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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Vol. 19, Iss. 11 — Nov. 1, 2002
  • pp: 2223–2228

Experimental study of the phenomenon of 1 × N spectral switch due to diffraction of partially coherent light

Suman Anand, B. K. Yadav, and H. C. Kandpal  »View Author Affiliations


JOSA A, Vol. 19, Issue 11, pp. 2223-2228 (2002)
http://dx.doi.org/10.1364/JOSAA.19.002223


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Abstract

Spectral properties of a class of partially coherent light with spectral profiles of varying bandwidths are studied on diffraction by a circular aperture in the far zone for different diffractive angles, i.e., for on-axis and off-axis points on the observation plane. It is found that the spectrum of the light in the far zone is different from that at the aperture plane. This change in the spectrum is termed spectral shift, which is found to be different at different diffractive angles. The spectral shift for a fixed diffactive angle shows a gradual change. However, for a critical value of the coherence at the aperture plane, the spectral shift shows a rapid transition, termed spectral switch. For different diffractive angles the coherence that causes the spectral switch also differs. Therefore the phenomenon of 1×N spectral switch (consisting of one input port and N output ports) is studied experimentally.

© 2002 Optical Society of America

OCIS Codes
(030.1640) Coherence and statistical optics : Coherence
(230.6080) Optical devices : Sources
(260.1960) Physical optics : Diffraction theory
(260.2030) Physical optics : Dispersion

Citation
Suman Anand, B. K. Yadav, and H. C. Kandpal, "Experimental study of the phenomenon of 1 × N spectral switch due to diffraction of partially coherent light," J. Opt. Soc. Am. A 19, 2223-2228 (2002)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-19-11-2223

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