasers; Pump lasers; Reflectivity; Semiconductor laser arrays;
Journal_Title :
Photonics Technology Letters, IEEE
