120-GB/S NRZ-DQPSK signal generation by a thin-lithium-niobate-substrate modulator

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

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

23 Citations (Scopus)


A high-speed DQPSK optical modulator is fabricated with a thin lithium niobate substrate. Decrease in the propagation loss of electrodes and a low half-wave voltage, which can be realized by fabrication of a ridge-type optical waveguide structure, can help achieve 120-Gb/s (60-Gbaud) NRZ-DQPSK modulation with full electricaltime-division-multiplexing technique.

Original languageEnglish
Pages (from-to)817-822
Number of pages6
Journalieice electronics express
Issue number11
Publication statusPublished - 2010 Jun 10
Externally publishedYes


  • Linbo
  • Optical modulator
  • Phase-shift-keying
  • Quadrature-phase-shift-keying

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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