Analysis of the frequency components of phase-modulated white-light interferometry to determine the central maximum position

Craig McGarrity; David A. Jackson

doi:10.1117/12.255373

25 October 1996 Analysis of the frequency components of phase-modulated white-light interferometry to determine the central maximum position

Craig McGarrity, David A. Jackson

Author Affiliations +

Proceedings Volume 2839, Fiber Optic and Laser Sensors XIV; (1996) https://doi.org/10.1117/12.255373
Event: SPIE's 1996 International Symposium on Optical Science, Engineering, and Instrumentation, 1996, Denver, CO, United States

Abstract

A detailed theoretical analysis with numerical calculations was conducted to study the frequency spectrum resulting from the application of a sinusoidal phase modulation to a two beam interferometer illuminated by a low coherence source with a Gaussian spectral profile. Results of these calculations shows behavior of the frequency components which was unexpected from earlier derivations of the frequency spectrum. The results of the calculations have been experimentally confirmed using an all-fiber interferometer illuminated by a source with a Gaussian spectral profile. The results are useful for the signal processing of tandem interferometers for 'white light' interferometry.

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Craig McGarrity and David A. Jackson "Analysis of the frequency components of phase-modulated white-light interferometry to determine the central maximum position", Proc. SPIE 2839, Fiber Optic and Laser Sensors XIV, (25 October 1996); https://doi.org/10.1117/12.255373

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