Optic fiber interferometric system for absolute distance measurement

Shenghua Ye; Hai Xiao; Haitao Hong; Chunhe Wang

doi:10.1117/12.229244

3 January 1996 Optic fiber interferometric system for absolute distance measurement

Shenghua Ye, Hai Xiao, Haitao Hong, Chunhe Wang

Proceedings Volume 2594, Self-Calibrated Intelligent Optical Sensors and Systems; (1996) https://doi.org/10.1117/12.229244
Event: Photonics East '95, 1995, Philadelphia, PA, United States

Abstract

An optic fiber interferometric system for measuring absolute distance up to 1 meter is presented. Two interferometers are employed in this system. A fiber Mach-Zehnder structured interferometer using a laser diode as source is set up to position the target and tuning the optic paths. Another fiber Mach-Zehnder structured interferometer with He-Ne laser source is used to measure the displacement. To expend the dynamic range of the system, the method of multiplexing the optic path by introducing accurately calibrated optic fibers into the system is illustrated. In addition, the signal processing methods used in the system are also discussed in the paper.

Citation Download Citation

Shenghua Ye, Hai Xiao, Haitao Hong, and Chunhe Wang "Optic fiber interferometric system for absolute distance measurement", Proc. SPIE 2594, Self-Calibrated Intelligent Optical Sensors and Systems, (3 January 1996); https://doi.org/10.1117/12.229244

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