Refractive index measurement by using multimode interference

Y. X. Jin; C. C. Chan; Y. Zhao; X. Y. Dong

doi:10.1117/12.886092

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17 May 2011 Refractive index measurement by using multimode interference

Y. X. Jin, C. C. Chan, Y. Zhao, X. Y. Dong

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Proceedings Volume 7753, 21st International Conference on Optical Fiber Sensors; 77535F (2011) https://doi.org/10.1117/12.886092
Event: 21st International Conference on Optical Fibre Sensors (OFS21), 2011, Ottawa, Canada

Abstract

A fiber-optic refractometer based on the multimode interference in the singlemode-multimode-singlemode fiber structure is demonstrated. The refractive index dependence of the shift of re-imaging resonant wavelength of the proposed sensor is investigated. It shows that the proposed sensor has a measurement resolution of 5.4×10^-5 refractive index unit (RIU) for the changes of refractive indices from 1.336 to 1.372. The proposed sensor has a great potential for biological and chemical applications.

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Y. X. Jin, C. C. Chan, Y. Zhao, and X. Y. Dong "Refractive index measurement by using multimode interference", Proc. SPIE 7753, 21st International Conference on Optical Fiber Sensors, 77535F (17 May 2011); https://doi.org/10.1117/12.886092

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