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Proceedings Paper

Controlling diffraction of optical beams using photonic crystals
Author(s): Babak Momeni; Ali Adibi
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Paper Abstract

We show that propagation of the envelope of the optical beams inside a periodic structure can be approximately modeled using a linear transformation solely based on its band structure. Using this model a simple description of the diffraction is obtained which relies on the shape of the equal-frequency contours of the photonic crystal band structure. This model provides intuitive insight on how to design these structures for diffraction-based applications. We consider various methods to modify the band structure, or to excite appropriate regions of the band structure to realize different functionalities inside the photonic crystal. Applications like diffraction-free propagation, frequency separation in space (superprism-based devices), and diffraction compensation are discussed in more detail.

Paper Details

Date Published: 9 July 2004
PDF: 9 pages
Proc. SPIE 5360, Photonic Crystal Materials and Devices II, (9 July 2004); doi: 10.1117/12.540556
Show Author Affiliations
Babak Momeni, Georgia Institute of Technology (United States)
Ali Adibi, Georgia Institute of Technology (United States)

Published in SPIE Proceedings Vol. 5360:
Photonic Crystal Materials and Devices II
Ali Adibi; Axel Scherer; Shawn-Yu Lin, Editor(s)

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