SNR improvement of DPSK signals in a semiconductor optical regenerative amplifier

Myunghun Shin*, Preetpaul S. Devgan, Vladimir S. Grigoryan, Prem Kumar

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

16 Scopus citations


Signal-to-noise ratio improvement using a semiconductor optical regenerative amplifier (SORA) is characterized. It is demonstrated that for a noise-degraded return-to-zero differential phase-shift keying signal at 10 Gb/s the Q factor at the SORA's output is improved relative to its input for both the phase and amplitude noise cases. The Q-factor improvement is 1.6 dB in single-channel operation for the phase-noise only case and 0.55 dB for the amplified spontaneous emission noise-only case through the SORA.

Original languageEnglish (US)
Pages (from-to)49-51
Number of pages3
JournalIEEE Photonics Technology Letters
Issue number1
StatePublished - 2006


  • Differential phase-shift keying (DPSK)
  • Optical regeneration
  • Semiconductor optical amplifier (SOA)

ASJC Scopus subject areas

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

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