Optical frequency stabilisation and linewidth reduction of a multielectrode DFB laser with current feedback

H. Yasaka, Y. Yoshikuni, Y. Nakano, K. Oe

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

Optical frequency stabilisation and linewidth reduction by the current feedback technique were studied with a multi-electrode DFB laser. In the current feedback technique, phase rotation in the feedback loop, particularly induced by a laser, is the fundamental problem. This problem was resolved by using multielectrode DFB lasers without phase inversion. We simultaneously succeeded in optical frequency stabilisation and linewidth reduction with only one feedback electrical circuit. Optical frequency drift and spectral linewidth were reduced to 1/14 and 1/126, respectively, of those in the free-running state. The minimum spectral linewidth obtained was 95 kHz.

Original languageEnglish
Pages (from-to)1161-1162
Number of pages2
JournalElectronics Letters
Volume23
Issue number21
DOIs
Publication statusPublished - 1987 Jan 1
Externally publishedYes

Keywords

  • Semiconductor lasers

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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