Abstract

By exploiting the polarization-sensitive coupling effect of graphene with the optical mode, we investigate the polarization modulation properties of a hybrid waveguide of graphene-integrated excessively tilted fiber grating (Ex-TFG). The theoretical analysis and experimental results demonstrate that the real and imaginary parts of complex refractive index of few-layer graphene exhibit different effects on transverse electric (TE) and transverse magnetic (TM) cladding modes of the Ex-TFG, enabling stronger absorption in the TE mode and more wavelength shift in the TM mode. Furthermore, the surrounding refractive index can modulate the complex optical constant of graphene and then the polarization properties of the hybrid waveguide, such as resonant wavelength and peak intensity. Therefore, the unique polarization tuning property induced by the integration of the graphene layer with Ex-TFG may endow potential applications in all-in-one fiber modulators, fiber lasers, and biochemical sensors.

© 2016 Optical Society of America

Theoretical analysis of tuning property of the graphene integrated excessively tilted fiber grating for sensitivity enhancement

Zhihong Li, Zhuying Yu, Boteng Yan, Xiukai Ruan, Yaoju Zhang, and Yuxing Dai
J. Opt. Soc. Am. B 36(1) 108-118 (2019)

Theoretical and experimental analysis of excessively tilted fiber gratings

Zhijun Yan, Hushan Wang, Changle Wang, Zhongyuan Sun, Guolu Yin, Kaiming Zhou, Yishan Wang, Wei Zhao, and Lin Zhang
Opt. Express 24(11) 12107-12115 (2016)

Excessively tilted fiber grating-based vector magnetometer

Tean Lu, Yuezhen Sun, Yarien Moreno, Qizhen Sun, Kaiming Zhou, Hushan Wang, Zhijun Yan, Deming Liu, and Lin Zhang
Opt. Lett. 44(10) 2494-2497 (2019)

Graphene-coated tilted fiber-Bragg grating for enhanced sensing in low-refractive-index region

Biqiang Jiang, Xin Lu, Xuetao Gan, Mei Qi, Yadong Wang, Lei Han, Dong Mao, Wending Zhang, Zhaoyu Ren, and Jianlin Zhao
Opt. Lett. 40(17) 3994-3997 (2015)

Tuning the resonance of polarization-degenerate LP_1,l cladding mode in excessively tilted long period fiber grating for highly sensitive refractive index sensing

Zhihong Li, Jie Shen, Qiuping Ji, Xiukai Ruan, Yaoju Zhang, Yuxing Dai, and Zhennao Cai
J. Opt. Soc. Am. A 35(3) 397-405 (2018)