Abstract
This paper describes the development of a temperature sensor suitable for use in a pulse power system. Such systems generate large time-varying magnetic fields, which complicate instrumentation. A temperature-sensing system has been developed that can remotely capture information necessary to determine the temperature of a surface in the presence of a strong electromagnetic field. This sensor is based on an interferometer using a thin sapphire die coated with nickel and nickel oxide as the sensing element. A model was developed to predict the behavior of the sensor to determine the ideal layer thickness. With this system, temperature measurement has been demonstrated in the presence of a large time-varying magnetic field at a sampling rate of 1000 Hz over a range of 20 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">deg</sup> C to 350 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">deg</sup> C.
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