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Microwave Photonics Systems Based on Whispering-gallery-mode Resonators
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Supercontinuum generation in quasi-phasematched waveguides.

C R Phillips1, Carsten Langrock, J S Pelc

  • 1Edward L. Ginzton Laboratory, Stanford University, Stanford, California 94305-4085, USA. chris.phillips@stanford.edu

Optics Express
|October 15, 2011
PubMed
Summary
This summary is machine-generated.

We numerically investigated supercontinuum generation in quasi-phase-matched waveguides, capturing nonlinear processes for octave-spanning spectra. Simulations match experimental results, explaining spectral broadening mechanisms.

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Area of Science:

  • Nonlinear optics
  • Quantum optics
  • Photonics

Background:

  • Supercontinuum generation is crucial for various applications.
  • Understanding nonlinear processes is key to controlling spectral broadening.
  • Lithium-niobate waveguides offer unique nonlinear properties.

Purpose of the Study:

  • To numerically investigate supercontinuum generation in quasi-phase-matched waveguides.
  • To capture second and third order nonlinear processes.
  • To explain pulse dynamics in octave-spanning spectral broadening.

Main Methods:

  • Single-envelope numerical approach.
  • Modeling of quasi-phase-matched waveguides.
  • Comparison with experimental results in lithium-niobate waveguides.

Main Results:

  • Simulations agree with experimental results.
  • The competition between nonlinear effects (χ((2)) and χ((3))) is analyzed.
  • Chirped gratings and stimulated Raman scattering enhance spectral broadening.

Conclusions:

  • The study provides a comprehensive numerical investigation of supercontinuum generation.
  • It clarifies the interplay of nonlinear effects in spectral broadening.
  • The findings contribute to the understanding and control of octave-spanning spectra generation.