Title :
Static frequency chirping in λ/4-phase-shifted distributed-feedback semiconductor lasers: influence of carrier-density nonuniformity due to spatial hole burning
Author_Institution :
Dept. of Electron. Eng., Tokyo Univ., Japan
fDate :
1/1/1990 12:00:00 AM
Abstract :
An experimental and theoretical study of the effect of carrier-density nonuniformity on frequency modulation (FM) characteristics of 1.3-μm λ/4-phase-shifted distributed-feedback (DFB) lasers is discussed. The static frequency chirping is measured using a recently developed method that is free from dynamical chirping as well as thermal frequency shift. The amount of chirping shows a strong dependence on the bias current level. This is explained theoretically by considering the nonuniform carrier-density distribution due to the spatial hole burning effect
Keywords :
carrier density; distributed feedback lasers; frequency modulation; optical hole burning; optical modulation; semiconductor junction lasers; λ/4-phase-shifted distributed-feedback semiconductor lasers; 1.3 micron; bias current level; carrier-density nonuniformity; dynamical chirping; frequency modulation; nonuniform carrier-density distribution; spatial hole burning; static frequency chirping; thermal frequency shift; Charge carrier density; Chirp; Current measurement; Degradation; Frequency measurement; Frequency modulation; Laser theory; Nonuniform electric fields; Semiconductor lasers; Stability;
Journal_Title :
Quantum Electronics, IEEE Journal of
