A triple-frequency microwave photonic link based on a polarization-multiplexing dual-parallel Mach-Zehnder modulator

Kexin Li; Hongbiao Zhang; Yunxin Wang; Feng Yang; Dayong Wang; Dengcai Yang

doi:10.1117/12.2537587

20 November 2019 A triple-frequency microwave photonic link based on a polarization-multiplexing dual-parallel Mach-Zehnder modulator

Kexin Li, Hongbiao Zhang, Yunxin Wang, Feng Yang, Dayong Wang, Dengcai Yang

Author Affiliations +

Proceedings Volume 11192, Real-time Photonic Measurements, Data Management, and Processing IV; 111920G (2019) https://doi.org/10.1117/12.2537587
Event: SPIE/COS Photonics Asia, 2019, Hangzhou, China

Abstract

A triple-frequency microwave photonic link is proposed based on a polarization-multiplexing dual-parallel Mach- Zehnder modulator (PM-DPMZM). The lower sub-DPMZM is biased at the maximum transmission point to obtain the 2nd-order RF sidebands. Meanwhile, the RF signal modulates the upper sub-DPMZM through an electrical 90° hybrid coupler. The upper sub-DPMZM works at the carrier-suppressed single-sideband (CS-SSB) modulation to obtain the +1st order RF sideband. An optical band pass filter is used to filter out the +2nd-order RF sideband, and only the +1storder and -2nd-order RF sidebands are output for the frequency beating at a photodetector (PD). The frequency triple signal of 3ω_RF is obtained correspondingly. The experimental link is built. The results show that the RF signal from 8 to 12 GHz is tripled, and frequency tripled signal at 24 to 36 GHz is acquired. The minimal spur suppression ratio of triple-frequency signal is 20dB. A relatively low-frequency signal can be used to generate a high-frequency signal with well quality by this triple-frequency link. The proposed method can be applied in various microwave photonic transmitting systems.

Citation Download Citation

Kexin Li, Hongbiao Zhang, Yunxin Wang, Feng Yang, Dayong Wang, and Dengcai Yang "A triple-frequency microwave photonic link based on a polarization-multiplexing dual-parallel Mach-Zehnder modulator", Proc. SPIE 11192, Real-time Photonic Measurements, Data Management, and Processing IV, 111920G (20 November 2019); https://doi.org/10.1117/12.2537587

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