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Optics Letters

Optics Letters


  • Vol. 30, Iss. 16 — Aug. 15, 2005
  • pp: 2059–2061

Fiber-diffraction interferometer for vibration desensitization

Hagyong Kihm and Seung-Woo Kim  »View Author Affiliations

Optics Letters, Vol. 30, Issue 16, pp. 2059-2061 (2005)

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We describe a new interferometer designed to obtain high immunity to vibration by generating the reference wave by means of fiber diffraction so as to share a common path with the measurement wave. A spatial phase shifter is added to secure vibration desensitization by capturing four phase-shifted interferograms simultaneously without time delay. Experimental results prove that the proposed interferometer is capable of providing stable measurements with a level of fringe stabilization of less than 1 nm in a typical workshop environment equipped with no excessive ground isolation for antivibration.

© 2005 Optical Society of America

OCIS Codes
(050.1940) Diffraction and gratings : Diffraction
(060.2430) Fiber optics and optical communications : Fibers, single-mode
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.4800) Instrumentation, measurement, and metrology : Optical standards and testing

Hagyong Kihm and Seung-Woo Kim, "Fiber-diffraction interferometer for vibration desensitization," Opt. Lett. 30, 2059-2061 (2005)

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