Refractive index measurement by using multimode interference

被引：2
作者：
Jin, Y. X. [1 ]
Chan, C. C. [2 ]
Zhao, Y. [1 ]
Dong, X. Y. [1 ]
机构：
[1] China Jiliang Univ, Inst Optoelect Technol, Xueyuan St, Hangzhou 310018, Zhejiang, Peoples R China
[2] Nanyang Technol Univ, Sch Chem & Biomed Engn, Div Bio engn, Singapore 637457, Singapore
来源：
21ST INTERNATIONAL CONFERENCE ON OPTICAL FIBER SENSORS | 2011年 / 7753卷
关键词：
Refractive index measurement; Fiber optic sensors; Multimode interference; FIBER; SENSOR; GRATINGS;
D O I：
10.1117/12.886092
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
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 5.4x10(-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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页数：4
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