Enhancement of the Modulation Dynamics of an Optically Injection-Locked Semiconductor Laser Using Gain Lever

Jean Maxime Sarraute, Kevin Schires, Sophie Larochelle, Frédéric Grillot

Research output: Contribution to journalArticlepeer-review

Abstract

The modulation response of an optically injected gain-lever semiconductor laser is studied for the first time using small-signal analysis of a rate equation model. Calculations show that a gain-lever laser operating under medium to strong optical injection provides a unique and robust configuration for ultralarge bandwidth enhancement. Modulation bandwidths above nine times the relaxation oscillation frequency of the free-running laser can be reached using injection-locking conditions that are reasonable for practical applications. This theoretical work is of prime importance for the development of directly modulated broadband optical sources for high-speed operation at 40 Gb/s and beyond.

Original languageEnglish
Article number07124456
Pages (from-to)575-582
Number of pages8
JournalIEEE Journal on Selected Topics in Quantum Electronics
Volume21
Issue number6
DOIs
Publication statusPublished - 1 Nov 2015
Externally publishedYes

Keywords

  • Semiconductor laser
  • bandwidth
  • gain lever
  • modulation response
  • optical injection

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