13 μm fiber grating in a thin-core fiber for LP01–LP11 mode converters and sensing ability
Document Type
Article
Publication Date
1-1-2019
Abstract
We demonstrate an all-fiber structure that can realize LP01 − LP11 mode conversion and twist measurement. It is a thin-core fiber (TCF) grating at a wavelength of 1310 nm cascaded to a short segment of a TCF of a different core size. It is found that the different core size of the TCF between the fiber and the grating has an impact on the excitation of a higher-order mode and mode conversion efficiency. The fiber structure exhibits a good linear response to twisting, strain, and temperature. Depending on the associated mode, the mode intensity and the wavelength for exciting the peaks of the grating have different sensitivities to twisting angle, applied strain, and temperature. These properties can be exploited for simultaneous measurement. © 2019 Optical Society of America
Keywords
All fiber structure, Fiber structures, Higher-order modes, Linear response, Mode conversions, Sensing abilities, Simultaneous measurement, Thin-core fibers
Divisions
photonics
Funders
National Natural Science Foundation of China (NSFC) (61377087, 61405160),Shaanxi Young Scientist Star Program (2016KJXX-04),Projects of the Scientific Research Plan of the Shaanxi Education Department (15JK1751),Shaanxi Natural Science Foundation (s2010jc3655),Northwest University Young Scientist Support Program (NJ00089),Ministry of Education, Malaysia FRGS (FP033-2017A)
Publication Title
Applied Optics
Volume
58
Issue
16
Publisher
Optical Society of America