Differential processing for frequency chirp measurement using optical pulse synthesizer

Ken Kashiwagi, Satoshi Seki, Hiroyuki Tsuda, Hirokazu Takenouchi, Takashi Kurokawa

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


In this study, we introduced an optical pulse synthesizer (OPS) to measure frequency chirps of optical pulses by differential processing. The OPS has a single-chip integrated structure of all elements for the differential filtering and enables stable measurement. Because the exact filter causes a large loss, we employed a phase-only filter, whose frequency response was only in phase. We measured chirp rates of pulses which were induced by propagating standard single mode fibers with different lengths. The retrieved chirp rates were comparable to calculated results. We simulated accuracy of the method and concluded that our experiment had phase control accuracy within ~0.07π.

Original languageEnglish
Pages (from-to)135-140
Number of pages6
JournalOptics Communications
Publication statusPublished - 2017 Mar 15


  • Frequency chirp measurement
  • Photonic differentiation
  • Pulse shaping
  • Reconfigurable optical filter

ASJC Scopus subject areas

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


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