Gain-coupled DFB lasers versus index-coupled and phase shifted DFB lasers: a comparison based on spatial hole burning corrected yield

Author

David, Klaus ; Morthier, Geert ; Vankwikelberge, Patrick ; Baets, Roel G. ; Wolf, Thomas ; Borchert, Bernd

Author_Institution

Lab. for Electromagn. & Acoust., Gent Univ., Belgium

Volume

27

Issue

6

fYear

1991

fDate

6/1/1991 12:00:00 AM

Firstpage

1714

Lastpage

1723

Abstract

A statistical yield analysis is presented for gain- and index-coupled distributed feedback (DFB) laser structures, allowing a comparison of their single longitudinal mode (SLM) yield capabilities. For the yield calculations, the threshold gain difference and the longitudinal spatial hole burning (SHB) are taken into account. By comparing the experimental and theoretical yield of index-coupled DFB lasers, the significance of SHB for correct yield predictions is illustrated. For the purpose of comparison, yield calculations for various λ/4-shifted DFB lasers (with low facet reflectivities) are presented. The most emphasis, however, is on partly gain-coupled DFB lasers. Estimations of practical gain coupling coefficient values for gain and for loss gratings are discussed

Keywords

distributed feedback lasers; laser modes; optical hole burning; index coupled distributed feedback laser structures; longitudinal spatial hole burning; loss gratings; partly gain-coupled DFB lasers; phase shifted DFB lasers; practical gain coupling coefficient; spatial hole burning corrected yield; statistical yield analysis; threshold gain difference; Design optimization; Frequency; Gratings; Laser feedback; Laser modes; Laser stability; Laser theory; Optical fiber communication; Performance gain; Reflectivity;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/3.89938

Filename

89938