Self-referenced electro-optic response measurement of dual-parallel Mach-Zehnder modulators employing single-tone level control and low-frequency bias swing

A self-referenced method is proposed to characterize the electro-optic frequency response of dual-parallel Mach-Zehnder modulators (DPMZMs) based on single-tone level control and low-frequency bias swing. The single-tone driving signal and the low-frequency bias signal of the DPMZM mix with each oth...

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Bibliographic Details
Main Authors: Gu, C. (Author), He, Y. (Author), Liu, Y. (Author), Wang, M. (Author), Xu, Y. (Author), Zhang, S. (Author), Zhang, Y. (Author), Zhang, Z. (Author)
Format: Article
Language:English
Published: Optica Publishing Group (formerly OSA) 2022
Subjects:
Online Access:View Fulltext in Publisher
LEADER 02423nam a2200421Ia 4500
001 10.1364-OE.454101
008 220425s2022 CNT 000 0 und d
020 |a 10944087 (ISSN) 
245 1 0 |a Self-referenced electro-optic response measurement of dual-parallel Mach-Zehnder modulators employing single-tone level control and low-frequency bias swing 
260 0 |b Optica Publishing Group (formerly OSA)  |c 2022 
300 |a 9 
856 |z View Fulltext in Publisher  |u https://doi.org/10.1364/OE.454101 
520 3 |a A self-referenced method is proposed to characterize the electro-optic frequency response of dual-parallel Mach-Zehnder modulators (DPMZMs) based on single-tone level control and low-frequency bias swing. The single-tone driving signal and the low-frequency bias signal of the DPMZM mix with each other after photodetection, and a low-frequency beat note is generated in the electrical domain. The functional relationship between the desired low-frequency amplitude and the single-tone driving level is investigated and established, from which the modulation depth and half-wave voltage are extracted with the help of regression analysis. We experimentally demonstrate the feasibility of the proposed method and compare it with the conventional ones to check the consistency. The self-referenced method features single-tone modulation and low-frequency detection for measuring high-speed DPMZMs, which avoids the use of a broadband photodetector (PD) and the influence of the uneven response of the PD. © 2022 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement 
650 0 4 |a Bias signal 
650 0 4 |a Driving signal 
650 0 4 |a Dual-parallel Mach-Zehnder modulators 
650 0 4 |a Electro-optic response 
650 0 4 |a Electro-optics 
650 0 4 |a Frequency bias 
650 0 4 |a Frequency response 
650 0 4 |a Level control 
650 0 4 |a Light modulation 
650 0 4 |a Light modulators 
650 0 4 |a Lower frequencies 
650 0 4 |a Measurements of 
650 0 4 |a Photo detection 
650 0 4 |a Photodetectors 
650 0 4 |a Regression analysis 
650 0 4 |a Response measurement 
700 1 |a Gu, C.  |e author 
700 1 |a He, Y.  |e author 
700 1 |a Liu, Y.  |e author 
700 1 |a Wang, M.  |e author 
700 1 |a Xu, Y.  |e author 
700 1 |a Zhang, S.  |e author 
700 1 |a Zhang, Y.  |e author 
700 1 |a Zhang, Z.  |e author 
773 |t Optics Express