## Abstract We present a new bend sensor which can measure the curvature using an etched fiber Bragg grating (FBG) embedded into a beam. The reflection power of the grating detected by an optical power meter varies linearly with the curvature of the beam. This sensor is independent of temperature.
Liquid level sensor using etched silica fiber
✍ Scribed by J. Linesh; K. Sudeesh; P. Radhakrishnan; V. P. N. Nampoori
- Publisher
- John Wiley and Sons
- Year
- 2010
- Tongue
- English
- Weight
- 151 KB
- Volume
- 52
- Category
- Article
- ISSN
- 0895-2477
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✦ Synopsis
Abstract
An all optical fiber, intensity modulated sensor for discrete liquid level sensing is presented. The highly sensitive and robust design requires only silica fibers, an optical source and a detector. The sensor probe is prepared by etching the silica fibers using hydrofluoric acid. Experiments conducted with water confirm the ability of the sensor to detect liquid level variation below 10 μm. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52:883–886, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.25037
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