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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 34, Iss. 7 — Apr. 1, 2009
  • pp: 914–916

Ultralow-frequency-noise stabilization of a laser by locking to an optical fiber-delay line

Fabien Kéfélian, Haifeng Jiang, Pierre Lemonde, and Giorgio Santarelli  »View Author Affiliations

Optics Letters, Vol. 34, Issue 7, pp. 914-916 (2009)

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We report the frequency stabilization of an erbium-doped fiber distributed-feedback laser using an all-fiber-based Michelson interferometer of large arm imbalance. The interferometer uses a 1 km SMF-28 optical fiber spool and an acousto-optic modulator allowing heterodyne detection. The frequency-noise power spectral density is reduced by more than 40 dB for Fourier frequencies ranging from 1 Hz to 10 kHz , corresponding to a level well below 1 Hz 2 Hz over the entire range; it reaches 10 2 Hz 2 Hz at 1 kHz . Between 40 Hz and 30 kHz , the frequency noise is shown to be comparable to the one obtained by Pound–Drever–Hall locking to a high-finesse Fabry–Perot cavity. Locking to a fiber delay line could consequently represent a reliable, simple, and compact alternative to cavity stabilization for short-term linewidth reduction.

© 2009 Optical Society of America

OCIS Codes
(140.3425) Lasers and laser optics : Laser stabilization
(060.2840) Fiber optics and optical communications : Heterodyne

ToC Category:
Lasers and Laser Optics

Original Manuscript: January 6, 2009
Manuscript Accepted: February 6, 2009
Published: March 18, 2009

Fabien Kéfélian, Haifeng Jiang, Pierre Lemonde, and Giorgio Santarelli, "Ultralow-frequency-noise stabilization of a laser by locking to an optical fiber-delay line," Opt. Lett. 34, 914-916 (2009)

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