Optical feedback in vertical-cavity surface-emitting lasers

A. Hsu, J. F.P. Seurin, S. L. Chuang, K. D. Choquette

Research output: Contribution to journalArticlepeer-review

Abstract

Optical feedback in a vertical-cavity surface-emitting laser due to a fiber facet of varying position is studied in experiment and theory. Measured spectra and light-current curves show periodic variations in resonant wavelength, threshold current, differential quantum efficiency, and output power as a function of fiber position. Theoretical results were obtained using a 2 × 2 vector propagation matrix method which models the laser and fiber in a single structure and shows good agreement with experimental results. A novel method for determining the linewidth enhancement factor α by analyzing the wavelength variation as a function of fiber position is presented and a value of α = 2.8 was obtained.

Original languageEnglish (US)
Pages (from-to)1643-1649
Number of pages7
JournalIEEE Journal of Quantum Electronics
Volume37
Issue number12
DOIs
StatePublished - Dec 2001

Keywords

  • Linewidth enhancement factor
  • Optical feedback
  • Optical fiber
  • Vertical-cavity surface-emitting laser

ASJC Scopus subject areas

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

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