Broadband optical wavelength conversion through four-wave mixing in W3-type AlGaAs photonic crystal waveguides. (22nd February 2023)

• Record Type: Journal Article
• Authors: Oda, Hisaya; Hosokawa, Youhei; Hayashi, Kazuki; Ozaki, Nobuhiko; Ikeda, Naoki; Sugimoto, Yoshimasa
• Is Part Of: Applied physics express. Volume 16:Number 2(2023)
• Publication Date: 2023-02-22
• Subjects: photonic crystal waveguide -- four-wave mixing -- nonlinear optics; Physics -- Periodicals; Technology -- Periodicals; 621.05
• DOI: 10.35848/1882-0786/acba7c
• Languages: English
• ISSNs: 1882-0778

Abstract

Abstract: We realized a wide-band wavelength conversion method through four-wave mixing in W3-type AlGaAs photonic crystal waveguides. AlGaAs exhibits a large third-order nonlinearity. Furthermore, because of its large bandgap, two-photon absorption can be avoided in the 1550 nm range. A four-wave mixing efficiency of −7 dB was obtained for a pump peak power of 7 W. Furthermore, by utilizing the two even guided bands of the W3-type photonic crystal waveguide, a conversion bandwidth greater than 38 nm was achieved with a conversion efficiency of −22 dB.