2024
DOI: 10.1063/5.0220022
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A quasi-matching scheme for arbitrary group velocity match in electro-optic modulation

Siyuan Wang,
Hongxuan Liu,
Mai Wang
et al.

Abstract: Group velocity and impedance matches are prerequisites for high-speed Mach–Zehnder electro-optic (EO) modulators. However, not all platforms can realize matching conditions, restricting high-speed modulation in many practical conditions. Here, we propose and demonstrate a quasi-matching scheme to satisfy the group velocity and characteristic impedance matches by cascading fast-wave and slow-wave traveling wave electrodes. The effective group velocity can be flexibly adjusted by changing the ratio of fast-wave … Show more

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