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Related Concept Videos

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Enhancement-mode MOSFETs are pivotal components in electronics, distinguished by their capacity to act as highly efficient switches. They are part of the larger family of metal-oxide Semiconductor Field-Effect Transistors (MOSFETs). They are available in two types: p-channel and n-channel, each tailored to specific polarity operations.
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Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source
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Nonlinear multimode photonics on-chip.

Valerio Vitali1, Thalía Domínguez Bucio2, Hao Liu2

  • 1Electrical, Computer and Biomedical Engineering Department, University of Pavia, Pavia, 27100, Italy.

Nanophotonics (Berlin, Germany)
|August 7, 2025
PubMed
Summary
This summary is machine-generated.

Nonlinear multimode photonics leverages multiple spatial modes in integrated waveguides for advanced applications. This review highlights recent progress in frequency generation, optical signal processing, supercontinuum generation, and novel laser sources.

Keywords:
four-wave mixingintegrated waveguidesmultimode waveguidesnonlinear opticsoptical signal processingquantum optics

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Area of Science:

  • Integrated photonics
  • Nonlinear optics
  • Multimode waveguides

Background:

  • Nonlinear integrated photonics utilizes strong field enhancement in waveguides for efficient nonlinear effects.
  • Advances in material engineering and fabrication enable precise control of nonlinear dynamics.
  • Recent interest focuses on multimode waveguides, exploiting simultaneous use of spatial modes.

Purpose of the Study:

  • To review recent advances in nonlinear multimode photonics on-chip.
  • To discuss applications including frequency generation, optical signal processing, and supercontinuum generation.
  • To report on micro-resonator applications for lasers and frequency combs.

Main Methods:

  • Exploitation of intermodal nonlinear effects for frequency generation.
  • Demonstration of nonlinear multimode waveguides for optical signal processing (switching, logic operations).
  • Supercontinuum generation in nonlinear multimode waveguides.
  • Utilization of high-Q micro-resonators with multimode waveguides.

Main Results:

  • Intermodal nonlinear effects enable wavelength conversion, photon pair generation, and mid-infrared frequency generation.
  • Multimode waveguides facilitate simultaneous multi-channel and multi-functional optical signal processing.
  • Supercontinuum generation is demonstrated in these structures.
  • Multimode micro-resonators yield compact, tunable Raman lasers and low-threshold optical frequency combs.

Conclusions:

  • Nonlinear multimode integrated photonics offers versatile platforms for diverse photonic applications.
  • The ability to tune dispersion profiles of different modes is key to realizing advanced functionalities.
  • This field shows significant promise for future integrated optical devices and systems.