Analysis of heat radiation characteristics of the probe of a dichromatic high-temperature optical fiber sensor

Zeying Chi

doi:10.1117/12.2294820

1 July 1990 Analysis of heat radiation characteristics of the probe of a dichromatic high-temperature optical fiber sensor

Zeying Chi

Author Affiliations +

Proceedings Volume 1230, International Conference on Optoelectronic Science and Engineering '90; 123053 (1990) https://doi.org/10.1117/12.2294820
Event: The Marketplace for Industrial Lasers 1990, 1990, Chicago, IL, United States

Abstract

It was analyzed that the heat radiation characteristics of the probe of a dichromatic high-temperature opti- cal fiber sensor. The probe was made of sputtering Iridium(Ir) thin film on the end of a sapphire fiber forming a blackbody cavity. According to heat radiation characterisitics of a cylindrical cavity and characteristics of radia- tion, absorption and heat-transfer of a single crystal sapphire, the heat exchanges between the cylindrical Ir cavi- ty and sapphire fiber was neglected rationally. A theoretical model of the heat radiation of the probe, which con- sidered respectively radiation of cylindrical Ir cavity and radiation of sapphre fiber, was established. Then the analytical formula of measured object's temperature T was derived by two wavelengths/(21, 20 power ratio Q which was measured with dicromatic optical fiber pyrometer.

Citation Download Citation

Zeying Chi "Analysis of heat radiation characteristics of the probe of a dichromatic high-temperature optical fiber sensor", Proc. SPIE 1230, International Conference on Optoelectronic Science and Engineering '90, 123053 (1 July 1990); https://doi.org/10.1117/12.2294820

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