70-GHz-Spaced 40 × 42.7 Gb/s Transpacific Transmission Over 9400 km Using Prefiltered CSRZ-DPSK Signals, All-Raman Repeaters, and Symmetrically Dispersion-Managed Fiber Spans

T. Tsuritani*, K. Ishida, A. Agata, K. Shimomura, I. Morita, T. Tokura, H. Taga, T. Mizuochi, N. Edagawa, S. Akiba

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

39 Citations (Scopus)

Abstract

70-GHz-spaced 40 × 42.7 Gb/s prefiltered carrier-suppressed return-to-zero differential phase-shift keying (CSRZ-DPSK) signals have been transmitted over transpacific distances for the first time, using all-Raman repeaters with two pump-wavelengths, dispersion-managed fiber commercially available in volume, and an ETDM receiver. In this paper, first, in order to enhance the spectral efficiency, the impact of bandlimitation to a CSRZ-DPSK signal was experimentally investigated in comparison to a conventional CSRZ-on-off-keying (OOK) signal, and we found that the bandlimitation tolerance of CSRZ-DPSK signal was smaller than that of CSRZ-OOK signal in back-to-back condition. We also confirmed that the prefiltering CSRZ-DPSK signal with up to 65 GHz bandlimitation potentially had better transmission performance than the prefiltered CSRZ-OOK signal. In addition, we found that, although the nonlinear transmission penalty was increased by bandlimitation, this penalty for CSRZ-DPSK signal was smaller than that for CSRZ-OOK signal. Through this study, long-term stability of the transmission performance was also evaluated with low-speed signal polarization scrambling without using any polarization mode dispersion (PMD) compensation.

Original languageEnglish
Pages (from-to)215-224
Number of pages10
JournalJournal of Lightwave Technology
Volume22
Issue number1
DOIs
Publication statusPublished - 2004 Jan
Externally publishedYes

Keywords

  • DPSK
  • Optical fiber communication
  • Optical filtering
  • Raman amplifier
  • Spectral efficiency
  • Transpacific transmission
  • Wavelength-division multiplexing

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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