Spectral Characteristics and Displacement Sensing of U-Shaped Single-Mode–Multimode–Single-Mode Fiber Structure
Chuan Tian,
Xuening Chen,
Yaqi Ren
et al.
Abstract:The U-shaped fiber configuration represents the elementary form of micro-displacement sensing, characterized by its exceptional freedom and flexibility. The study proposes the U-shaped bent single-mode–multimode–single-mode (SMS) fiber structure that integrates the multimode interference (MMI) effect for enhanced mode dispersion and the Mach–Zönder interference (MZI) effect for spectral sensitivity improvement. The transmission spectral properties of the U-shaped SMS fiber structure with a bent radius over 1 c… Show more
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