All-optical processing of RZ-DPSK signals using counter-propagating pulses in a saturated SOA

H. Chaouch, E. Parsons, A. Tervonen, M. Mattila, W. Weiershausen, T. Von Lerber, S. Honkanen, J. Y. Yang, A. E. Willner, F. Küppers

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

We demonstrate three novel all-optical signal processing methods for RZ-DPSK signals using a saturated SOA. The two logically opposite pulse streams from a demodulated noisy RZ-DPSK signal counter-propagate in the SOA. This configuration decreases the fluctuations in the demodulated marks while preventing the spaces from getting amplified. Photonic balancing provides functionality analogous to electrical balanced detection by reducing the required OSNR, and saturated asymmetric filtering removes the in-band ASE noise before detection. These methods are demonstrated experimentally by observing eye diagrams and BER measurements at 10.7 Gb/s and 22.3 Gb/s.

Original languageEnglish
Pages (from-to)2576-2580
Number of pages5
JournalOptics Communications
Volume284
Issue number10-11
DOIs
Publication statusPublished - 15 May 2011
Externally publishedYes

Keywords

  • Nonlinear optical signal processing
  • Phase modulation
  • Semiconductor optical amplifiers

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