Work

Segmented electric field poling of Si3N4-polymer hybrid electro-optic waveguides

Year: 2025

Type: article

Abstract: Electric field poling of electro-optic polymer (EOP) in hybrid waveguides is highly challenging due to the discontinuity in electric field distribution, which leads to a low Pockels electro-optic (EO) coefficient or dielectric breakdown.We propose the segmented poling technique in Si 3 N 4 /EOP hybrid waveguides to address this challenge.Dipolar chromophores near an electrode interface first align with a weak poling electric field, and then a strong field is applied for the chromophore alignment near the waveguide interface.This technique effectively avoids dielectric breakdown, and the tuning efficiency of the EO Mach-Zender interferometer (MZI) filters is improved from 31.7 pm/V to higher than 50 pm/V, with a highest Pockels coefficient of 114 pm/V.

Source: Chinese Optics Letters

DOI: 10.3788/col202523.071301

Authors: Yingzhou Yu, Hengqi Liu, Kaixin Chen, Jieyun Wu

Institution: University of Electronic Science and Technology of China

Language: English

Topic: Photorefractive and Nonlinear Optics

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: bronze

Funders: National Natural Science Foundation of China, Huawei Technologies

Awards: G1236687706, G53551388