Mr. Jing Zhou Profile

Jing Zhou

at The Hong Kong Polytechnic Univ.

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Proceedings Article | 27 November 2024 Paper

Ultra-high-resolution optical vector analysis based on optical double-sideband modulation

Wenyu Wang, Jing Zhou, Changyuan Yu

Proceedings Volume 13236, 1323609 (2024) https://doi.org/10.1117/12.3034487

KEYWORDS: Microwave photonics, Photodetectors, Double sideband modulation, Signal processing

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Microwave photonics is an interdisciplinary research field that combines the fields of optics and radio frequency. The main functions of microwave photonic systems include photon generation, processing, control and distribution of microwave and millimeter wave (mm-wave) signals. Because of its combined advantages of optics and radio frequency, it is used in applications such as broadband wireless access networks, sensor networks, radar, satellite communications, instrumentation, and warfare systems. This article reviews the development and applications of microwave photonics, providing an overview of photon generation of microwave and millimeter-wave signals, photon processing of microwave and millimeter-wave signals, photon-assisted microwave measurements, fiber-optic radio systems, and integrated microwave photonics. Among them, the optical vector analysis (OVA) technology in Microwave spectrum analysis is analyzed from the principles, development status, structural examples and other aspects, and the OVA based on optical double sideband (ODSB) modulation is studied and simulated in detail. And the performance of the ODSB-based OVA is improved by using the measurement range broadening technology based on optical frequency comb, the measurement error elimination technology based on carrier suppression and balanced photoelectric detection, and the linearly frequency modulation (LFM)-based OVA.

Proceedings Article | 27 November 2024 Paper

Power control of ultra-wideband optical communication system based on optimization algorithm

Xingyu Zhu, Jing Zhou, Changyuan Yu

Proceedings Volume 13236, 132360F (2024) https://doi.org/10.1117/12.3035357

KEYWORDS: Optical communications, Wavelength division multiplexing, Optical networks

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In order to address the challenges brought by high bandwidth requirements to optical communication networks and improve the capacity of ultra-wideband wavelength division multiplexing systems, an optical power optimization algorithm based on the marine predator algorithm is used to optimize the launched power to achieve the goal of maximizing channel capacity. At the same time, the maximum capacity strategy, high and flat capacity strategy, and flattest capacity strategy are applied to meet different transmission requirements, achieving a balance between capacity and ripple. The simulation results show that compared with the brute force search method, the marine predator algorithm-based optimization algorithm significantly reduces the optimization time required and achieves advantages in both total capacity and ripple flatness. This method can be used to quickly optimize optical network design before actual deployment.

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