Infrared fiber optics for thermometry in microwave

Katzir, A.; Bowman, F.; Asfour, Y.; Zur, A.; Valery, C. R.
November 1988
Applied Physics Letters;11/7/1988, Vol. 53 Issue 19, p1877
Academic Journal
Electromagnetic (microwave or radio frequency) field-induced heating is used in industrial, medical, and domestic applications. In most cases, efficient, rapid, and controllable heating is needed. A problem with this heating modality is the difficulty in gaining an accurate measurement of temperature in the presence of a strong electromagnetic field. A simple infrared fiber-radiometer system has been developed for thermometry in the presence of these strong electromagnetic fields. The radiometer was used to measure temperatures in the range 0–70 °C, with an accuracy of ±0.5 °C. The signal obtained varied almost linearly with temperature.


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