Heterogeneous all-solid multicore fiber based multipath Michelson interferometer for high temperature sensing

被引：58
作者：
Duan, Li [1 ,2 ]
Zhang, Peng [1 ,2 ]
Tang, Ming [1 ,2 ]
Wang, Ruoxu [1 ,2 ]
Zhao, Zhiyong [1 ,2 ]
Fu, Songnian [1 ,2 ]
Gan, Lin [1 ,2 ]
Zhu, Benpeng [1 ,2 ]
Tong, Weijun [3 ]
Liu, Deming [1 ,2 ]
Shum, Perry Ping [4 ]
机构：
[1] Huazhong Univ Sci & Technol, Sch Opt & Elect Informat, WNLO, Wuhan 430074, Peoples R China
[2] Huazhong Univ Sci & Technol, Sch Opt & Elect Informat, Natl Engn Lab Next Generat Internet Access Syst, Wuhan 430074, Peoples R China
[3] Yangtze Opt Fiber & Cable Joint Stock Ltd Co YOFC, R&D Ctr, State Key Lab Opt Fiber & Cable Manufacture Techn, Wuhan 430073, Peoples R China
[4] Nanyang Technol Univ, Sch Elect & Elect Engn, Photon Ctr Excellence, Singapore 637553, Singapore
来源：
OPTICS EXPRESS | 2016年 / 24卷 / 18期
基金：
中国国家自然科学基金;
关键词：
SENSOR;
D O I：
10.1364/OE.24.020210
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A compact high temperature sensor utilizing a multipath Michelson interferometer (MI) structure based on weak coupling multicore fiber (MCF) is proposed and experimentally demonstrated. The device is fabricated by program-controlled tapering the spliced region between single mode fiber (SMF) and a segment of MCF. After that, a spherical reflective structure is formed by arc-fusion splicing the end face of MCF. Theoretical analysis has been implemented for this specific multipath MI structure; beam propagation method based simulation and corresponding experiments were performed to investigate the effect of taper and spherical end face on system's performance. Benefiting from the multipath interferences and heterogeneous structure between the center core and surrounding cores of the all-solid MCF, an enhanced temperature sensitivity of 165 pm/degrees C up to 900 degrees C and a high-quality interference spectrum with 25 dB fringe visibility were achieved.(C) 2016 Optical Society of America
引用
收藏
页码：20210 / 20218
页数：9
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