Observation of gain-coupled distributed-feedback effects in V-groove InGaAs/AlGaAs quantum-wire arrays

Tae Geun Kim, Yasuhide Tsuji, Mutsuo Ogura

Research output: Contribution to journalArticle


InGaAs/AlGaAs V-groove quantum-wire (QWR) arrays were fabricated by holographic lithography and one-time metalorganic chemical vapour deposition (MOCVD) to evaluate gain-coupled distributed-feedback (GC-DFB) effects in the InGaAs/AlGaAs materials. Using a finite-element method (FEM), mode analysis of the actual cross-sectional structure verified the modal gain of the QWR DFB structure, in which the gain was identified by a single peak at the Bragg wavelength of the grating. In addition, we observed a large gain anisotropy due to the gain/loss coupling in the DFB structure at a wavelength of 914 nm in the emission spectra from the 430 nm pitch QWR grating at room temperature.

Original languageEnglish
Pages (from-to)758-762
Number of pages5
Issue number3
Publication statusPublished - 2006 Feb 14


ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Electrical and Electronic Engineering

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