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Related Concept Videos

Intensity Of Electromagnetic Waves01:22

Intensity Of Electromagnetic Waves

The energy transport per unit area per unit time, or the Poynting vector, gives the energy flux of an electromagnetic wave at any specific time. For a plane electromagnetic wave with E0 and B0 as the peak electric and magnetic fields and traveling along the x-axis, the time-varying energy flux can be given by the following equation:
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Related Experiment Video

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

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Published on: April 4, 2017

Lossless intensity modulation in integrated photonics.

Sunil Sandhu1, Shanhui Fan

  • 1Ginzton Laboratoy, Stanford University, Stanford, California 94305, USA. centaur@stanford.edu

Optics Express
|March 16, 2012
PubMed
Summary
This summary is machine-generated.

We analyzed lossless intensity modulation in ring resonators, achieving infinite on/off ratios. These devices maintain input power, acting as efficient optical modulators.

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Area of Science:

  • Photonics and Optical Engineering
  • Nonlinear Optics
  • Integrated Optics

Background:

  • Ring resonators are fundamental components in integrated photonics.
  • Efficient intensity modulation is crucial for optical communication and signal processing.
  • Losses in modulators limit performance and increase energy consumption.

Purpose of the Study:

  • To investigate lossless intensity modulation in ring resonator systems.
  • To demonstrate modulation schemes yielding symmetrical outputs with high on/off ratios.
  • To analyze the dynamical behavior of these novel modulators.

Main Methods:

  • Dynamical analysis of two distinct ring resonator geometries.
  • Development and simulation of specific modulation schemes.
  • Theoretical evaluation of optical power conservation.

Main Results:

  • Achieved symmetrical output with an infinite on/off ratio in both geometries.
  • Demonstrated that the ring resonator systems function as lossless intensity modulators.
  • Confirmed time-averaged output optical power equals time-averaged input optical power.

Conclusions:

  • Lossless intensity modulation is feasible in specific ring resonator designs.
  • These modulators offer superior performance with no power dissipation.
  • Potential applications in energy-efficient optical signal processing and communication systems.