
Proceedings Paper
Enhanced modal interference in negative curvature fiber for sensing applicationsFormat | Member Price | Non-Member Price |
---|---|---|
$17.00 | $21.00 |
Paper Abstract
We report a novel method to enhance the modal interference pattern in an anti-resonant negative curvature hollow-core fiber (NCHCF), enabling in-fiber multimodal interferometer in a short (few mm) length. The enhanced interference provides well defined fringes suitable for sensing; and their application for mechanical sensing is demonstrated. An 8 mm length of NCHCF was exposed to periodic arcs from a conventional splicer, leading to periodic modulation of fiber parameters along the length of the fiber. This periodic modulation alters the interaction between interfering modal fields, causing enhanced modal overlap and a four-fold increase in the intensity variation of the interference pattern. The enhanced interference dips are observed to be sensitive, with a linear response, to external mechanical forces like curvature, while being insensitive to thermal crosstalk by virtue of the hollow core design.
Paper Details
Date Published: 3 March 2020
PDF: 6 pages
Proc. SPIE 11276, Optical Components and Materials XVII, 1127611 (3 March 2020); doi: 10.1117/12.2544498
Published in SPIE Proceedings Vol. 11276:
Optical Components and Materials XVII
Shibin Jiang; Michel J. F. Digonnet, Editor(s)
PDF: 6 pages
Proc. SPIE 11276, Optical Components and Materials XVII, 1127611 (3 March 2020); doi: 10.1117/12.2544498
Show Author Affiliations
Charu Goel, Nanyang Technological Univ. (Singapore)
Jichao Zang, Nanyang Technological Univ. (Singapore)
Jichao Zang, Nanyang Technological Univ. (Singapore)
Seongwoo Yoo, Nanyang Technological Univ. (Singapore)
Published in SPIE Proceedings Vol. 11276:
Optical Components and Materials XVII
Shibin Jiang; Michel J. F. Digonnet, Editor(s)
© SPIE. Terms of Use
