Abstract: A temperature-compensated refractive index (RI) sensor based on thinned strongly-coupled seven-core fiber (SC-SCF) supermode Bragg grating and interferometer is demonstrated. The SC-SCF ...

Abstract: Refractive index sensor based on cascaded multimode fiber - no-core fiber structure was proposed. The experimental result shows the sensitivity is 137.5 nm/RIU from 1.360-1.376.