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24 October 2017 Ultra-wideband microwave photonic link based on single-sideband modulation
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Proceedings Volume 10464, AOPC 2017: Fiber Optic Sensing and Optical Communications; 104641U (2017)
Event: Applied Optics and Photonics China (AOPC2017), 2017, Beijing, China
Comparing with the conventional double-sideband (DSB) modulation in communication system, single-sideband (SSB) modulation only demands half bandwidth of DSB in transmission. Two common ways are employed to implement SSB modulation by using optical filter (OF) or electrical 90° phase shift, respectively. However, the bandwidth of above methods is limited by characteristics of current OF and electrical phase shift. To overcome this problem, an ultra-wideband microwave photonic link based on SSB modulation is proposed and demonstrated. The radio frequency (RF) signal modulates a single-drive dual-parallel Mach-Zehnder modulator, and the SSB modulation is realized by combining an electrical 90° hybrid coupler and an optical bandpass filter. The experimental results indicate that the system can achieve SSB modulation for RF signal from 2 to 40 GHz. The proposed microwave photonic link provides an ultra-wideband approach based on SSB modulation for radio-over-fiber system.
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Jingnan Li, Yunxin Wang, Dayong Wang, Tao Zhou, Xin Zhong, Jiahao Xu, Dengcai Yang, and Lu Rong "Ultra-wideband microwave photonic link based on single-sideband modulation", Proc. SPIE 10464, AOPC 2017: Fiber Optic Sensing and Optical Communications, 104641U (24 October 2017);

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