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Related Experiment Videos

Phase ripple correction: theory and application.

Josh A Conway1, George A Sefler, Jason T Chou

  • 1Electronics and Photonics Laboratory, The Aerospace Corporation, 355 South Douglas, El Segundo, California 90245, USA. josh.a.conway@aero.org

Optics Letters
|May 17, 2008
PubMed
Summary
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A new digital algorithm corrects spectral phase ripple distortion in broadband optical signals. This method improves signal fidelity in photonic systems, even outperforming ideal components.

Area of Science:

  • Optics and Photonics
  • Signal Processing

Background:

  • Broadband optical signals can be distorted by spectral phase ripple from dispersive devices.
  • Chirped Fiber Bragg Gratings (CFBGs) are a common source of such distortions.

Purpose of the Study:

  • To develop and demonstrate a digital postprocessing algorithm for correcting spectral phase ripple distortion.
  • To improve signal fidelity in photonic systems affected by CFBGs.

Main Methods:

  • A digital postprocessing algorithm exploiting the static deterministic nature of spectral phase ripple.
  • Demonstration using empirical data from systems with chirped fiber Bragg gratings (CFBGs).
  • Application within a photonic time-stretch system.

Main Results:

Related Experiment Videos

  • The algorithm significantly improved signal fidelity by 9 dB in a photonic time-stretch system.
  • The technique was effective in mitigating additive noise alongside distortion correction.
  • Achieved signal fidelity superior to that of an ideal dispersive element.

Conclusions:

  • Digital postprocessing offers an effective solution for correcting spectral phase ripple distortion.
  • The developed algorithm enhances signal fidelity and noise mitigation in optical systems.
  • This method presents a powerful tool for improving performance in photonic applications.