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Updated: Feb 14, 2026

Fiber Optic Distributed Sensors for High-resolution Temperature Field Mapping
Published on: November 7, 2016
Fiber-Optic Pyrometer with Optically Powered Switch for Temperature Measurements
Carmen Vázquez1, Sandra Pérez-Prieto2, Juan D López-Cardona3
1Electronics Technology Department, University Carlos III of Madrid, 28911 Leganés, Spain. cvazquez@ing.uc3m.es.
Abstract:
We report the experimental results on a new infrared fiber-optic pyrometer for very localized and high-speed temperature measurements ranging from 170 to 530 °C using low-noise photodetectors and high-gain transimpedance amplifiers with a single gain mode in the whole temperature range. We also report a shutter based on an optical fiber switch which is optically powered to provide a reference signal in an optical fiber pyrometer measuring from 200 to 550 °C. The tests show the potential of remotely powering via optical means a 300 mW power-hungry optical switch at a distance of 100 m, avoiding any electromagnetic interference close to the measuring point.
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