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Wavelength tuning in distributed feedback lasers by quantum well intermixing

  • City University of Hong Kong

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

We analyzed theoretically the wavelength tuning mechanisms in distributed feedback (DFB) lasers using quantum well intermixing. The main factor that limits the maximum tuning range is elucidated in the analysis. It is due to the increase in carrier density required to maintain the gain above the threshold after the bandgap is blue-shifted by intermixing. The effect of grating period is also investigated and shown to have strong effects. Changing the grating period can shift the maximum tuning range from 3.5 nm to 20 nm.

Original languageEnglish
Title of host publicationProceedings of the 6th Chinese Optoelectronics Symposium, COES 2003
EditorsK. T. Chan, H. S. Kwok
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages137-139
Number of pages3
ISBN (Electronic)0780378873, 9780780378872
DOIs
StatePublished - 2003
Externally publishedYes
Event6th Chinese Optoelectronics Symposium, COES 2003 - Hong Kong, China
Duration: 12 Sep 200314 Sep 2003

Publication series

NameProceedings of the 6th Chinese Optoelectronics Symposium, COES 2003

Conference

Conference6th Chinese Optoelectronics Symposium, COES 2003
Country/TerritoryChina
CityHong Kong
Period12/09/0314/09/03

Keywords

  • Distributed feedback devices
  • Gratings
  • Laser feedback
  • Laser theory
  • Laser tuning
  • Optical attenuators
  • Optical refraction
  • Photonic band gap
  • Quantum well lasers
  • Waveguide lasers

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