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Serrodyne optical frequency shifting for heterodyne self-mixing in a distributed-feedback fiber laser

Abstract : We describe an all-fiberized coherent detection system at 1.55 μm using heterodyne self-mixing modulation in a distributed-feedback fiber laser. Frequency shifting of the optical feedback is based on serrodyne phase modulation with an integrated electro-optic modulator, which is a significant advance in the simplification of the self-mixing detection scheme for class B lasers. Accurate measurement of the optical phase difference between the laser electric field and the backscattered electric field demonstrates nanometric displacement detection on noncooperative targets.
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https://hal-cea.archives-ouvertes.fr/cea-00344373
Contributor : Chantal Brassy <>
Submitted on : Thursday, December 4, 2008 - 3:55:57 PM
Last modification on : Tuesday, October 6, 2020 - 4:26:40 PM

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  • HAL Id : cea-00344373, version 1

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Mathieu Laroche, Célia Bartolacci, Guillaume Lesueur, Hervé Gilles, Sylvain Girard. Serrodyne optical frequency shifting for heterodyne self-mixing in a distributed-feedback fiber laser. Optics Letters, Optical Society of America - OSA Publishing, 2008, 33, pp.2746-2748. ⟨cea-00344373⟩

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