Broad-range wavelength-tunable superstructure grating (SSG) DBR lasers

Author

Tohmori, Yuichi ; Yoshikuni, Yuzo ; Ishii, Hiroyuki ; Kano, Fumiyoshi ; Tamamura, Toshiaki ; Kondo, Yasuhiro ; Yamamoto, Mitsuo

Author_Institution

Opto-Electronics Lab., NTT, Kanagawa, Japan

Volume

29

Issue

6

fYear

1993

fDate

6/1/1993 12:00:00 AM

Firstpage

1817

Lastpage

1823

Abstract

A broad tuning range is demonstrated in tunable DBR lasers with a novel superstructure grating (SSG). These SSG reflectors were fabricated by electron-beam lithography, and grating performance was evaluated by measuring the transmittance characteristics of a ridge-type SSG reflector. Incorporating this SSG reflector into distributed-Bragg-reflector (DBR) laser results in lasers that can be tuned over a wide wavelength range by using coarse and fine tuning mechanisms. Wavelength-tunable SSG DBR lasers were fabricated and operated under low-threshold CW conditions. Wavelength tuning ranges of 50 and 100 nm were designed and experimentally measured to be 50 and 83 nm, respectively, with single-mode operation

Keywords

diffraction gratings; distributed Bragg reflector lasers; laser accessories; laser tuning; semiconductor lasers; broad range wavelength tunable superstructure grating DBR lasers; broad tuning range; distributed Bragg reflector lasers; electron-beam lithography; fine tuning mechanisms; grating performance; low threshold continuous wave conditions; ridge type superstructure grating reflector; transmittance characteristics; Distributed Bragg reflectors; Distributed feedback devices; Gratings; Laser feedback; Laser transitions; Laser tuning; Optical tuning; Refractive index; Tunable circuits and devices; Wavelength measurement;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/3.234439

Filename

234439