Compact refractometer based on extrinsic
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Wenjun Zhou; Xinyong Dong; Li-Yang Shao; Chi Chiu Chan; Chun-Liu Zhao; Ping Shum
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Article
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2011
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Elsevier Science
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English
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A novel method to measure refractive index of liquids by using an extrinsic-phase-shift fiber Bragg grating (EPS-FBG) is proposed and experimentally demonstrated. The EPS-FBG is obtained by separating two identical FBG reflectors with a micrometer air gap as a phase-shift. This gap forms a phase-shi