Measurement of the linewidth enhancement factor in DFB lasers using a high-resolution optical spectrum analyzer

Author

Villafranca, Asier ; Lázaro, José A. ; Salinas, Iñigo ; Garcés, Ignacio

Author_Institution

Opt. & Broad-Band Commun. Group, Huesca, Spain

Volume

17

Issue

11

fYear

2005

Firstpage

2268

Lastpage

2270

Abstract

Linewidth enhancement factor (also know as chirp parameter is calculated for two distributed feedback lasers using the linewidth asymptotic behavior predicted by Schawles-Townes and Henry. A high-resolution optical spectrum analyzer (BOSA) is used to measure power and linewidth. Comparison with widely accepted network analyzer method is performed with very good agreement.

Keywords

chirp modulation; distributed feedback lasers; laser variables measurement; semiconductor lasers; spectral analysers; spectral line breadth; spectroscopy; DFB lasers; chirp parameter; distributed feedback lasers; high-resolution analyzer; linewidth asymptotic behavior; linewidth enhancement factor; network analyzer; optical spectrum analyzer; semiconductor lasers; Chirp; Distributed feedback devices; Laser feedback; Laser theory; Optical feedback; Optical interferometry; Power lasers; Power measurement; Semiconductor lasers; Spectral analysis; Laser measurements; optical spectroscopy; semiconductor lasers;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2005.857231

Filename

1522289