Modelling of Chirped Pulse Propagation Through a Mini-Stop Band in a 2D Photonic Crystal Waveguide

T. Cao, Martin J. Cryan, Pavel S. Ivanov, Daniel Ho, Bob Ren, Ian James Craddock, Judy M. Rorison, Chris J. Railton

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

The finite-difference time-domain (FDTD) and frequency-domain finite-element (FE) methods are used to study chirped pulse propagation in 2D photonic crystal (PhC) waveguides. Chirped pulse FDTD has been implemented, which allows the study of pulse propagation in a direct way. The carrier wavelength of the pulse is swept across the bandwidth of a mini-stop-band (MSB) feature, and pulse compression behavior is observed. Both round-hole and square-hole PhC waveguides are studied, with the latter giving increased pulse compression. A group-delay analysis is then used to understand the compression behavior, and this shows how the fast-light regime that occurs within the MSB plays an important role in the observed pulse compression.
Original languageEnglish
Pages (from-to)1575-1583
Number of pages9
JournalJournal of the Optical Society of America B: Optical Physics (JOSA B)
Volume24
Issue number7
Early online date15 Jun 2007
DOIs
Publication statusPublished - 1 Jul 2007
Externally publishedYes

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