Journal
IEEE PHOTONICS TECHNOLOGY LETTERS
Volume 16, Issue 4, Pages 1149-1151Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LPT.2004.824972
Keywords
optical fibers; refractive index measurements; thinned fiber Bragg grating (FBG) sensors
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In this work, the numerical and experimental analysis on the use of thinned fiber Bragg gratings as refractive index sensors have been carried out. Wet chemical etching in a buffered hydrofluoric acid solution was used for sensor fabrication. Experimental characterization for an almost full etched cladding sensor is presented demonstrating good agreement with numerical results and resolutions of approximate to 10(-5) and approximate to 10(-4) for outer refractive index around 1.45 and 1.333, respectively.
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