Theoretical and experimental analysis of excessively tilted fiber gratings

Yan, Zhijun, Wang, Hushan, Wang, Changle, Sun, Zhongyuan, Yin, Guolu, Zhou, Kaiming, Wang, Yishan, Zhao, Wei and Zhang, Lin (2016). Theoretical and experimental analysis of excessively tilted fiber gratings. Optics Express, 24 (11), pp. 12107-12115.

Abstract

We have theoretically and experimentally investigated the dual-peak feature of tilted fiber gratings with excessively tilted structure (named as Ex-TFGs). We have explained the dual-peak feature by solving eigenvalue equations for TM0m and TE0m of a circular waveguide, in which the TE (transverse electric) and TM (transverse magnetic) core modes are coupled into TE and TM cladding modes, respectively. Meanwhile, in the experiment, we have verified that one of the dual peaks at the shorter wavelength is due to the TM mode coupling whereas the other one at the longer wavelength arises from TE mode coupling when a linearly polarized light launched into the Ex-TFG. We have also investigated the peak separation of TE and TM cladding mode for different surrounding medium refractive indexes (SRI), revealed that the dual peaks separation is decreasing as increasing of SRI, which agrees very well with the theoretical analysis results.

Publication DOI: https://doi.org/10.1364/OE.24.012107
Divisions: Engineering & Applied Sciences > Institute of Photonics
Engineering & Applied Sciences > Electrical, electronic & power engineering
Additional Information: ©2016 Optical Society of America
Uncontrolled Keywords: Atomic and Molecular Physics, and Optics
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Related URLs: http://www.scopus.com/inward/record.url?scp=84973615684&partnerID=8YFLogxK (Scopus URL)
Published Date: 2016-05-30
Authors: Yan, Zhijun
Wang, Hushan
Wang, Changle
Sun, Zhongyuan
Yin, Guolu
Zhou, Kaiming ( 0000-0002-6011-1912)
Wang, Yishan
Zhao, Wei
Zhang, Lin ( 0000-0002-1691-5577)

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