{"title":"Frequency response measurement of Mach-Zehnder modulators utilizing double carrier based on low frequency detection","authors":"Zhiyao Zhang, Yaowen Zhang, Lingjie Zhang, Ying-Xuan Xu, Yutong He, Shang-jian Zhang, Yujia Zhang, Yong Liu","doi":"10.1117/12.2601474","DOIUrl":null,"url":null,"abstract":"A frequency-shifted dual-carrier method is proposed for microwave characterization of Mach-Zehnder modulators based on low frequency detection. The proposed method utilizes the heterodyne products between the beats of two modulated sidebands, and achieves calibration-free microwave measurement of Mach-Zehnder modulators with the help of electrical spectrum analysis. Our method features low-frequency detection with only one microwave source and avoids the responsivity correction introduced by the photodetector. In the experiment, the frequency response of a Mach-Zehnder electro-optic intensity modulator is measured by using the proposed method, where the measurement results fit in with those obtained by using the conventional optical spectrum analysis method.","PeriodicalId":328885,"journal":{"name":"Real-time Photonic Measurements, Data Management, and Processing VI","volume":"90 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2021-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Real-time Photonic Measurements, Data Management, and Processing VI","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1117/12.2601474","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
A frequency-shifted dual-carrier method is proposed for microwave characterization of Mach-Zehnder modulators based on low frequency detection. The proposed method utilizes the heterodyne products between the beats of two modulated sidebands, and achieves calibration-free microwave measurement of Mach-Zehnder modulators with the help of electrical spectrum analysis. Our method features low-frequency detection with only one microwave source and avoids the responsivity correction introduced by the photodetector. In the experiment, the frequency response of a Mach-Zehnder electro-optic intensity modulator is measured by using the proposed method, where the measurement results fit in with those obtained by using the conventional optical spectrum analysis method.
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