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Temperature-independent high-speed distributed voltage measurement using intensiometric FBG interrogation

Fusiek, Grzegorz and Orr, Philip and Niewczas, Pawel (2015) Temperature-independent high-speed distributed voltage measurement using intensiometric FBG interrogation. In: 2015 IEEE International Instrumentation and Measurement Technology Conference (I2MTC), 2015-05-11 - 2015-05-14.

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Abstract

In this paper, we demonstrate through simulation a low - cost, high - speed optical voltage sensing system with a multiplexing capability. The scheme utilizes transducers based on a hybrid piezoelectric/ optical construction, whereby the optical power reflected from dual - peak fiber Bragg gratings is modulated in response to an excitation voltage and monitored by photodetection while remaining robust to fluctuations in optical power and temperature. A dedic ated solid - state interrogation system incorporating passive wavelength division multiplexing allows for high - speed measurement over the ac/dc voltage sensor array without the use of expensive components, such as tunable filters or lasers .