Broadband optical wavelength conversion through four-wave mixing in W3-type AlGaAs photonic crystal waveguides

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 effi...

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Bibliographic Details
Published in:Applied physics express 2023-02, Vol.16 (2), p.22004
Main Authors: Oda, Hisaya, Hosokawa, Youhei, Hayashi, Kazuki, Ozaki, Nobuhiko, Ikeda, Naoki, Sugimoto, Yoshimasa
Format: Article
Language:English
Subjects:
four-wave mixing
nonlinear optics
photonic crystal waveguide
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Summary: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.
ISSN:1882-0778
1882-0786
DOI:10.35848/1882-0786/acba7c