Parametric amplification in coupled nonlinear waveguides: The role of coupling dispersion

Minji Shi, Vitor Ribeiro, Auro M. Perego*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


We present the theory of parametric amplification in coupled nonlinear waveguides considering the frequency dependency of the coupling strength. We show that coupling dispersion can indeed compensate for the uncoupled individual waveguides dispersion enabling a substantial tailoring of the gain spectrum. Our theory describes both phase-sensitive and phase-insensitive operational modes, it can be straightforwardly generalized to include arbitrary higher-order waveguide and coupling dispersion and its predictions agree very well with numerical simulations both in the presence and in the absence of waveguide losses. It provides a tool for the design of novel versatile parametric amplifiers based both on coupled integrated waveguides and dual-core fibers too.
Original languageEnglish
Number of pages6
JournalFrontiers in Photonics
Early online date5 Apr 2023
Publication statusE-pub ahead of print - 5 Apr 2023

Bibliographical note

Copyright © 2023 Shi, Ribeiro and Perego. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.


  • Photonics
  • parametric amplification
  • coupled waveguides
  • coupling dispersion
  • nonlinear couplers
  • four wave mixing effects


Dive into the research topics of 'Parametric amplification in coupled nonlinear waveguides: The role of coupling dispersion'. Together they form a unique fingerprint.

Cite this