Bend monitoring and refractive index sensing using flat fibre and multicore Bragg gratings

被引：11
|
作者：
Holmes, Christopher [1 ]
Ambran, Sumiaty [2 ]
Cooper, Peter A. [1 ]
Webb, Andrew S. [1 ]
Gates, James C. [1 ]
Gawith, Corin B. E. [1 ]
Sahu, Jayanta K. [1 ]
Smith, Peter G. R. [1 ]
机构：
[1] Univ Southampton, Optoelect Res Ctr, Southampton SO17 1BJ, Hants, England
[2] Univ Teknol Malaysia, Malaysia Japan Int Inst Technol, Kuala Lumpur, Malaysia
来源：
MEASUREMENT SCIENCE AND TECHNOLOGY | 2020年 / 31卷 / 08期
基金：
英国工程与自然科学研究理事会;
关键词：
optical fibre; Bragg gratings; multicore fibre; planar optics; bend sensing; OPTICAL-FIBER; FABRICATION; ACCURACY; PLATFORM;
D O I：
10.1088/1361-6501/ab8710
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A planarized optical fibre designed for two-dimensional bend monitoring and external refractive index sensing is presented. The approach uses two single-mode waveguides each containing a set of spectrally multiplexed Bragg gratings. To achieve sensitivity to bending and external refractive index, the cladding material of the fibre is partially removed through physical machining. This acts to offset the neutral axis, increasing bend sensitivity, and exposes the evanescent field of the guided mode, permitting external refractive index monitoring. Through collective monitoring of the Bragg grating array, real time, multiparameter sensing is attainable, allowing new capability for intelligent monitoring.
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收藏
页数：6
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