100-Gb/s DQPSK transmission experiment without OTDM for 100G ethernet transport

Masahiro Daikoku, Itsuro Morita, Hidenori Taga, Hideaki Tanaka, Tetsuya Kawanishi, Takahide Sakamoto, Tetsuya Miyazaki, Takahisa Fujita

Research output: Contribution to journalArticle

55 Citations (Scopus)


In order to realize a future 100-Gb Ethernet (100 GbE) transport, 100-Gb/ s transmission without 100-GHz-class electronics and optical time-division-multiplexing technique was demonstrated. By using a differential quadrature phase-shift-keying (DQPSK) modulation format and commercially available electronics, 2- and 50-km transmissions of 100-Gb/ s signal were successfully achieved over a standard single mode fiber. The receiver sensitivity, chromatic dispersion, and differential group delay tolerances of 100-Gb/s DQPSK signal were also evaluated. Through these evaluations, the possibility of DQPSK modulation for future 100-GbE transport is verified.

Original languageEnglish
Pages (from-to)139-145
Number of pages7
JournalJournal of Lightwave Technology
Issue number1
Publication statusPublished - 2007 Jan 1


  • 100-gigabit Ethernet (100 GbE)
  • Differential quadrature phase-shift-keying (DQPSK)
  • Return to zero (RZ)-DQPSK

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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    Daikoku, M., Morita, I., Taga, H., Tanaka, H., Kawanishi, T., Sakamoto, T., Miyazaki, T., & Fujita, T. (2007). 100-Gb/s DQPSK transmission experiment without OTDM for 100G ethernet transport. Journal of Lightwave Technology, 25(1), 139-145. https://doi.org/10.1109/JLT.2006.888162