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

作     者：李丽君 宫顺顺 刘仪琳 徐琳 李文宪 马茜 丁小哲 郭晓丽 

作者机构：College of Electronics Communication and Physics Shandong University of Science and Technology State Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and TechnologyShandong University of Science and Technology College of Electrical Engineering and Automation Shandong University of Science and Technology 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2017年第26卷第11期

页      面：414-419页

核心收录：

学科分类：081702[工学-化学工艺] 08[工学] 0817[工学-化学工程与技术] 0803[工学-光学工程] 

基　　金：Project supported by the Shandong Provincial Natural Science Foundation of China(Grant Nos.ZR2009AM017 and ZR2013FM019) the National Postdoctoral Project of China(Grant Nos.200902574 and 20080441150) the Shandong Provincial Education Department Foundation of China(Grant No.J06P14) the Opening Foundation of State Key Lab of Minning Disaster Prevention and Control Co-founded by Shandong Province the Ministry of Science and Technology of China(Grant No.MDPC201602) 

主　　题：in fiber Mach Zehnder interferometer graphene temperature induced complex refractive index 

摘      要：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.