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Applied Optics

Applied Optics


  • Vol. 37, Iss. 19 — Jul. 1, 1998
  • pp: 4105–4111

Modified white-light Mach–Zehnder interferometer for direct group-delay measurements

Yi Liang and Chandler P. Grover  »View Author Affiliations

Applied Optics, Vol. 37, Issue 19, pp. 4105-4111 (1998)

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A modified white-light Mach–Zehnder interferometer based on a single beam splitter is described for direct group-delay measurements. The arms of the interferometer are folded in such a manner that a single beam splitter can be used to split the incoming beam and combine the outgoing beams. This method offers a twofold advantage: The measuring range of the interferometer is twice as large as that of the Michelson interferometer, and the systematic error that is associated with the beam splitter is minimized because of the configuration. We report the results of measurements on various optical components performed in the 555–630-nm spectral region and propose a scheme for the processing of the experimental data. We present a comparison of the data analyzed by the proposed processing scheme along with the theoretical calculations.

© 1998 Optical Society of America

OCIS Codes
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(230.0230) Optical devices : Optical devices

Original Manuscript: June 20, 1997
Revised Manuscript: October 27, 1997
Published: July 1, 1998

Yi Liang and Chandler P. Grover, "Modified white-light Mach–Zehnder interferometer for direct group-delay measurements," Appl. Opt. 37, 4105-4111 (1998)

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