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Sensors 2016, 16(6), 856; doi:10.3390/s16060856

A Core-Offset Mach Zehnder Interferometer Based on A Non-Zero Dispersion-Shifted Fiber and Its Torsion Sensing Application

1
Departamento de Estudios Multidisciplinarios, División de Ingenierías, Universidad de Guanajuato, Av. Universidad s/n, Col. Yacatitas, Yuriría Gto. C.P. 38940, Mexico
2
Departamento de Ingeniería Electrónica, División de Ingenierías, Universidad de Guanajuato, Carretera Salamanca-Valle de Santiago km 3.5 + 1.8, Comunidad de Palo Blanco, Salamanca Gto. C.P. 36885, Mexico
3
Facultad de Ciencias Físico-Matemáticas, Universidad Autónoma de Nuevo León, Av. Universidad s/n, Cd. Universitaria, San Nicolas de los Garza Nuevo León C.P. 66455, Mexico
*
Author to whom correspondence should be addressed.
Academic Editors: Manuel Lopez-Amo, Jose Miguel Lopez-Higuera and Jose Luis Santos
Received: 5 April 2016 / Revised: 6 June 2016 / Accepted: 7 June 2016 / Published: 10 June 2016
(This article belongs to the Special Issue Optical Fiber Sensors 2016)
View Full-Text   |   Download PDF [3873 KB, uploaded 10 June 2016]   |  

Abstract

In this paper, an all-fiber Mach-Zehnder interferometer (MZI) based on a non-zero dispersion-shifted fiber (NZ-DSF) is presented. The MZI was implemented by core-offset fusion splicing one section of a NZ-DSF fiber between two pieces of single mode fibers (SMFs). Here, the NZ-DSF core and cladding were used as the arms of the MZI, while the core-offset sections acted as optical fiber couplers. Thus, a MZI interference spectrum with a fringe contrast (FC) of about 20 dB was observed. Moreover, its response spectrum was experimentally characterized to the torsion parameter and a sensitivity of 0.070 nm/° was achieved. Finally, these MZIs can be implemented in a compact size and low cost. View Full-Text
Keywords: Mach-Zehnder interferometer; fiber optics; fiber optic sensors; non-zero dispersion-shifted fiber Mach-Zehnder interferometer; fiber optics; fiber optic sensors; non-zero dispersion-shifted fiber
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Huerta-Mascotte, E.; Sierra-Hernandez, J.M.; Mata-Chavez, R.I.; Jauregui-Vazquez, D.; Castillo-Guzman, A.; Estudillo-Ayala, J.M.; Guzman-Chavez, A.D.; Rojas-Laguna, R. A Core-Offset Mach Zehnder Interferometer Based on A Non-Zero Dispersion-Shifted Fiber and Its Torsion Sensing Application. Sensors 2016, 16, 856.

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