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Applied Optics

Applied Optics


  • Vol. 11, Iss. 9 — Sep. 1, 1972
  • pp: 1946–1951

Anomalies of Dielectric-Coated Gratings

Vishwani D. Agrawal and Yuen T. Lo  »View Author Affiliations

Applied Optics, Vol. 11, Issue 9, pp. 1946-1951 (1972)

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Experimental results at millimeter wavelengths on dielectric-coated gratings are reported that show sharp anomalous dips in the transmission intensity for both P and S polarizations (i.e., incident electric field parallel and perpendicular to the slits, respectively). These dips almost disappear when either the dielectric is removed or the slits are randomly spaced. Next, a theory is developed for the gratings of finite extent and nonuniform spacings. Theoretical results, although approximate, agree remarkably well with the experiment.

© 1972 Optical Society of America

Original Manuscript: January 24, 1972
Published: September 1, 1972

Vishwani D. Agrawal and Yuen T. Lo, "Anomalies of Dielectric-Coated Gratings," Appl. Opt. 11, 1946-1951 (1972)

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  1. R. W. Wood, Proc. Phys. Soc. (London) 18, 396 (1902).
  2. For a comprehensive list of references and discussion, see A. A. Oliner, “Surface-Wave Effects and Blindness in Phased-Array Antennas,” Phased-Array Antenna Symposium (Polytechnic Institute of Brooklyn, Farmingdale, N. Y., 1970).
  3. E. V. Byron, J. Frank, IEEE Trans. Antennas Propagation AP-16, 496 (1968). [CrossRef]
  4. V. D. Agrawal, Y. T. Lo, IEEE Trans. Antennas Propagation AP-20, 288 (1972). [CrossRef]
  5. J. S. Yee, Proc. IEEE 49, 1837 (1961).
  6. R. A. Sigelmann, A. Ishimaru, IEEE Trans. Antennas Propagation AP-13, 354 (1965). [CrossRef]

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