Observation of pulse compression in photonic crystal coupled cavity waveguides

T. J. Karle, Y. J. Chai, C. N. Morgan, I. H. White, T. F. Krauss

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Abstract

We demonstrate the compression of picosecond pulses using the large group velocity dispersion available from planar photonic crystal (PhC) coupled cavity waveguides (CCWs). A maximum pulsewidth reduction of 40%, from 1.91 to 1.17 ps, is achieved, in transmission through an 8-μm-long planar PhC waveguide; The equivalent dispersion value is >106 times larger than that available from standard single-mode fiber, at the pulse center wavelength of 1536 nm. The device performance is analyzed with the aid of both two-dimensional (2-D) eigenmode expansion and 2-D finite-difference time-domain (FDTD) models. The models included the material dispersion of the GaAs/AlGaAs heterostructure, into which the PhCs are etched, and show remarkable agreement with experiment.

Original languageEnglish
Pages (from-to)514-519
Number of pages6
JournalJournal of Lightwave Technology
Volume22
Issue number2
DOIs
Publication statusPublished - 1 Feb 2004

Funding

Manuscript received May 19, 2003; revised October 22, 2003. This work was supported by the ESPRC through the Ultrafast Photonics Collaboration (UPC) and the Nanoelectronics Research Centre, University of Glasgow. The work of T. J. Karle is supported by a CASE award from Agilent Technologies.

Keywords

  • Band-gap structures
  • Fabrication
  • Optical planar waveguides
  • Optical pulse compression

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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