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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Anthony J. Campillo
  • Vol. 31, Iss. 6 — Mar. 15, 2006
  • pp: 742–744

Anomalous modal structure in a waveguide with a photonic crystal core

Xiaofang Yu, Wah Tung Lau, and Shanhui Fan  »View Author Affiliations


Optics Letters, Vol. 31, Issue 6, pp. 742-744 (2006)
http://dx.doi.org/10.1364/OL.31.000742


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Abstract

We analyze a dielectric waveguide with a photonic crystal core. Using constant frequency contour analysis, we show that the modal behavior of this structure is drastically different from that of a conventional slab waveguide. In particular, at a given frequency the lowest-order guided mode can have an odd symmetry or can have more than one nodal plane in its field distribution. Also, there exist several single-mode regions with a different modal profile in each region. Finally, a single-mode waveguide for the fundamental mode with a large core and strong confinement can be realized. All these behaviors are confirmed by our three-dimensional finite-difference time-domain simulations.

© 2006 Optical Society of America

OCIS Codes
(130.2790) Integrated optics : Guided waves
(160.3130) Materials : Integrated optics materials

ToC Category:
Integrated Optics

History
Original Manuscript: August 31, 2005
Revised Manuscript: November 11, 2005
Manuscript Accepted: November 17, 2005

Citation
Xiaofang Yu, Wah Tung Lau, and Shanhui Fan, "Anomalous modal structure in a waveguide with a photonic crystal core," Opt. Lett. 31, 742-744 (2006)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-31-6-742

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