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Proceedings Paper

Integrated Mach-Zehnder interferometer on the end facet of multicore fiber for refractive index sensing application
Author(s): Yanwen Qi; Siyao Zhang; Shengfei Feng; Xinke Wang; Wenfeng Sun; Jiasheng Ye; Peng Han; Yan Zhang
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Paper Abstract

A sensitive, real-time seven core optical fiber based Mach-Zehnder interferometer (MZI) sensor for liquid refractive index detection is proposed, fabricated and characterized. A trapezoid body with an inverted wedge shape groove in the center is used to design the MZI. The two ends of the trapezoid body play the roles of micro-prisms, and the middle parts of the trapezoid body and the groove play the roles of reference and sensing arms. A series of performance tests were carried out by immersing the sensor in different kinds of solutions to verify the universal applicability of the sensor. The MZI sensor is as small as only 43 μm × 8 μm, and at the same time with sensitivity of 1616 nm/RIU. Nominally, we realized a completely integrated optical sensing system. And, this system actually could be the building block of more powerful integrated chemical sensing chip for health, security and industry application.

Paper Details

Date Published: 12 January 2018
PDF: 6 pages
Proc. SPIE 10623, 2017 International Conference on Optical Instruments and Technology: IRMMW-THz Technologies and Applications, 106230T (12 January 2018); doi: 10.1117/12.2302441
Show Author Affiliations
Yanwen Qi, Capital Normal Univ. (China)
Siyao Zhang, Capital Normal Univ. (China)
Shengfei Feng, Capital Normal Univ. (China)
Xinke Wang, Capital Normal Univ. (China)
Wenfeng Sun, Capital Normal Univ. (China)
Jiasheng Ye, Capital Normal Univ. (China)
Peng Han, Capital Normal Univ. (China)
Yan Zhang, Capital Normal Univ. (China)

Published in SPIE Proceedings Vol. 10623:
2017 International Conference on Optical Instruments and Technology: IRMMW-THz Technologies and Applications
Cunlin Zhang; Xi-Cheng Zhang; Zhiming Huang; Liquan Dong, Editor(s)

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