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Proceedings Paper

Integrated fiber optic displacement sensor based on multimode interference
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Paper Abstract

An integrated fiber-optic displacement sensor based on multimode interference is characterized through analysis of experimental performance in comparison to the expected behavior that is theoretically predicted. Multimode interference and re-imaging theory applied to the specific fiber properties and geometry of the device can be used to design and predict the performance of the device. Essentially, the sensor consists of a multimode fiber of a specific length fusion spliced to a single mode fiber used in conjuction with an 80/20 splitter, source, and detector that are used to inject and detect reflected signals from targets. The sensor is fabricated into a robust, compact, and single arm device capable of operating as a calibrated displacement sensor over a large displacement range. This is achieved through analysis of power reflected off of a surface and back through the device over a finite wavelength range.

Paper Details

Date Published: 10 November 2003
PDF: 7 pages
Proc. SPIE 5177, Gradient Index, Miniature, and Diffractive Optical Systems III, (10 November 2003); doi: 10.1117/12.511124
Show Author Affiliations
Alok A. Mehta, CREOL/Univ. of Central Florida (United States)
Waleed Mohammed, CREOL/Univ. of Central Florida (United States)
Eric G. Johnson, CREOL/Univ. of Central Florida (United States)


Published in SPIE Proceedings Vol. 5177:
Gradient Index, Miniature, and Diffractive Optical Systems III
Thomas J. Suleski, Editor(s)

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