Highly Sensitive Photodetector Using Ultra-High-Density 1.5-μm Quantum Dots for Advanced Optical Fiber Communications

Toshimasa Umezawa, Kouichi Akahane, Naokatsu Yamamoto, Atsushi Kanno, Tetsuya Kawanishi

研究成果: Article査読

9 被引用数 (Scopus)

抄録

We have fabricated a high-density 1.5-μm quantum dot photodetector for advanced optical fiber communications and have found unique optical properties, including avalanche multiplication. The structure of the absorption layer had stacked InAs/InGaAlAs layers with a high density of 1 × 1012 cm-2, which consisted of strained 1.5-μm InAs quantum dots and a strain compensation layer of InGaAlAs. A three times larger absorption coefficient than the InGaAs layer, an avalanche multiplication effect, and a low dark current are reported with InAs quantum dot conditions.

本文言語English
論文番号6808407
ジャーナルIEEE Journal on Selected Topics in Quantum Electronics
20
6
DOI
出版ステータスPublished - 2014 11 1
外部発表はい

ASJC Scopus subject areas

  • 電子工学および電気工学
  • 原子分子物理学および光学

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