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  • Vol. 27, Iss. 13 — Jul. 1, 2002
  • pp: 1114–1116

Frequency noise reduction in erbium-doped fiber distributed-feedback lasers by electronic feedback

G. A. Cranch  »View Author Affiliations


Optics Letters, Vol. 27, Issue 13, pp. 1114-1116 (2002)
http://dx.doi.org/10.1364/OL.27.001114


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Abstract

A novel technique for suppressing frequency noise in an erbium-doped fiber distributed-feedback laser incorporated into a master-oscillator–power-amplifier configuration by an electronic feedback technique is presented. The frequency noise is suppressed by locking of the laser emission to a fiber interferometer. The frequency noise spectral density of the laser is reduced by as much as 20 dB over the frequency range 1 Hz–10 kHz to 1.5 Hz/Hz<sup>1/2</sup> ±25% at 1 kHz with a relative intensity noise spectral density below -120 dB/Hz over the frequency range 10 Hz–1 kHz. These lasers will have applications as sources for fiber-optic interferometry, high-resolution spectroscopy, and high-bandwidth communications.

© 2002 Optical Society of America

OCIS Codes
(060.2320) Fiber optics and optical communications : Fiber optics amplifiers and oscillators
(140.3500) Lasers and laser optics : Lasers, erbium
(140.3510) Lasers and laser optics : Lasers, fiber
(140.3570) Lasers and laser optics : Lasers, single-mode

Citation
G. A. Cranch, "Frequency noise reduction in erbium-doped fiber distributed-feedback lasers by electronic feedback," Opt. Lett. 27, 1114-1116 (2002)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-27-13-1114


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