Monolithically integrated quantum dot optical modulator with Semiconductor optical amplifier for short-range optical communications

Naokatsu Yamamoto, Kouichi Akahane, Toshimasa Umezawa, Tetsuya Kawanishi

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

A monolithically integrated quantum dot (QD) optical gain modulator (OGM) with a QD semiconductor optical amplifier (SOA) was successfully developed. Broadband QD optical gain material was used to achieve Gbps-order high-speed optical data transmission, and an optical gain change as high as approximately 6-7 dB was obtained with a low OGM voltage of 2.0 V. Loss of optical power due to insertion of the device was also effectively compensated for by the SOA section. Furthermore, it was confirmed that the QD-OGM/SOA device helped achieve 6.0-Gbps error-free optical data transmission over a 2.0-km-long photonic crystal fiber. We also successfully demonstrated generation of Gbps-order, high-speed, and error-free optical signals in the >5.5-THz broadband optical frequency bandwidth larger than the C-band. These results suggest that the developed monolithically integrated QD-OGM/SOA device will be an advantageous and compact means of increasing the usable optical frequency channels for short-reach communications.

Original languageEnglish
Article number04DG01
JournalJapanese Journal of Applied Physics
Volume54
Issue number4
DOIs
Publication statusPublished - 2015 Apr 1
Externally publishedYes

Fingerprint

Optical gain
Semiconductor optical amplifiers
Light modulators
Optical communication
light amplifiers
Semiconductor quantum dots
optical communication
modulators
quantum dots
Modulators
data transmission
Data communication systems
high speed
broadband
Photonic crystal fibers
C band
insertion
communication
photonics
bandwidth

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

Cite this

Monolithically integrated quantum dot optical modulator with Semiconductor optical amplifier for short-range optical communications. / Yamamoto, Naokatsu; Akahane, Kouichi; Umezawa, Toshimasa; Kawanishi, Tetsuya.

In: Japanese Journal of Applied Physics, Vol. 54, No. 4, 04DG01, 01.04.2015.

Research output: Contribution to journalArticle

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