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Directional torsion and temperature discrimination based on a multicore fiber with a helical structure

Zhang, Hailiang; Wu, Zhifang; Shum, Perry Ping; Shao, Xuguang; Wang, Ruoxu; Dinh, Xuan Quyen; Fu, Songnian; Tong, Weijun; Tang, Ming (2018)

We propose and experimentally demonstrate a directional torsion sensor based on a Mach-Zehnder interferometer formed in a multicore fiber (MCF) with a ~570-μm-long helical structure (HS). The HS was fabricated into the MCF ...