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17 March 2023 Electrical sensing using a fiber-tip metasurface
Luca Picelli, René van Veldhoven, Ewold Verhagen, Andrea Fiore
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Proceedings Volume PC12432, High Contrast Metastructures XII; PC124320T (2023) https://doi.org/10.1117/12.2648886
Event: SPIE OPTO, 2023, San Francisco, California, United States
Abstract
We demonstrate a novel paradigm for fiber sensing, based on the combination of an electrical sensor and a fiber-tip electro-optic metasurface. We transfer a semiconductor photodiode on the tip of an optical fiber and measure its current-voltage characteristics using an electro-optic photonic crystal. Any change in the electrical characteristics due to the environment can then be sensed via the fiber, greatly extending the application scope of fiber sensors. As a proof of principle, we demonstrate cryogenic temperature sensing.
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Luca Picelli, René van Veldhoven, Ewold Verhagen, and Andrea Fiore "Electrical sensing using a fiber-tip metasurface", Proc. SPIE PC12432, High Contrast Metastructures XII, PC124320T (17 March 2023); https://doi.org/10.1117/12.2648886
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KEYWORDS
Diodes
Refractive index
Sensors
Microelectromechanical systems
Photodiodes
Photonic crystals
Reflectivity
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