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Proceedings Paper

Characteristics of in-fiber Mach-Zehnder interferometer formed by lateral offset splicing
Author(s): Xiujuan Yu; Ge Li; Shengchun Liu; Jintao Zhang; Xuefeng Chen; Liying Zhang; Yanbiao Liao
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Paper Abstract

We present an in-fiber Mach-Zehnder type interferometer (MZI) in single mode fiber based on lateral offset splicing technique. The MZI relies on the interference between the fundamental core mode and a co-propagating cladding mode. To build an in-fiber MZI, we need one element or device which excites two co-propagating modes and another one to recombine them. In our case, the excitation and recombination of modes is realized by two cascaded lateral offset splicing joints. The effects of the lateral offset amount, the interferometer cavity length, and the fusion splicing parameters on the property and performance of the in-fiber MZI were investigated experimentally. By choosing an appropriate lateral offset amount, the MZIs with good interference fringe contrast and low insertion loss can be fabricated. Several in-fiber MZIs with different interferometer lengths were built and it is found that the interference peak wavelength spacing is inversely proportional to the interferometer length L. The potential applications of the proposed in-fiber MZI were further investigated as strain sensors.

Paper Details

Date Published: 30 November 2012
PDF: 8 pages
Proc. SPIE 8561, Advanced Sensor Systems and Applications V, 85611P (30 November 2012); doi: 10.1117/12.981889
Show Author Affiliations
Xiujuan Yu, Heilongjiang Univ. (China)
Ge Li, Heilongjiang Univ. (China)
Shengchun Liu, Heilongjiang Univ. (China)
Jintao Zhang, Heilongjiang Univ. (China)
Xuefeng Chen, Heilongjiang Univ. (China)
Liying Zhang, Heilongjiang Univ. (China)
Yanbiao Liao, Tsinghua Univ. (China)

Published in SPIE Proceedings Vol. 8561:
Advanced Sensor Systems and Applications V
Brian Culshaw; Yanbiao Liao; Anbo Wang; Xiaoyi Bao; Xudong Fan, Editor(s)

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