Title :
Precise measurement of semiconductor laser chirp using effect of propagation in dispersive fiber and application to simulation of transmission through fiber gratings
Author :
Peral, Eva ; Marshall, William K. ; Yariv, Amnon
Author_Institution :
Dept. of Appl. Phys., California Inst. of Technol., Pasadena, CA, USA
fDate :
10/1/1998 12:00:00 AM
Abstract :
Measurements of small-signal intensity modulation from direct-modulated distributed feedback (DFB) semiconductor lasers after propagation in dispersive fiber have previously been used to extract intrinsic laser chirp parameters such as linewidth enhancement factor and crossover frequency. Here, we demonstrate that the simple rate equations do not satisfactorily account for the frequency response of real DFB lasers and describe some experimental techniques that conveniently determiner the precise laser chirp. Implications for simulation of high-speed lightwave systems are also considered
Keywords :
chirp modulation; diffraction gratings; distributed feedback lasers; electro-optical modulation; frequency response; laser variables measurement; measurement errors; optical fibre communication; semiconductor lasers; crossover frequency; direct-modulated DFB semiconductor lasers; dispersive fiber propagation; extract intrinsic laser chirp parameters; frequency response; high-speed lightwave systems; linewidth enhancement factor; precise laser chirp; precise measurement; real DFB laser; semiconductor laser chirp; simple rate equations; Chirp; Dispersion; Distributed feedback devices; Equations; Fiber lasers; Frequency measurement; Intensity modulation; Laser feedback; Optical propagation; Semiconductor lasers;
Journal_Title :
Lightwave Technology, Journal of
