In-Fiber Mach-Zehnder Interferometer Based on Double Cladding Fibers for Refractive Index Sensor

被引：65

作者：

Pang, Fufei ^{[1
]}

Liu, Huanhuan ^{[1
]}

Guo, Hairun ^{[1
]}

Liu, Yunqi ^{[1
]}

Zeng, Xianglong ^{[1
]}

Chen, Na ^{[1
]}

Chen, Zhenyi ^{[1
]}

Wang, Tingyun ^{[1
]}

机构：

[1] Shanghai Univ, Key Lab Specialty Fiber Opt & Opt Access Networks, Shanghai 200444, Peoples R China

来源：

IEEE SENSORS JOURNAL | 2011年 / 11卷 / 10期

关键词：

Cladding-mode resonance; in-fiber Mach-Zehnder interferometer; refractive index sensor; PHOTONIC CRYSTAL FIBER; OPTICAL-FIBER; PERIOD; GRATINGS; RESONANCE; PAIR;

D O I：

10.1109/JSEN.2011.2123885

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

An in-fiber Mach-Zehnder interferometer (MZI) was fabricated and characterized for solution refractive index (RI) sensors. The MZI consists of two cascade double cladding fibers (DCFs) in a standard single mode fiber (SMF). The DCFs serve as the in-fiber couplers which split and combine light propagating in the core and the outer cladding region. Since the cladding mode is excited, the interference spectrum is sensitive to the ambient RI variation. Within the RI range from 1.3333 to 1.4535, the sensor characteristics were characterized. The sensitivity of 31 nm/RIU and 823 nm/RIU were obtained for the lower RI (1.34) and the higher RI (1.44), respectively. With the mass-producing of DCF and the easy fabrication process of the sensor head, the proposed in-fiber MZI is a potential alternative for the RI sensor application.

引用

页码：2395 / 2400

页数：6

共 22 条

[1] A high sensitivity refractometer based upon a long period grating Mach-Zehnder interferometer [J].