Performance evaluation of 6-level PSK signal using differential demodulation with partial symbol delay

H. Y. Choi*, I. Morita

*この研究の対応する著者

研究成果: Conference contribution

2 被引用数 (Scopus)

抄録

We demonstrate an optical transmission system based on a 6-level PSK modulation format and differential detection with a partial symbol delay. The 6-level PSK signal is simply generated by using a chirp-free Mach-Zehnder modulator followed by a phase modulator. In order to convert the phase information of the 6-level PSK signal into the intensity, we utilize a pair of two Mach-Zehnder delay-line interferometers with having a differential delay less than the symbol duration of the signal unlike a conventional differential detection scheme. We evaluate the performances of the differential 6-level PSK signal and compare them with that of a conventional DQPSK signal. In addition, the transmission performance of the 21.4-Gb/s 6-level PSK signal is experimentally verified in a 240-km long dispersionmanaged fiber link. Furthermore, additional simulation results show that the tolerance to optical filtering and chromatic dispersion of the 107-Gb/s differential 6-level PSK signal is improved significantly by adopting the partial demodulation scheme.

本文言語English
ホスト出版物のタイトルOptical Transmission Systems, Subsystems, and Technologies IX
DOI
出版ステータスPublished - 2011
外部発表はい
イベントOptical Transmission Systems, Subsystems, and Technologies IX - Shanghai, China
継続期間: 2011 11月 132011 11月 16

出版物シリーズ

名前Proceedings of SPIE - The International Society for Optical Engineering
8309
ISSN(印刷版)0277-786X

Conference

ConferenceOptical Transmission Systems, Subsystems, and Technologies IX
国/地域China
CityShanghai
Period11/11/1311/11/16

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • コンピュータ サイエンスの応用
  • 応用数学
  • 電子工学および電気工学

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