Characterization of the dynamical processes in all-optical signal processing using semiconductor optical amplifiers

Inuk Kang, Christophe Dorrer, Liming Zhang, Mihaela Dinu, Mahmoud Rasras, Lawrence L. Buhl, Steven Cabot, Ashish Bhardwaj, Xiang Liu, Mark A. Cappuzzo, L. Gomez, A. Wong-Foy, Y. F. Chen, Niloy K. Dutta, Sanjay S. Patel, David T. Neilson, C. Randy Giles, A. Piccirilli, James Jaques

Research output: Contribution to journalArticlepeer-review


We present experimental investigations of the dynamical properties of semiconductor optical amplifiers (SOAs) and their impacts in all-optical signal processing using SOAs. We introduce ultrafast optical signal characterization techniques to fully characterize the gain and phase dynamics of SOAs. We elucidate a consequence of the slow carrier recovery as pattern-dependent phase fluctuation in wavelength conversion of ON-OFF-keyed signals. We also analyze the conversion of the phase fluctuation into amplitude fluctuation limiting the performance of all-optical XOR operation. Finally, the performance of all-optical wavelength conversion of differential phase-shift-keyed signals is presented with emphasis on regeneration of the phase information.

Original languageEnglish (US)
Article number4538038
Pages (from-to)758-769
Number of pages12
JournalIEEE Journal on Selected Topics in Quantum Electronics
Issue number3
StatePublished - May 2008


  • Differential phase shift keying (DPSK)
  • Optical logic devices
  • Optical sampling
  • Optical signal processing
  • Phase shift keying (PSK)
  • Semiconductor optical amplifier (SOA)
  • Ultrafast pulse characterization
  • Wavelength conversion

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering


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