Transmission performance improvement of fiber DFB laser by injection locking

W. H. Chung, Hwa Yaw Tam, L. Y. Chan, Ping Kong Alexander Wai

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review


An active injection locking technique was proposed to improve the transmission characteristics of a distributed feedback fiber laser (DFB-FL). The DFB-FL was fabricated by scanning phase mask method in an Er/Yb-codoped fiber. A polarization independent circulator was employed to inject the DFB-FL to a Fabry-Perot laser diode. The side mode suppression ratio of the injection locked laser was 45 dB and improved to 70 dB using an optical bandpass filter. Linear polarized output was obtained and relative intensity noise at the relaxation oscillation frequency was effectively suppressed.
Original languageEnglish
Title of host publicationPacific Rim Conference on Lasers and Electro-Optics, CLEO - Technical Digest
Number of pages2
Publication statusPublished - 1 Jan 2002
EventConference on Lasers and Electro-Optics (CLEO 2002) - Long Beach, CA, United States
Duration: 19 May 200224 May 2002


ConferenceConference on Lasers and Electro-Optics (CLEO 2002)
Country/TerritoryUnited States
CityLong Beach, CA

ASJC Scopus subject areas

  • Physics and Astronomy(all)


Dive into the research topics of 'Transmission performance improvement of fiber DFB laser by injection locking'. Together they form a unique fingerprint.

Cite this