All-optical clock recovery and pulse reshaping using semiconductor optical amplifier and dispersion compensating fiber in a ring cavity

Arnaud Fernandez, Chao Lu, Jacques W D Chi

Research output: Journal article publicationJournal articleAcademic researchpeer-review

21 Citations (Scopus)


An all-optical clock recovery device capable of continuously recovering the clock frequency of optical return-to- zero signals from a 10- to 12.5-GHz repetition rate is reported. The recovered clock consists of chirp-free Gaussian pulses at a diffraction limit with low timing jitter of ∼200 fs. We employ intracavity dispersion-compensating fiber (DCF) in order to eliminate chirp and asymmetry of semiconductor optical amplifier (SOA)-amplified pulses. This SOA+DCF ring configuration allows us to easily recover the clock over a 40-nm tuning range corresponding to the SOA gain bandwidth.
Original languageEnglish
Pages (from-to)1148-1150
Number of pages3
JournalIEEE Photonics Technology Letters
Issue number13
Publication statusPublished - 1 Jul 2008


  • Active mode locking
  • Clock recovery
  • Dispersion-compensating fiber
  • Semiconductor optical amplifiers (SOAs)

ASJC Scopus subject areas

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

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