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Journal of the Optical Society of America B

Journal of the Optical Society of America B


  • Editor: Henry van Driel
  • Vol. 29, Iss. 6 — Jun. 1, 2012
  • pp: 1172–1178

Dispersion-accumulated diffraction-compensated superprism with two cascaded photonic crystals

Eric Cassan and Marco Casale  »View Author Affiliations

JOSA B, Vol. 29, Issue 6, pp. 1172-1178 (2012)

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The benefits of unusual dispersive properties of photonic crystals are often mitigated by unwanted phenomena like spatial broadening of propagating beams. This problem is usually faced using millimeter long conditioning regions to precompensate for beam spreading. A new approach is explored here to manage the strong diffraction of photonic superprisms without preconditioning regions. Unconventional photonic crystal lattice cells are engineered using plane wave expansion calculations, and two photonic crystals having both positive dispersions but diffraction properties of opposite signs are selected. Light propagation in the combined photonic structure is studied using finite difference time domain simulation to validate the predicted dispersion accumulation and diffraction compensation approach.

© 2012 Optical Society of America

OCIS Codes
(230.7390) Optical devices : Waveguides, planar
(160.5298) Materials : Photonic crystals

ToC Category:
Integrated Optics

Original Manuscript: September 15, 2011
Revised Manuscript: January 9, 2012
Manuscript Accepted: February 2, 2012
Published: May 9, 2012

Eric Cassan and Marco Casale, "Dispersion-accumulated diffraction-compensated superprism with two cascaded photonic crystals," J. Opt. Soc. Am. B 29, 1172-1178 (2012)

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