Bi-directional spectral broadening measurements for accurate characterisation of nonlinear hybrid integrated waveguides

Autor: Mikhail Dyatlov, Philippe Delaye, Laurent Vivien, Nicolas Dubreuil
Rok vydání: 2022
Zdroj: EPJ Web of Conferences. 266:01007
ISSN: 2100-014X
DOI: 10.1051/epjconf/202226601007
Popis: The emerging interest in integrated optical technologies raises the need for precise characterisation techniques for waveguides presenting nonlinearities. Here we propose a non-interferometric measurement to accurately characterise the Kerr contribution in hybrid waveguides and illustrate its performances using SiN waveguides with a GSS chalcogenide top-layer. The sensitivity of our technique in terms of nonlinear phase reaches 10 mrad and its accuracy makes possible to extract the nonlinear contributions from the top-layer.
Databáze: OpenAIRE