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

Volume

16

Issue

10

fYear

1998

fDate

10/1/1998 12:00:00 AM

Firstpage

1874

Lastpage

1880

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;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/50.721075

Filename

721075