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An Introduction to Nonlinear Integrated Photonics: Structures and Devices.

Luigi Sirleto1, Giancarlo C Righini2

  • 1National Research Council (CNR), Institute of Applied Sciences and Intelligent Systems (ISASI), Via Pietro Castellino 111, 80131 Napoli, Italy.

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Summary

Nonlinear integrated photonics combines optics and nonlinear effects for new devices. This review covers fabrication, materials, and applications in communications and computing.

Keywords:
all-optical communicationsall-optical computingall-optical digital devicesall-optical signal processingall-optical signal regenerationintegrated photonicsmicrocomb generationnonlinear photonicsoptical materialsphotonic structuresphotonics devicessignal amplification and frequency conversionsupercontinuum generation

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Area of Science:

  • Optics and Photonics
  • Materials Science
  • Device Engineering

Background:

  • Nonlinear photonics research is rapidly advancing, driven by integrated optics.
  • New devices and applications emerge from the synergy between integrated optics and nonlinear photonics.
  • Material properties and waveguide design are crucial for enhancing nonlinear effects.

Purpose of the Study:

  • To provide a comprehensive overview of nonlinear integrated photonics.
  • To discuss fabrication processes, integration platforms, and materials.
  • To highlight applications in optical communications, signal processing, computing, and quantum optics.

Main Methods:

  • Review of fabrication processes for semiconductors, glasses, lithium niobate, and 2D materials.
  • Presentation of various waveguide structures for nonlinear applications.
  • Summary of traditional and innovative nonlinear materials.

Main Results:

  • Discussion of fabrication techniques and integration platforms.
  • Examples of nonlinear photonic integrated devices for diverse applications.
  • Overview of materials with high nonlinear coefficients.

Conclusions:

  • Nonlinear integrated photonics offers groundbreaking device possibilities.
  • The field requires suitable materials and advanced waveguide designs.
  • This work serves as a guide for researchers in this growing area.