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Related Concept Videos

Standing Waves in a Cavity01:28

Standing Waves in a Cavity

A household microwave and lasers are examples of standing electromagnetic waves in a cavity. When two conducting metal plates are placed parallel at the nodal planes, it creates a cavity where standing waves are formed. The cavity between the two planes is analogous to a stretched string held at the points x = 0 and x = L. Here, the distance 'L' between the two planes must be an integer multiple of half of the wavelength. The wavelengths that satisfy this condition are given by:
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Related Experiment Video

Updated: Jun 22, 2026

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source
12:19

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Published on: April 4, 2017

Optical solitons in a silicon waveguide.

Jidong Zhang, Qiang Lin, Giovanni Piredda

    Optics Express
    |June 24, 2009
    PubMed
    Summary
    This summary is machine-generated.

    Researchers achieved optical soliton formation in a short silicon waveguide using low pulse energy. This study observed significant spectral narrowing in anomalous dispersion, differing from prior experiments.

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    Area of Science:

    • Photonics
    • Nonlinear Optics
    • Materials Science

    Background:

    • Optical solitons are self-reinforcing light pulses that maintain their shape while propagating.
    • Previous research on optical soliton formation often required longer waveguides and higher pulse energies.
    • Silicon photonics offers a platform for compact and efficient nonlinear optical devices.

    Purpose of the Study:

    • To investigate the formation of optical solitons in a short silicon waveguide.
    • To explore the spectral characteristics of solitons at sub-picojoule pulse energies.
    • To analyze the influence of dispersion regimes (anomalous vs. normal) on soliton spectra.

    Main Methods:

    • Experimental generation of optical solitons in a 5 mm silicon waveguide.
    • Measurement of spectral narrowing and broadening under different dispersion conditions.
    • Validation of experimental findings through numerical simulations.

    Main Results:

    • First-time observation of optical soliton formation in a short (5 mm) silicon waveguide at sub-picojoule pulse energies.
    • Significant spectral narrowing observed in the anomalous-dispersion regime, contrary to previous findings.
    • Spectral broadening observed in the normal-dispersion regime, with dependence on input pulse carrier wavelength.

    Conclusions:

    • Short silicon waveguides can support optical soliton formation at unprecedented low pulse energies.
    • The spectral dynamics of solitons in silicon waveguides are highly dependent on the dispersion regime and wavelength.
    • Numerical simulations confirm the experimental observations, providing a theoretical basis for the phenomena.