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High Sensitivity Refractive Index Sensor Based on the Cascaded Long-Period Fiber Grating near the Dispersion Turning Point

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Abstract

We demonstrate the fabrication of refractive index sensor based on the cascaded long- period fiber grating near dispersion turning point. The measured refractive index sensitivity is up to 2095.9 nm/RIU in the RI range of 1.333-1.395.

© 2021 The Author(s)

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