1. 5- mu M lambda /4-SHIFTED INGAASP/INP DFB LASERS.

Shigeyuki Akiba, Masashi Usami, Katsuyuki Utaka

Research output: Contribution to journalArticle

36 Citations (Scopus)

Abstract

A single-wavelength light source in the 1. 5- mu m range was developed using InGaAsP/InP lambda /4-shifted distributed feedback (DFB) semiconductor heterostructures. Superiority of the lambda /4-shifted DFB structure in terms of stability of the main mode at the Bragg wavelength was shown theoretically. The threshold, the output, and the polarization characteristics were taken into account. A lambda /4-shifted corrugated grating was made by a recently developed negative and positive photoresists technique. Buried heterostructure (BH) diode lasers with nonreflective window ends were fabricated and highly stable single-mode operation with a low threshold was obtained reproducibly. Direct modulation properties and life-tests results indicated that the lambda /4-shifted DFB lasers could be a reliable single-mode light source in a long-span lightwave transmission system in the 1. 5- mu m range.

Original languageEnglish
Pages (from-to)1564-1573
Number of pages10
JournalJournal of Lightwave Technology
VolumeLT-5
Issue number11
Publication statusPublished - 1987
Externally publishedYes

Fingerprint

Distributed feedback lasers
distributed feedback lasers
Light sources
Heterojunctions
Feedback
Wavelength
light sources
Photoresists
Laser modes
Semiconductor lasers
polarization characteristics
thresholds
Modulation
Polarization
Semiconductor materials
photoresists
wavelengths
semiconductor lasers
gratings
modulation

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Atomic and Molecular Physics, and Optics

Cite this

1. 5- mu M lambda /4-SHIFTED INGAASP/INP DFB LASERS. / Akiba, Shigeyuki; Usami, Masashi; Utaka, Katsuyuki.

In: Journal of Lightwave Technology, Vol. LT-5, No. 11, 1987, p. 1564-1573.

Research output: Contribution to journalArticle

Akiba, S, Usami, M & Utaka, K 1987, '1. 5- mu M lambda /4-SHIFTED INGAASP/INP DFB LASERS.', Journal of Lightwave Technology, vol. LT-5, no. 11, pp. 1564-1573.
Akiba, Shigeyuki ; Usami, Masashi ; Utaka, Katsuyuki. / 1. 5- mu M lambda /4-SHIFTED INGAASP/INP DFB LASERS. In: Journal of Lightwave Technology. 1987 ; Vol. LT-5, No. 11. pp. 1564-1573.
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