Soft detection of multichip DPSK over the nonlinear fiber-optic channel

Yoav Yadin, Alberto Bilenca, Moshe Nazarathy

Research output: Contribution to journalArticlepeer-review

17 Scopus citations


We analyze the performance of a recently proposed multichip differential phase-shift-keying (DPSK) format over the nonlinear fiber-optic channel. For a single wavelength nonlinear phase-noise-limited channel, a multichip DPSK receiver based on a three-chip observation can attain more than two orders of magnitude bit-error-rate reduction relative to a standard DPSK receiver, or equivalently ∼1-dB improvement in Q-factor, significantly exceeding the 0.2-dB improvement achieved by the same format over a linear optical channel.

Original languageEnglish
Pages (from-to)2001-2003
Number of pages3
JournalIEEE Photonics Technology Letters
Issue number9
StatePublished - 1 Sep 2005
Externally publishedYes


  • Differential phase-shift keying (DPSK)
  • Optical fiber communication
  • Phase modulation
  • Phase noise

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering


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