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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 19 — Sep. 12, 2011
  • pp: 18410–18422

Energy-bandwidth trade-off in all-optical photonic crystal microcavity switches

Mikkel Heuck, Philip Trøst Kristensen, and Jesper Mørk  »View Author Affiliations

Optics Express, Vol. 19, Issue 19, pp. 18410-18422 (2011)

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The performance of all-optical switches is a compromise between the achievable bandwidth of the switched signal and the energy requirement of the switching operation. In this work we consider a system consisting of a photonic crystal cavity coupled to two input and two output waveguides. As a specific example of a switching application, we investigate the demultiplexing of an optical time division multiplexed signal. To quantify the energy-bandwidth trade-off, we introduce a figure of merit for the detection of the demultiplexed signal. In such investigations it is crucial to consider patterning effects, which occur on time scales that are longer than the bit period. Our analysis is based on a coupled mode theory, which allows for an extensive investigation of the influence of the system parameters on the switching dynamics. The analysis is shown to provide new insights into the ultrafast dynamics of the switching operation, and the results show optimum parameter ranges that may serve as design guidelines in device fabrication.

© 2011 OSA

OCIS Codes
(200.4560) Optics in computing : Optical data processing
(160.5298) Materials : Photonic crystals

ToC Category:
Photonic Crystals

Original Manuscript: July 1, 2011
Revised Manuscript: August 8, 2011
Manuscript Accepted: August 22, 2011
Published: September 6, 2011

Mikkel Heuck, Philip Trøst Kristensen, and Jesper Mørk, "Energy-bandwidth trade-off in all-optical photonic crystal microcavity switches," Opt. Express 19, 18410-18422 (2011)

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