A torsion experimental sensing setup based on a Mach-Zehnder interferometer (MZI) with photonics crystal fiber is presented. The MZI was fabricated by fusion splicing a piece of photonic crystal fiber (PCF) between two segments of a single-mode fiber (SMF). Here, a spectral MZI fringe shifting is induced by applying torsion over the SMF-PCF-SMF. As a result a torsion sensitivity of 35.79 pm/ and a high visibility of 10 dB were achieved. Finally, it is shown that the sensing arrangement is compact and robust.
Eliana I. Pacheco-Chacon, E. Gallegos-Arellano, Juan M. Sierra-Hernandez, Roberto Rojas-Laguna, Julian M. Estudillo-Ayala, Emmanuel Hernandez, D. Jauregui-Vazquez, and J. C. Hernandez-Garcia, "Torsion sensing setup based on a Mach-Zehnder interferometer with photonics crystal fiber," Proc. SPIE 10110, Photonic Instrumentation Engineering IV, 101100V (Presented at SPIE OPTO: February 02, 2017; Published: 20 February 2017); https://doi.org/10.1117/12.2251495.
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