Single-frequency and single-polarization fiber ring laser using a 5-GHz fiber Bragg grating

Hajime Inaba, Yoshiaki Akimoto, Koichi Tamura, Eiji Yoshida, Tetsuro Komukai, Masataka Nakazawa

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)


A low-threshold, single-frequency fiber laser was achieved without feedback control. This laser was a narrow linewidth fiber ring laser operating in the 1.55-μm regime and pumped by 1.48-μm InGaAsP laser diodes. Mode-hoping instabilities and multiwavelength oscillation due to spatial and polarization hole burning were eliminated by the use of an ultra-narrowband fiber Bragg grating and a polarization-dependent isolator. The laser exhibited stable single-frequency operation at all pump powers. The maximum output power was 1 mW, and the linewidth was less than 20 kHz.

Original languageEnglish
Pages (from-to)21-29
Number of pages9
JournalElectronics and Communications in Japan, Part II: Electronics (English translation of Denshi Tsushin Gakkai Ronbunshi)
Issue number5
Publication statusPublished - 1999 May
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Computer Networks and Communications
  • Electrical and Electronic Engineering


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