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Chinese Optics Letters

Chinese Optics Letters

| PUBLISHED MONTHLY BY CHINESE LASER PRESS AND DISTRIBUTED BY OSA

  • Editor: Zhizhan Xu
  • Vol. 11, Iss. 4 — Apr. 1, 2013
  • pp: 041407–

Short distributed feedback f iber laser with unidirectional output for sensing applications

Haifeng Qi, Zhiqiang Song, Gangding Peng, Shujuan Li, and Chang Wang  »View Author Affiliations


Chinese Optics Letters, Vol. 11, Issue 4, pp. 041407- (2013)


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Abstract

A short distributed feedback fiber laser with a nearly unidirectional output is fabricated and tested. The short fiber laser is made of a polarization-dependent phase-shift grating fabricated with a vertically polarized 244-nm ultraviolet (UV) laser. A single π phase-shift is introduced to a 2-cm grating at a specified position by directly moving the phase mask during UV beam scanning. Test results show that the laser has a single polarization longitudinal mode with 2.6-mW pump threshold. The backward-to- forward output power ratio is approximately 30:1. The relative intensity noise is -88 dB/Hz, and the linewidth is approximately 10 kHz at 75-mW 980-nm pumping. The unidirectional output and short dimension of this short fiber laser make it very useful in sensing applications, especially in multiplexed sensing applications.

© 2013 Chinese Optics Letters

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(140.3490) Lasers and laser optics : Lasers, distributed-feedback
(140.3510) Lasers and laser optics : Lasers, fiber

ToC Category:
Lasers and Laser Optics

Citation
Haifeng Qi, Zhiqiang Song, Gangding Peng, Shujuan Li, and Chang Wang, "Short distributed feedback f iber laser with unidirectional output for sensing applications," Chin. Opt. Lett. 11, 041407- (2013)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-11-4-041407

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