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Journal of the Optical Society of America A

Journal of the Optical Society of America A


  • Vol. 19, Iss. 7 — Jul. 1, 2002
  • pp: 1376–1382

Analyzing the power coupled between partially coherent waveguide fields in different states of coherence

Stafford Withington and Ghassan Yassin  »View Author Affiliations

JOSA A, Vol. 19, Issue 7, pp. 1376-1382 (2002)

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A procedure is described for calculating the power coupled between partially coherent waveguide fields that are in different states of coherence. The method becomes important when it is necessary to calculate the power transferred from a distributed source S to a distributed load L through a length of multimode metallic, or dielectric, waveguide. It is shown that if the correlations between the transverse components of the electric and magnetic fields of S and L are described by coherence matrices M and M, respectively, then the normalized average power coupled between them is η=Tr[MM]/Tr[M]Tr[M], where Tr denotes the trace. When the modal impedances are equal, this expression for the coupled power reduces to an equation derived in a previous paper [J. Opt. Soc. Am. A 18, 3061 (2001)], by use of thermodynamic arguments, for the power coupled between partially coherent free-space beams.

© 2002 Optical Society of America

OCIS Codes
(030.1640) Coherence and statistical optics : Coherence
(030.4070) Coherence and statistical optics : Modes
(030.6600) Coherence and statistical optics : Statistical optics
(040.1240) Detectors : Arrays
(040.1880) Detectors : Detection
(040.3060) Detectors : Infrared

Original Manuscript: December 6, 2001
Revised Manuscript: February 20, 2002
Manuscript Accepted: February 20, 2002
Published: July 1, 2002

Stafford Withington and Ghassan Yassin, "Analyzing the power coupled between partially coherent waveguide fields in different states of coherence," J. Opt. Soc. Am. A 19, 1376-1382 (2002)

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