NDLI: All Single-Mode Fiber Mach–Zehnder Interferometer Based on Two Peanut-Shape Structures

Content Provider	IEEE Xplore Digital Library
Author	Di Wu Tao Zhu Kin Seng Chiang Ming Deng
Copyright Year	1983
Abstract	A peanut-shape fiber structure that can realize the coupling and recoupling between the fiber core mode and the cladding modes is proposed in this paper. Based on the structure, a simple and low-cost Mach-Zehnder interferometer (MZI) formed by cascading two peanut-shape structures in the single-mode fiber is demonstrated. The theory and the experimental results show that the first peanut-shape structure can couple the light energy of the core mode into the cladding modes and the second peanut-shape structure can recouple the light in the cladding modes into the core mode. A high-quality interference spectrum with a fringe visibility of about 13 dB is observed. Moreover, it has very good mechanical strength compared with the MZIs based on the tapers or the offset structures. When the interferometer length L = 22 mm, the temperature sensitivity of the device is ~ 46.8 pm/°C and the strain sensitivity is ~ 14 pm/με. Such kind of interferometer would find potential applications in communication and sensing fields.
Sponsorship	IEEE Lasers and Electro-Optics Society Optical Society of America
Starting Page	805
Ending Page	810
Page Count	6
File Size	877095
File Format	PDF
ISSN	07338724
Volume Number	30
Issue Number	5
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-03-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Optical fiber sensors Temperature sensors Optical fibers Strain Sensitivity Temperature measurement strain Coupling fiber optics sensors Mach–Zehnder interferometer (MZI) temperature
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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