1.55-μm narrow-linewidth and high-power distributed feedback lasers for coherent transmission systems

Author

Sato, Kenji ; Kondo, Yasuhiro ; Nakao, Masashi ; Fukuda, Mitsuo

Author_Institution

NTT Optoelectron. Labs., Kanagawa, Japan

Volume

7

Issue

10

fYear

1989

fDate

10/1/1989 12:00:00 AM

Firstpage

1515

Lastpage

1519

Abstract

Stable operation of 1.55-μm distributed feedback lasers with a narrow linewidth and high power is demonstrated for coherent transmission systems. Narrow linewidth and high power were realized by improving the geometrical uniformity of the active region and thinning the active layer by using MOVPE and a dry-etching technique. A narrow linewidth of 1 MHz was achieved at a high power of 20 mW for a distributed feedback laser with a thin active layer of 0.07 μm and a long cavity of 1.2 mm

Keywords

distributed feedback lasers; etching; laser cavity resonators; laser transitions; optical communication equipment; semiconductor junction lasers; vapour phase epitaxial growth; 0.07 micron; 1.2 mm; 1.55 micron; 20 mW; MOVPE; active layer thinning; active region geometrical uniformity; coherent transmission systems; dry-etching technique; high-power distributed feedback lasers; long laser cavity; narrow-linewidth DFBL; semiconductor lasers; Distributed feedback devices; Gratings; Laser feedback; Optical feedback; Optical films; Optical receivers; Optical refraction; Optical sensors; Optical variables control; Power lasers;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/50.39091

Filename

39091