Broadband intermodal four-wave mixing in a fully integrated Si-rich silicon nitride wavelength converter

Nonlinear mixing of optical waves is a powerful tool for the generation of new frequency components originating from fields that co-propagate in a phase-matched manner in a waveguide, and four-wave mixing in third-order nonlinearity media is an established technique for achieving this. Four-wave mixing between waves propagating in different modes of the same waveguide offers the potential for broadband operation while maintaining a relatively simple waveguide design. Here, we employ intermodal four-wave mixing in a few-mode silicon-rich silicon nitride waveguide and have designed on-chip mode converters and couplers, both to combine the different fields and separate them at the output. This talk will present the chip design and the experiments that have benefitted from the broadband nonlinear mixing.

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Publication Details

Published
2025-03-19
DOI
https://doi.org/10.1117/12.3041866
Primary Topic
Photonic and Optical Devices
Type
article
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Broadband intermodal four-wave mixing in a fully integrated Si-rich silicon nitride wavelength converter

Cosimo Lacava, Pavel Cheben, Kyle R. H. Bottrill, James Hillier et al.
Photonic and Optical Devices
article

Broadband intermodal four-wave mixing in a fully integrated Si-rich silicon nitride wavelength converter

Cosimo Lacava, Pavel Cheben, Kyle R. H. Bottrill, James Hillier, Daniele Melati, Ilaria Cristiani, Frédéric Y. Gardes, Glenn Churchill, Valerio Vitali, J. Gonzalo Wangüemert‐Pérez, N. Kalfagiannis, Periklis Petropoulos, Íñigo Molina‐Fernández, Jens H. Schmid, Alejandro Ortega‐Moñux, James C. Gates, Thalia Dominguez-Bucio, Hao Liu, Jose Manuel Luque Gonzalez
article en

Abstract

Nonlinear mixing of optical waves is a powerful tool for the generation of new frequency components originating from fields that co-propagate in a phase-matched manner in a waveguide, and four-wave mixing in third-order nonlinearity media is an established technique for achieving this. Four-wave mixing between waves propagating in different modes of the same waveguide offers the potential for broadband operation while maintaining a relatively simple waveguide design. Here, we employ intermodal four-wave mixing in a few-mode silicon-rich silicon nitride waveguide and have designed on-chip mode converters and couplers, both to combine the different fields and separate them at the output. This talk will present the chip design and the experiments that have benefitted from the broadband nonlinear mixing.

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