Refractive index measurement by using multimode interference

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

doi:10.1117/12.886092

17 May 2011 Refractive index measurement by using multimode interference

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

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.

Citation Download Citation

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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