Journal
OPTICS LETTERS
Volume 42, Issue 19, Pages 3892-3895Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.42.003892
Keywords
-
Categories
Funding
- Natural Science Foundation of Tianjin City [15JCZDJC3980]
- National Natural Science Foundation of China (NSFC) [10974100, 11274181, 61405179]
- Doctoral Scientific Fund Project of the Ministry of Education [20120031110033]
- Open Fund of the Key Laboratory of Optical Information Science Technology
- Nankai University
Ask authors/readers for more resources
A novel bidirectional high-sensitivity fiber-optic bending sensor based on the concave-lens-like long-period fiber grating (CLL-LPFG) is designed and demonstrated. The CLL-LPFG is composed by an array of arc-shaped grating planes, and accordingly, its refractive index modulation serves as a concave lens. As a result, the eigencladding mode of the device gets closer to the device surface than the conventional counterpart. Therefore, the proposed sensor provides a more sensitive result. The experimental results show that the bending sensitivities of the CLL-LPFG reach -32.782 nm/m(-1) within the bending range of 0-2.08 m(-1), which is about sixfold compared to the reported arts. The sensitivity can be potentially improved by optimizing the grating parameters, and the temperature characteristics of the CLL-LPFG can be used to manipulate the grating spectrum. (C) 2017 Optical Society of America
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available