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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

  • Editor: Stephen A. Burns
  • Vol. 25, Iss. 6 — Jun. 1, 2008
  • pp: 1435–1443

Role of photonic bandgaps in polarization-independent grating waveguide structures

Eran Grinvald, Tsvi Katchalski, Silvia Soria, Shimon Levit, and Asher A. Friesem  »View Author Affiliations


JOSA A, Vol. 25, Issue 6, pp. 1435-1443 (2008)
http://dx.doi.org/10.1364/JOSAA.25.001435


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Abstract

Polarization independence in a one-dimensional resonant grating waveguide structure involves the simultaneous excitation of two guided modes propagating in different directions. Possible simultaneous excitations occur when the two excited guided modes have either the same polarization, i.e., TE–TE (transverse electric) or TM–TM (transverse magnetic), or different polarizations, i.e., TE–TM. Simultaneous excitations may result in bandgaps and singularities. We confirm and show that in order to achieve polarization independence, it is necessary to find the conditions that minimize the effects of such bandgaps and singularities and experimentally demonstrate tunable polarization independence for simultaneously excited TE–TM-guided modes.

© 2008 Optical Society of America

OCIS Codes
(230.3120) Optical devices : Integrated optics devices
(230.7400) Optical devices : Waveguides, slab
(350.4238) Other areas of optics : Nanophotonics and photonic crystals
(050.5745) Diffraction and gratings : Resonance domain

ToC Category:
Diffraction and Gratings

History
Original Manuscript: November 2, 2007
Revised Manuscript: April 6, 2008
Manuscript Accepted: April 8, 2008
Published: May 29, 2008

Citation
Eran Grinvald, Tsvi Katchalski, Silvia Soria, Shimon Levit, and Asher A. Friesem, "Role of photonic bandgaps in polarization-independent grating waveguide structures," J. Opt. Soc. Am. A 25, 1435-1443 (2008)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-25-6-1435

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