What is it about?

We demonstrate an intelligent fiber-integrated near-infrared (NIR) light field sensor based on upconversion nanoparticles (UCNPs) and tapered multimode fiber. The spectra-polarization-dependent upconverted speckled patterns captured by a cost-effective visible image sensor can be accurately decoded via a deep neural network.

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Why is it important?

By leveraging the upconversion nanoparticles, we show that the short-wave-infrared (SWI) light with high-dimension properties can be efficiently detected and processed using a cost-effective CMOS image sensor and deep learning.

Perspectives

The developed intelligent optical sensors provide a new design paradigm for fiber-integrated multi-dimensional NIR light field detection and can be applied in fiber-optic sensors and communications networks.

Jin-hui Chen
Xiamen University

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This page is a summary of: Intelligent Optical Fiber‐Integrated Near‐Infrared Polarimeter Based on Upconversion Nanoparticles, Advanced Optical Materials, August 2023, Wiley,
DOI: 10.1002/adom.202301259.
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