The use of a multimode (compact-disk type) laser diode in a dual Michelson interferometer arrangement is investigated, both theoretically and experimentally, by using the technique of coherence length modulation. A reproducible way of shifting the interference regions is considered for the potential use of the technique in optical sensors, for flow or distance measurement.
© 1992 Optical Society of America
Original Manuscript: May 8, 1990
Published: March 20, 1992
Y. N. Ning, K. T. V. Grattan, A. W. Palmer, and B. T. Meggitt, "Coherence length modulation of a multimode laser diode in a dual Michelson interferometer configuration," Appl. Opt. 31, 1322-1327 (1992)