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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 43, Iss. 10 — Apr. 1, 2004
  • pp: 2071–2078

Detection performance of a diffusive wave phased array

Stephen P. Morgan  »View Author Affiliations


Applied Optics, Vol. 43, Issue 10, pp. 2071-2078 (2004)
http://dx.doi.org/10.1364/AO.43.002071


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Abstract

Diffusive wave phased arrays have been demonstrated to be a sensitive method of detecting inhomogeneities embedded in heavily scattering media. However, the increase in sensitivity is coupled with an increase in noise, so that the optimum performance may not be obtained when the sources are modulated in antiphase. The performance of a range of configurations in the presence of Gaussian noise is investigated by using probabilistic detection theory. A model of diffusive wave propagation through scattering media is used to demonstrate that the phase performance can be improved by controlling the relative phase difference between the two sources. However, the best performance is obtained by using the amplitude response of a single source system. The major benefit of a phased array system is therefore the rejection of common systematic noise.

© 2004 Optical Society of America

OCIS Codes
(170.0170) Medical optics and biotechnology : Medical optics and biotechnology
(170.3890) Medical optics and biotechnology : Medical optics instrumentation
(170.5280) Medical optics and biotechnology : Photon migration

History
Original Manuscript: July 2, 2003
Revised Manuscript: December 2, 2003
Published: April 1, 2004

Citation
Stephen P. Morgan, "Detection performance of a diffusive wave phased array," Appl. Opt. 43, 2071-2078 (2004)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-43-10-2071

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