Parameter extraction from DFB lasers by means of a simple expression for the spontaneous emission spectrum

Author

Schatz, Richard ; Berglind, Eilert ; Gillner, Lars

Author_Institution

Lab. of Photonics and Microwave Eng., R. Inst. of Technol., Kista, Sweden

Volume

6

Issue

10

fYear

1994

Firstpage

1182

Lastpage

1184

Abstract

A simple expression for the amplified spontaneous emission from a laser biased below lasing threshold is applied to semiconductor laser parameter extraction. We demonstrate that accurate measurement of the coupling coefficient for distributed feedback (DFB) lasers with phaseshifts and end reflections is a practical possibility. It is also shown that the used expression, for a reciprocal device, can be derived directly from the wave equation using the Green´s function.<>

Keywords

Green´s function methods; distributed feedback lasers; laser theory; semiconductor lasers; superradiance; DFB lasers; Green´s function; accurate measurement; amplified spontaneous emission; coupling coefficient; distributed feedback lasers; end reflections; lasing threshold; phaseshifts; reciprocal device; semiconductor laser parameter extraction; spontaneous emission spectrum; wave equation; Distributed feedback devices; Green´s function methods; Laser feedback; Optical coupling; Optical reflection; Parameter extraction; Partial differential equations; Phase measurement; Semiconductor lasers; Spontaneous emission;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.329632

Filename

329632