Observation of pulse compression in photonic crystal coupled cavity waveguides

T Karle, YJ Chai, CN Morgan, IH White, Thomas Fraser Krauss

Research output: Contribution to journalArticlepeer-review

74 Citations (Scopus)


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-mum-long planar PhC waveguide. The equivalent dispersion value is >10(6) 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)514-419
Number of pages6
JournalJournal of Lightwave Technology
Publication statusPublished - Feb 2004


  • band-gap structures
  • fabrication
  • optical planar waveguides
  • optical pulse compression


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