Analytical formulation of distortion and chirp in CATV DFB lasers including spatial hole burning

Author

Vinzio, Raffaella ; Toffano, Zeno ; Destrez, Alain

Author_Institution

Service Radio, Ecole Superieure d´´Electr., Gif-sur-Yvette, France

Volume

34

Issue

2

fYear

1998

fDate

2/1/1998 12:00:00 AM

Firstpage

311

Lastpage

317

Abstract

Analytical formulas for distortions permitting the calculation of composite second order (CSO) and composite triple beat (CTB) in distributed feedback (DFB) laser diodes are given, including gain compression and longitudinal spatial hole burning (LSHB). An improved chirp expression including both effects is also proposed. Gain compression is compared to LSHB over the CATV band: LSHB effects on distortion and chirp are found to be dominant in actual CATV lasers. Nonmonotonous behavior (dips) function of frequency and bias current is verified in second- and third-order distortions in agreement with recent results

Keywords

cable television; chirp modulation; distributed feedback lasers; intermodulation distortion; laser beams; laser theory; optical fibre networks; optical hole burning; optical transmitters; semiconductor lasers; CATV DFB lasers; CATV band; analytical formulation; bias current; chirp; composite second order; composite triple beat; distortion; distributed feedback laser diodes; gain compression; nonmonotonous behavior; second-order distortions; spatial hole burning; third-order distortions; Chirp modulation; Distributed feedback devices; Equations; Fiber lasers; Frequency; Intermodulation distortion; Laser feedback; Laser modes; Laser noise; Semiconductor lasers;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/3.658722

Filename

658722