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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 43, Iss. 10 — Apr. 1, 2004
  • pp: 2039–2045

All-fiber-optic infrared multispectral radiometer for measurements of temperature and emissivity of graybodies at near-room temperature

Igor Uman, Sharon Sade, Veena Gopal, James A. Harrington, and Abraham Katzir  »View Author Affiliations


Applied Optics, Vol. 43, Issue 10, pp. 2039-2045 (2004)
http://dx.doi.org/10.1364/AO.43.002039


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Abstract

An all-fiber-optic infrared multispectral radiometer for measurements of temperature and emissivity of graybodies at near-room temperature was constructed. Different spectral regions in the radiometer were obtained by use of hollow glass waveguides (HGWs) as filters. Using HGWs instead of bulk filters was advantageous because each HGW can be used as two different spectral filters when a dual-band IR detector is used. In addition, HGWs are much cheaper than the bulk IR filters that are usually used in such applications. For one graybody with a mean emissivity of 0.71, the estimated mean errors obtained for sample temperature, ambient temperature, and sample emissivity for all measured temperatures were 0.50% (∼1.65 K), 0.48% (∼1.4 K), and 7.3% (∼0.052) respectively. For a second graybody with a mean emissivity of 0.8 the estimated mean errors were 0.35% (∼1.2 K), 0.48% (∼1.4 K), and 5.0% (∼0.04), respectively.

© 2004 Optical Society of America

OCIS Codes
(060.2390) Fiber optics and optical communications : Fiber optics, infrared
(120.2440) Instrumentation, measurement, and metrology : Filters
(120.5630) Instrumentation, measurement, and metrology : Radiometry
(120.6780) Instrumentation, measurement, and metrology : Temperature
(230.7370) Optical devices : Waveguides
(350.2460) Other areas of optics : Filters, interference

History
Original Manuscript: October 12, 2003
Revised Manuscript: January 5, 2004
Published: April 1, 2004

Citation
Igor Uman, Sharon Sade, Veena Gopal, James A. Harrington, and Abraham Katzir, "All-fiber-optic infrared multispectral radiometer for measurements of temperature and emissivity of graybodies at near-room temperature," Appl. Opt. 43, 2039-2045 (2004)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-43-10-2039

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