Nonlinear switching and pulse propagation in phase-shifted cubic quintic grating

Y. Yosia, Shum Ping, Chao Lu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

8 Citations (Scopus)


We investigate numerically the nonlinear switching characteristics and pulse propagarion behavior in the phase-shifted cubic quintic grating (CQG). The continuous-wave nonlinear switching curve shows an interesting feature whereby two switching thresholds and consequently double bistability hysteresis are formed in a certain detuning window. We show the unique bistability (U-bistability) region close to the upper-switching threshold in each of the hysteresis, where the high state in U-bistability can be reached when input is coming from low to high with fast rise time. For medium peak intensity Gaussian pulse propagation in phase-shifted CQG, the full-width at half-maximum of the output pulse varies in upward parabolic manner as the peak intensity increases, whereas for high peak intensity Gaussian pulse propagation, the output pulse will experience distortion from the Gaussian shape because of the compression in its leading edge and broadening in its trailing edge concurrently.
Original languageEnglish
Pages (from-to)2670-2672
Number of pages3
JournalIEEE Photonics Technology Letters
Issue number12
Publication statusPublished - 1 Dec 2005
Externally publishedYes


  • Cubic quintic grating (CQG)
  • Nonlinear optics
  • Nonlinear switching
  • Optical bistability
  • Pulse propagation

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

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