90 Gbaud NRZ-DP-DQPSK modulation with full-ETDM technique using high-speed optical IQ modulator

Atsushi Kanno, Takahide Sakamoto, Akito Chiba, Masaaki Sudo, Kaoru Higuma, Junichiro Ichikawa, Tetsuya Kawanishi

Research output: Contribution to journalArticle

5 Citations (Scopus)


We demonstrate high baud-rate DQPSK modulation with full-ETDM technique using a novel high-speed optical IQ modulator consisting of a ridge-type optical waveguide structure on a thin LiNbO3 substrate. Our fabrication technique achieves a drastic extension of the modulator's bandwidth and a reduction of half-wave voltage. Demonstration of 90-Gbaud NRZ-DP-DQPSK signal generation with the modulator successfully achieved a bit rate of 360-Gb/s under full-ETDM configuration.

Original languageEnglish
Pages (from-to)1179-1186
Number of pages8
JournalIEICE Transactions on Electronics
Issue number7
Publication statusPublished - 2011 Jul



  • Electrically time-division multiplexing
  • Optical IQ modulator
  • Quadrature phase shift keying

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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