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Study on Polymer Coated Etched Optical Fiber for pH Sensing

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A low cost optical fiber pH sensor has been proposed. The sensor is configured by coating a pH sensitive film of hydrogel synthesized by Poly (Vinyl Alcohol)/Poly (Acrylic Acid) blend coated on an etched single mode fiber. The pH response of the gel coated fiber is studied.

© 2014 Optical Society of America

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