Low-cost plasmonic fiber probe and wireless interrogation for electric power equipment temperature sensing

Yang-Duan Su; Jordan Athas; Nageswara Lalam; Brandon Grainger; Paul Ohodnicki

doi:10.1117/12.2617139

27 May 2022 Low-cost plasmonic fiber probe and wireless interrogation for electric power equipment temperature sensing

Yang-Duan Su, Jordan Athas, Nageswara Lalam, Brandon Grainger, Paul Ohodnicki

Proceedings Volume 12105, Fiber Optic Sensors and Applications XVIII; 121050A (2022) https://doi.org/10.1117/12.2617139
Event: SPIE Defense + Commercial Sensing, 2022, Orlando, Florida, United States

Abstract

Nanocomposite thin-film coated fiber optic sensors can be a promising solution to real-time temperature monitoring of electrical assets and imminent failure detection owing to minimal electrical connections and immunity to electromagnetic interference. However, cost of optical interrogation hardware has been a major roadblock for commercialization of fiber optic sensors. Here, we present a novel and simplified design of a fiber optic temperature sensor based on localized surface plasmon resonance (LSPR) response, a low-cost photodiode transimpedance-amplifier (TIA) circuit and collimated LED for monitoring applications where the cost of deployment is a critical consideration. The TIA circuit is designed to capture temperature-induced optical transmission and reflection responses by photocurrent-converted voltage variations communicated through Serial Peripheral Interface (SPI) wireless communication protocols. Wirelessly interrogable optical fiber sensors can therefore be potentially integrated in a wide range of assets such as grid-scale energy storage and medium or high voltage electric power conversion systems. To further minimize system complexity as compared to transmissionbased sensors demonstrated previously, a major emphasis is on a new reflection-based fiber sensor probe. This is also simulated in an optical waveguide physics-based model with Au-incorporated dielectric matrix oxides deposited on the fiber tip. Preliminary results of modeling the temperature response using end-coated reflection fiber probes are discussed.

Conference Presentation

Citation Download Citation

Yang-Duan Su, Jordan Athas, Nageswara Lalam, Brandon Grainger, and Paul Ohodnicki "Low-cost plasmonic fiber probe and wireless interrogation for electric power equipment temperature sensing", Proc. SPIE 12105, Fiber Optic Sensors and Applications XVIII, 121050A (27 May 2022); https://doi.org/10.1117/12.2617139

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