Modulation effects in multi-section semiconductor lasers

Nicholas G. Usechak, Matt Grupen, Nader Naderi, Yan Li, Luke F. Lester, Vassilios Kovanis

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations (Scopus)


The current modulation of a two-section semiconductor laser is first reviewed analytically using a well-known, closed-form, modulation expression. A system of traveling-intensity equations is then used to investigate spatial effects in these lasers including cavity layout and the role played by cavity length. The numerical simulations verify the accuracy of the analytic expression for short cavities (low frequencies) but identify shortcomings as the cavity length (modulation frequency) is increased. One notable difference is the presence of resonant peaks in the modulation response. Although this effect has been addressed in the past, the arrangement of sections within the laser is shown to play a prominent role in these monolithic devices for what we believe to be the first time. In the course of this investigation the thirteen different ways a two-section semiconductor laser can be current modulated are identified and computationally investigated.

Original languageEnglish
Title of host publicationPhysics and Simulation of Optoelectronic Devices XIX
Publication statusPublished - May 13 2011
Externally publishedYes
EventPhysics and Simulation of Optoelectronic Devices XIX - San Francisco, CA, United States
Duration: Jan 24 2011Jan 27 2011

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X


OtherPhysics and Simulation of Optoelectronic Devices XIX
CountryUnited States
CitySan Francisco, CA


  • Multi-section semiconductor lasers
  • RF photonics
  • feedback-enhanced modulation
  • gain lever
  • laser modulation
  • resonant modulation

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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