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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Anthony J. Campillo
  • Vol. 30, Iss. 23 — Dec. 1, 2005
  • pp: 3156–3158

Compensating intermodal dispersion in photonic crystal directional couplers

Francisco Cuesta-Soto, Beatriz García-Baños, and Javier Martí  »View Author Affiliations


Optics Letters, Vol. 30, Issue 23, pp. 3156-3158 (2005)
http://dx.doi.org/10.1364/OL.30.003156


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Abstract

Intermodal dispersion between the supermodes of a directional coupler may induce undesirable pulse breakup in a sufficiently large device. When this happens the device will no longer exchange power between its arms, and the extinction ratio is completely canceled. It is shown that, by carefully designing the coupling area of the directional coupler, one may compensate for intermodal dispersion. The compensating device should accomplish three basic requirements: inverse intermodal dispersion, balanced coupling of each supermode, and maximum power transfer while preserving the sign of the slope of the coupling coefficient with frequency for multiplexing-demultiplexing applications. This structure is designed and optimized with a genetic algorithm.

© 2005 Optical Society of America

OCIS Codes
(130.3120) Integrated optics : Integrated optics devices
(230.3120) Optical devices : Integrated optics devices
(250.5300) Optoelectronics : Photonic integrated circuits

ToC Category:
Integrated Optics

Citation
Francisco Cuesta-Soto, Beatriz García-Baños, and Javier Martí, "Compensating intermodal dispersion in photonic crystal directional couplers," Opt. Lett. 30, 3156-3158 (2005)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-30-23-3156

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