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Microwave Photonics Systems Based on Whispering-gallery-mode Resonators
12:18

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Published on: August 5, 2013

Photon energy lifter.

Zeno Gaburro1, Mher Ghulinyan, Francesco Riboli

  • 1Department of Physics, University of Trento and CNR-INFM, Povo, I-38050 Trento, Italy. gaburro@science.unitn.it

Optics Express
|June 17, 2009
PubMed
Summary
This summary is machine-generated.

We developed a novel photonic structure that shifts optical pulse frequencies with near-perfect efficiency. This technology preserves pulse shape and coherence, utilizing slow light in periodic structures for efficient wavelength conversion.

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Area of Science:

  • Photonics
  • Optical Engineering
  • Materials Science

Background:

  • Periodic photonic structures enable control over light propagation.
  • Slow group velocity in these structures is key for light-matter interactions.
  • Efficient optical signal processing is crucial for modern communication systems.

Purpose of the Study:

  • To propose a time-dependent, spatially periodic photonic structure for optical pulse frequency shifting.
  • To achieve efficient wavelength conversion without degrading pulse quality.
  • To validate the proposed structure using numerical simulations with realistic parameters.

Main Methods:

  • Theoretical proposal of a time-dependent, spatially periodic photonic structure.
  • Leveraging the slow group velocity of light in photonic structures.
  • Quantitative Finite Difference Time Domain (FDTD) simulations.
  • Modeling with optical parameters of conventional silicon technology.

Main Results:

  • Demonstrated a photonic structure capable of shifting the carrier frequency of optical pulses.
  • Achieved wavelength conversion efficiency close to 1.
  • Preserved the shape and coherence of the optical pulses during the process.
  • Validated the concept using FDTD simulations for silicon-based systems.

Conclusions:

  • The proposed time-dependent photonic structure offers a highly efficient method for optical pulse frequency shifting.
  • This approach enables wavelength conversion with minimal impact on pulse integrity.
  • The use of silicon technology suggests practical feasibility for integrated photonic devices.