Vector modulation technologies for high-speed optical transmission

Tetsuya Kawanishi, Takahide Sakamoto, Akito Chiba, Atsushi Kanno

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations (Scopus)

Abstract

We present lightwave modulation techniques for high-speed signal generation in digital and analogue applications. Advanced modulation formats, such as differential quadrature phase-shift-keying, amplitude- and phase-shift-keying, quadrature-amplitude-modulation etc, were investigated to obtain enhanced spectral efficiency, where Mach-Zehnder modulators (MZMs) are commonly used to control optical amplitude or phase in lightwave signals. In this presentation, we describe lightwave modulation techniques for high-speed signal generation based on integrated MZMs. By using quad-parallel MZM, high-speed optical 16-QAM signals can be synthesized, where the baud rate and bit rate were 12.5 Gbaud and 50 Gb/s. Impact of extinction-ratio (ER) of MZMs on advanced modulation formats is also discussed. Imbalance in the MZMs due to fabrication error can be compensated by using a dual-parallel MZM. ER can be higher than 70 dB.

Original languageEnglish
Title of host publication2010 12th International Conference on Transparent Optical Networks, ICTON 2010
DOIs
Publication statusPublished - 2010 Oct 6
Externally publishedYes
Event2010 12th International Conference on Transparent Optical Networks, ICTON 2010 - Munich, Germany
Duration: 2010 Jun 272010 Jul 1

Publication series

Name2010 12th International Conference on Transparent Optical Networks, ICTON 2010

Other

Other2010 12th International Conference on Transparent Optical Networks, ICTON 2010
CountryGermany
CityMunich
Period10/6/2710/7/1

Keywords

  • High-speed transmission
  • Modulation
  • Waveguide device

ASJC Scopus subject areas

  • Computer Networks and Communications

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    Kawanishi, T., Sakamoto, T., Chiba, A., & Kanno, A. (2010). Vector modulation technologies for high-speed optical transmission. In 2010 12th International Conference on Transparent Optical Networks, ICTON 2010 [5549077] (2010 12th International Conference on Transparent Optical Networks, ICTON 2010). https://doi.org/10.1109/ICTON.2010.5549077