Journal
JOURNAL OF LIGHTWAVE TECHNOLOGY
Volume 40, Issue 12, Pages 3576-3591Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JLT.2022.3152812
Keywords
Laser beams; Phased arrays; Optical arrays; Resource management; Optical reflection; Adaptive optics; Optical fiber communication; Beam characteristics; beam splitting; optical intelligent reflecting surface; point-to-multipoint free space optical communication; power efficiency
Funding
- NSFC [61960206005, 61803211, 61971136, 61871111, 61501109]
- National Key Research and Development Plan [2018YFB1801101, 2016YFB0502202]
- Jiangsu NSF [BK20191261]
- Zhejiang Lab [2019LC0AB02]
- Open Research Fund Program of LIESMARS [20P01]
- Fundamental Research Funds for the Central Universities
- Zhishan Youth Scholar Program of SEU
- Research Fund of National Mobile Communications Research Laboratory, Southeast University
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This paper analyzes the micro-mirror array and phased array-type optical intelligent reflecting surface (OIRS) in point-to-multipoint free space optical communication (FSO) scenarios. The physical models and control algorithms of the OIRSs are derived, and beam splitting and multi-beam power allocation algorithms are proposed. The channel fading in FSO system and the comparison of two types of OIRSs in actual systems are discussed based on analytical results. Simulations and experiments are conducted to verify the feasibility of the models and algorithms.
Oriented to the point-to-multipoint free space optical communication (FSO) scenarios, this paper analyzes the micro-mirror array and phased array-type optical intelligent reflecting surface (OIRS) in terms of control mode, power efficiency, and beam splitting. We build the physical models of the two types of OIRSs. Based on the models, the closed form solution of OIRSs' output power density distribution and power efficiency, along with their control algorithms have been derived. Then we propose the algorithms of beam splitting and multi-beam power allocation for two types of OIRSs. The channel fading in FSO system and the comparison of two types of OIRSs in actual systems are discussed according to the analytical results. Simulations and experiments are both presented to verify the feasibility of models and algorithms.
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