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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 37, Iss. 9 — May. 1, 2012
  • pp: 1544–1546

Sub-watt threshold, kilohertz-linewidth Raman distributed-feedback fiber laser

Jindan Shi, Shaif-ul Alam, and Morten Ibsen  »View Author Affiliations

Optics Letters, Vol. 37, Issue 9, pp. 1544-1546 (2012)

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We report a low-threshold, narrow linewidth Raman distributed-feedback (R-DFB) fiber laser at 1109.54 nm based on a 30 cm long center π phase-shifted Bragg grating written directly in a commercially available germano-silica (Ge/Si) fiber. The R-DFB was pumped by a continuous-wave (CW) linearly polarized fiber source at 1064 nm, and the threshold power, full width at half-maximum (FWHM) linewidth and slope efficiency with respect to the incident pump power are measured to be 440 mW, <2.5kHz (measured with a 29.75 km fiber delay line) and 13.5%, respectively. An rf spectrum analyzer confirms that the R-DFB fiber laser exhibits single-frequency performance.

© 2012 Optical Society of America

OCIS Codes
(140.3490) Lasers and laser optics : Lasers, distributed-feedback
(140.3510) Lasers and laser optics : Lasers, fiber
(140.3550) Lasers and laser optics : Lasers, Raman
(060.3735) Fiber optics and optical communications : Fiber Bragg gratings

ToC Category:
Lasers and Laser Optics

Original Manuscript: January 26, 2012
Revised Manuscript: February 21, 2012
Manuscript Accepted: February 21, 2012
Published: May 1, 2012

Jindan Shi, Shaif-ul Alam, and Morten Ibsen, "Sub-watt threshold, kilohertz-linewidth Raman distributed-feedback fiber laser," Opt. Lett. 37, 1544-1546 (2012)

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