DOI: 10.17586/1023-5086-2018-85-04-53-59

High-sensitivity fiber temperature and refractive index sensing with nonadiabatic fiber taper

Hu, Yihui, Jiang, Chao, Zhou, Ming, Liu, Jibing

Publication in Journal of Optical Technology

For Russian citation (Opticheskii Zhurnal):

Yihui Hu, Chao Jiang, Ming Zhou, Jibing Liu High-sensitivity fiber temperature and refractive index sensing with nonadiabatic fiber taper (Высокочувствительный датчик изменений температуры и показателя преломления на основе оптического волокна с неадиабатическим утоньшением) [на англ. яз.] // Оптический журнал. 2018. Т. 85. № 4. С. 53–59. http://doi.org/10.17586/1023-5086-2018-85-04-53-59

Yihui Hu, Chao Jiang, Ming Zhou, Jibing Liu High-sensitivity fiber temperature and refractive index sensing with nonadiabatic fiber taper (Высокочувствительный датчик изменений температуры и показателя преломления на основе оптического волокна с неадиабатическим утоньшением) [in English] // Opticheskii Zhurnal. 2018. V. 85. № 4. P. 53–59. http://doi.org/10.17586/1023-5086-2018-85-04-53-59

For citation (Journal of Optical Technology):

Yihui Hu, Chao Jiang, Ming Zhou, and Jibing Liu, "High-sensitivity fiber temperature and refractive index sensing with nonadiabatic fiber taper," Journal of Optical Technology. 85(4), 233-237 (2018). https://doi.org/10.1364/JOT.85.000233

Abstract:

In the paper, simultaneous measurement temperature and external refractive index is achieved in the present scheme, this scheme is based on Mach–Zehnder interferometer using a nonadiabatic single mode fiber taper without an air cavity. This scheme is quite simple and the smallest diameter of the tapered fiber is about 83.1 micrometers and the length of tapered fiber is about 1 centimeter. The transmission spectrum of the nonadiabatic tapered fiber exhibits a number of resonance wavelength dips which corresponds to different orders of cladding modes. The interferometer can be used for simultaneous refractive index (RI) and temperature sensing by monitoring the variation of selected two wavelength dips. The sensitivity achieved are –44.69 nm/RIU and 0.0386 nm/°C, and –72.21 nm/RIU and 0.0321 nm/°C for refractive index (RI) and temperature, respectively. The proposed tapered single mode optical fiber interferometer would find potential applications in multiple-parameter sensing owing to its high sensitivity, compactness, ease of fabrication, and low cost.

Keywords:

optical fiber, Mach–Zehnder interferometer, temperature, refractive index

Acknowledgements:

The research is supported in part by the Scientific and Technological Research Program of Education Department of Hubei Province (D20152501) and by the program of Outstanding Innovation Team of Hubei Normal University (No: T201502) and by Hubei Undergraduate Training Programs for Innovation and Entrepreneurship Training Programs (201610513029). J. Liu acknowledges Dr. Y. Wang, H. Gong, H. Liu, F. Yang, C. Wang and K. Ni for their enlightening suggestions and help.

OCIS codes: 060.2370, 060.2430, 060.4005

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