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Applied Optics

Applied Optics


  • Vol. 43, Iss. 20 — Jul. 9, 2004
  • pp: 3967–3970

Characterization of single and double fiber-coupled diffusing spheres

Jung-Rae Park, William R. Donaldson, Robert Boni, and Roman Sobolewski  »View Author Affiliations

Applied Optics, Vol. 43, Issue 20, pp. 3967-3970 (2004)

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A fiber-optic sensor, consisting of an optical fiber with and without a 1.59-mm-diameter spherical ceramic tip, inserted into a 19-mm-diameter Spectralon sphere has been characterized. This sensor is evaluated as a large-area omnidirectional sensor. An optical transport measurement system that rotates the sphere about two axes has been designed. The system measured the UV transport efficiency at 351 nm of light impinging on the sphere with an f-6 cone angle. When a bare fiber was placed at the center of the target sphere, the detection sensitivity was biased in the forward direction. The peak of the sensitivity of the inverse integrating sphere shifted from front to back as the bare fiber was withdrawn from the sphere and the numerical aperture of the fiber viewed more of the scattering volume. The response function with respect to the angle of incidence of the dual sphere was much more uniform than that obtained with a bare fiber in the center of the sphere.

© 2004 Optical Society of America

OCIS Codes
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(120.1880) Instrumentation, measurement, and metrology : Detection
(120.5820) Instrumentation, measurement, and metrology : Scattering measurements

Original Manuscript: September 16, 2003
Revised Manuscript: April 23, 2004
Published: July 10, 2004

Jung-Rae Park, William R. Donaldson, Robert Boni, and Roman Sobolewski, "Characterization of single and double fiber-coupled diffusing spheres," Appl. Opt. 43, 3967-3970 (2004)

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