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Proceedings Paper

Optimal contrast function in the unbalanced fiber optic Michelson interferometer for dislocation sensor
Author(s): Mieczyslaw Szustakowski; Norbert Palka; Wieslaw M. Ciurapinski
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Paper Abstract

Theoretical description of a contrast in an unbalanced fiber optic Michelson's interferometer with a multimode laser was shown. Periodic contrast oscillations, which depend on a laser spectrum, occur if a measuring arm of the interferometer is elongated. Required characteristic features of the contrast for an elongation sensor were determined. Influences of laser spectrum parameters (wavelength, halfwidth and mode spacing) as well as laser mode amplitudes on the contrast were simulated. Optimal spectrum for the dislocation sensor was determined theoretically. A laser which parameters fulfilled the requirements was found and its spectrum was measured. The measured contrast function was very similar to the optimal theoretical plot what proves correctness of the calculations.

Paper Details

Date Published: 8 September 2004
PDF: 6 pages
Proc. SPIE 5576, Lightguides and their Applications II, (8 September 2004); doi: 10.1117/12.583372
Show Author Affiliations
Mieczyslaw Szustakowski, Military Univ. of Technology (Poland)
Norbert Palka, Military Univ. of Technology (Poland)
Wieslaw M. Ciurapinski, Military Univ. of Technology (Poland)

Published in SPIE Proceedings Vol. 5576:
Lightguides and their Applications II
Jan Wojcik; Waldemar Wojcik, Editor(s)

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