Accession Number : ADD013358

Title :   Fiber Optic Pyrometry with Large Dynamic Range.

Descriptive Note : Patent, Filed 8 Aug 85, patented 14 Jul 87,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON DC

Personal Author(s) : Ganguly, Biswa ; Goss, Larry P ; Roquemore, William M ; Trump, Darryl D

Report Date : 14 Jul 1987

Pagination or Media Count : 11

Abstract : This patent discloses fiber optic probe apparatus usable for measuring temperatures with increased dynamic range and frequency domain response and desirable measurement accuracy. A black body signal source, fiber optic signal coupling, and extension of the transducer dynamic range with optical multiplexing are employed; the instrument operates in the range of 1.6 micrometers of optical energy wavelength and preferably employs recently improved indium gallium arsenide photodiode transducer devices and transducer frequency domain compensation. Use of the instrument in measuring combustion flame transient temperatures is disclosed.

Descriptors :   *FIBER OPTICS, *MEASUREMENT, *MULTIPLEXING, *OPTICAL COMMUNICATIONS, *PYROMETERS, *TRANSDUCERS, *PATENTS, ACCURACY, BLACKBODY RADIATION, COMPENSATION, COUPLING(INTERACTION), DYNAMIC RANGE, ENERGY, FREQUENCY, FREQUENCY RESPONSE, OPTICAL PROPERTIES, SIGNALS, SOURCES, TEMPERATURE

Subject Categories : Test Facilities, Equipment and Methods
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE