Temperature-induced effect on refractive index of graphene based on coated in-fiber Mach-Zehnder interferometer

The temperature-induced complex refractive index（CRI） effect of graphene is demonstrated theoretically and experimentally based on a graphene coated in-fiber MZI（Mach-Zehnder interferometer）. The relationships between real and imaginary parts of the graphene CRI and temperature are obtained through...

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Bibliographic Details
Published inChinese physics B Vol. 26; no. 11; pp. 414 - 419
Main Author 李丽君;宫顺顺;刘仪琳;徐琳;李文宪;马茜;丁小哲;郭晓丽
Format Journal Article
LanguageEnglish
Published 01.11.2017
Subjects
CRI
光纤
干涉仪
折射指数
折射率
温度诱导
石墨
马赫
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ISSN1674-1056
2058-3834
DOI10.1088/1674-1056/26/11/116504

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Summary:The temperature-induced complex refractive index（CRI） effect of graphene is demonstrated theoretically and experimentally based on a graphene coated in-fiber MZI（Mach-Zehnder interferometer）. The relationships between real and imaginary parts of the graphene CRI and temperature are obtained through investigating the dip wavelength and intensity of the MZI interference spectrum changing with temperature, respectively. The temperature effect of CRI of the graphene is also analyzed theoretically. Both experimental and theoretical studies show that the real part and imaginary part of the CRI nonlinearly decrease and increase with temperature increasing, respectively. This graphene-coated in-fiber MZI structure also possesses the advantages of easy fabrication, miniaturization, low cost and robustness. It has potential applications in nanomaterial-based optic devices for communication and sensing.
Bibliography:Li-Jun Li1,2,3, Shun-Shun Gong1, Yi-Lin Liu1, Lin Xu1, Wen-Xian Li1, Qian Ma3, Xiao-Zhe Ding1, Xiao-Li Guo1（ 1 College of Electronics, Communication and Physics, Shandong University of Science and Technology, Qingdao 266590, China; 2 State Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao 266590, China ; 3 College of Electrical Engmeenng and Automation, Shandong Umversity of Science and Technology, Qingdao 266590, China）
11-5639/O4
in-fiber Mach-Zehnder interferometer graphene temperature-induced complex refractive index
The temperature-induced complex refractive index（CRI） effect of graphene is demonstrated theoretically and experimentally based on a graphene coated in-fiber MZI（Mach-Zehnder interferometer）. The relationships between real and imaginary parts of the graphene CRI and temperature are obtained through investigating the dip wavelength and intensity of the MZI interference spectrum changing with temperature, respectively. The temperature effect of CRI of the graphene is also analyzed theoretically. Both experimental and theoretical studies show that the real part and imaginary part of the CRI nonlinearly decrease and increase with temperature increasing, respectively. This graphene-coated in-fiber MZI structure also possesses the advantages of easy fabrication, miniaturization, low cost and robustness. It has potential applications in nanomaterial-based optic devices for communication and sensing.
ISSN:1674-1056
2058-3834
DOI:10.1088/1674-1056/26/11/116504