Frequency response measurement of Mach-Zehnder modulators utilizing double carrier based on low frequency detection

Yujia Zhang; Yaowen Zhang; Lingjie Zhang; Ying Xu; Yutong He; Shangjian Zhang; Zhiyao Zhang; Yong Liu

doi:10.1117/12.2601474

9 October 2021 Frequency response measurement of Mach-Zehnder modulators utilizing double carrier based on low frequency detection

Yujia Zhang, Yaowen Zhang, Lingjie Zhang, Ying Xu, Yutong He, Shangjian Zhang, Zhiyao Zhang, Yong Liu

Author Affiliations +

Proceedings Volume 11902, Real-time Photonic Measurements, Data Management, and Processing VI; 1190211 (2021) https://doi.org/10.1117/12.2601474
Event: SPIE/COS Photonics Asia, 2021, Nantong, JS, China

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.

Citation Download Citation

Yujia Zhang, Yaowen Zhang, Lingjie Zhang, Ying Xu, Yutong He, Shangjian Zhang, Zhiyao Zhang, and Yong Liu "Frequency response measurement of Mach-Zehnder modulators utilizing double carrier based on low frequency detection", Proc. SPIE 11902, Real-time Photonic Measurements, Data Management, and Processing VI, 1190211 (9 October 2021); https://doi.org/10.1117/12.2601474

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