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Fiber-optic displacement sensor using a multimode bundle fiber

✍ Scribed by Moh. Yasin; S. W. Harun; Kusminarto Karyono; H. Ahmad

Publisher
John Wiley and Sons
Year
2008
Tongue
English
Weight
119 KB
Volume
50
Category
Article
ISSN
0895-2477

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✦ Synopsis

Abstract

A simple fiber optic displacement sensor based on intensity modulation technique is demonstrated using a bundle multimode plastic fiber as a probe. The sensor consists of a light source, a probe, and photodiode detector. The sensor is capable of measuring displacements of mirror ranging from 0.05 to 2.2 mm using a red light source of wavelength 632.8 nm with maximum output power of 1 mW. The sensitivity of the device is found to be 168.8 mV/mm over 0.05–0.35 mm range and βˆ’29.8 mV/mm over 1.05–2.2 mm range. The sensor is highly sensitive at the front slope and very useful for close distance target. The simplicity of the design, high degree of sensitivity, dynamic range and the low cost of the fabrication make it suitable for applications in industries as position control and micro displacement measurement in the hazardous region. Β© 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 661–663, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23147

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