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Proceedings Paper

Pulsed laser diode optical fiber interferometer for absolute distance measurement
Author(s): Chunhe Wang; Hai Xiao; Haitao Hong; Shenghua Ye
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Paper Abstract

An interferometry system for absolute distance measurement is described. In the system, an optical fiber Mach-Zehnder interferometer with a chirped laser diode is employed to position the measured object. Another interferometer with He-Ne laser is used to measure the optical path difference. The coherence-length of the pulsed multimode laser diode is studied. In the experiments, the system measured the absolute distance up to 1 meter with the accuracy of 2 micrometer.

Paper Details

Date Published: 25 October 1996
PDF: 4 pages
Proc. SPIE 2839, Fiber Optic and Laser Sensors XIV, (25 October 1996); doi: 10.1117/12.255370
Show Author Affiliations
Chunhe Wang, Tianjin Univ. (China)
Hai Xiao, Tianjin Univ. (China)
Haitao Hong, Tianjin Univ. (China)
Shenghua Ye, Tianjin Univ. (China)


Published in SPIE Proceedings Vol. 2839:
Fiber Optic and Laser Sensors XIV
Ramon P. DePaula; John W. Berthold, Editor(s)

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