A Design of All-Optical Integrated Linearized Modulator Based on Asymmetric Mach-Zehnder Modulator

被引：3
作者：
Zhao, Yiru [1 ,2 ]
Li, Jinye [1 ]
Xiang, Zichuan [1 ,2 ]
Liu, Jianguo [1 ,2 ]
机构：
[1] Chinese Acad Sci, Inst Semicond, State Key Lab Integrated Optoelect, Beijing 100083, Peoples R China
[2] Univ Chinese Acad Sci, Coll Mat Sci & Optoelect Technol, Beijing 100049, Peoples R China
来源：
PHOTONICS | 2023年 / 10卷 / 03期
基金：
中国国家自然科学基金;
关键词：
linearity; integrated modulator; asymmetric Mach-Zehnder interferometer; SILICON;
D O I：
10.3390/photonics10030229
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We proposed an all-optical linearized modulator model suitable for an integration platform. The linearized modulator is formed by an asymmetric Mach-Zehnder modulator and a carrier-separated waveguide. We focus on the suppression of both intermodulation distortion (IMD3) and second-order harmonic distortions (SHD). As a result, the third-order nonlinear terms of IMD3 and second-order nonlinear terms of SHD are entirely suppressed, leading to a spurious free dynamic range of IMD3 (SFDRIMD3) improvement of similar to 14 dB and SFDRSHD improvement of similar to 3 dB compared with a standard MZM model. The influence of large RF input signals, losses, and fabrication deviations are also discussed to prove the feasibility of the model.
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页数：15
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