High precision simulation of a mode locked ring laser using SOA and fiber for generation of λ=1.55μm pulse train

Jacques Chi, Arnaud Fernandez, Chao Lu

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

A fiber ring laser with a semiconductor optical amplifier (SOA) as active component is investigated using a hybrid model. The SOA is studied using a newly-established 4th-order time-domain algorithm, which includes the nonlinear effects of carrier depletion and recovery, as well as gain dispersion. Comparison with existing analytical results shows that this algorithm can attain a relative precision of a few parts per thousand (∼10-3) or better, which is essential for predicting waveform of optical pulse. The transmission in other parts of the ring laser is carried out in frequency domain. Our model predicts a pulse width of ∼10ps with a 10GHz external modulation, and reveals higher stability, better waveform, as well as easier locking conditions with dispersion-compensating fiber (DCF). A diffraction-limited Gaussian pulse train can be obtained, with its carrier frequency effectively red-shifted due to band-pass filter. All these are in good agreement with our experimental observations.
Original languageEnglish
Title of host publicationProceedings of the 2012 8th International Symposium on Communication Systems, Networks and Digital Signal Processing, CSNDSP 2012
DOIs
Publication statusPublished - 12 Nov 2012
Event2012 8th International Symposium on Communication Systems, Networks and Digital Signal Processing, CSNDSP 2012 - Poznan, Poland
Duration: 18 Jul 201220 Jul 2012

Conference

Conference2012 8th International Symposium on Communication Systems, Networks and Digital Signal Processing, CSNDSP 2012
Country/TerritoryPoland
CityPoznan
Period18/07/1220/07/12

Keywords

  • Electromagnetic propagation in dispersive medium
  • mode-locked laser
  • numerical simulations
  • optical pulses

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Signal Processing

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