Twisted Optical Microfibers for Refractive Index Sensing

被引：37

作者：

Liao, C. R. ^{[1
]}

Wang, D. N. ^{[1
]}

He, Xiaoying ^{[1
]}

Yang, M. W. ^{[1
]}

机构：

[1] Hong Kong Polytech Univ, Dept Elect Engn, Kowloon, Hong Kong, Peoples R China

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2011年 / 23卷 / 13期

关键词：

Optical microfiber; refractive index sensor; FIBER; MODE; EXCITATION;

D O I：

10.1109/LPT.2011.2138126

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A simple, compact, and robust refractive index sensor is developed, by twisting a pair of silica microfibers to form a coupling device. The transmission spectrum of the device is highly sensitive to the surrounding refractive index and the highest sensitivity obtained is -2377 nm/refractive index unit (RIU), at the refractive index value of -1.3680, for the fibers with diameter of similar to 4.2 mu m, and the sensitivity can be further increased to -2735 nm/RIU for a smaller fiber diameter of similar to 2.8 mu m. Such a device is easy to construct, of low cost, and compatible with the optical fiber system.

引用

页码：848 / 850

页数：3

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