Time-domain large-signal investigation on nonlinear interactions between an optical pulse and semiconductor waveguides

Jacques W.D. Chi, Chao Lu, M. K. Rao

Research output: Journal article publicationJournal articleAcademic researchpeer-review

37 Citations (Scopus)


A time-domain large-signal model is developed to investigate nonlinear interactions between picosecond optical pulses and semiconductor active waveguide devices, including distributed-feedback and Fabry-Perot lasers, as well as optical amplifiers. The model predicts interesting phenomena such as transform-limited superluminal transmission and directional DFB amplification. The influence of electrical carrier dynamics and feedback from a Bragg grating and/or reflecting facets on output pulses are demonstrated. Moreover, it is found that the time delay of the reflected and transmitted pulses is strongly related to the Bragg grating parameters, as well as to carrier dynamics. As a consequence, careful attention should be paid when the notions of group refractive index and group velocity are to be used in device modeling.
Original languageEnglish
Pages (from-to)1329-1336
Number of pages8
JournalIEEE Journal of Quantum Electronics
Issue number10
Publication statusPublished - 1 Oct 2001
Externally publishedYes


  • Bragg grating
  • Pulse shaping
  • Semiconductor waveguides
  • Simulations
  • Ultrashort pulse

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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