Research on space laser－fiber array coupling technology in optical space division multiple access wireless laser networking
Citation
孟立新, 张兆元, 宿百兴, 张立中, & 杨升凯. (2022). 光空分多址式无线激光通信组网中空间光－光纤阵列耦合技术研究 [Research on space laser－fiber array coupling technology in optical space division multiple access wireless laser networking]. 激光杂志 (Laser Journal), 43(4), 10-18.
Keywords
- 自由空间光通信 / free-space optical communication
- 光空分多址 / optical space division multiple access
- 像方远心镜头 / image space telecentric lens
- 空间光－光纤阵列耦合 / space laser-fiber array coupling
- 逆向调制 / inverse modulation
- 无线激光通信组网 / wireless laser communication networking
- 光纤阵列 / fiber array
- 耦合效率 / coupling efficiency
- 离焦 / defocus
- ZEMAX
- MATLAB
- 光斑扩展 / facular expansion/spot expansion
- 视场 / field of view
- 系统稳定性 / system stability
- 双工通信 / duplex communication
- 光开关 / optical switch
- 光纤环行器 / optical fiber circulator
- 光纤分束器 / fiber beam splitter
- 光功率放大器 / optical power amplifier
Brief
The article proposes and investigates a low-power, small-size space laser communication network scheme using optical space division multiple access based on inverse modulation and focuses on the design of a telecentric lens and defocusing techniques to enhance the coupling efficiency and stability between spatial light and a fiber array.
Summary
This paper proposes a low-power, lightweight space laser communication network utilizing optical space division multiple access and inverse modulation. It focuses on the coupling of spatial light with a fiber array by designing an image-space telecentric lens for bidirectional communication and using defocusing to expand the light spot. Simulations show that expanding the light spot in a hexagonal fiber array significantly improves coupling efficiency, effective field of view coverage (by 25.6% when the spot radius increases from 40 μm to 80 μm), and system stability (by 50% with the same spot radius increase), enabling continuous and stable bidirectional optical communication for the proposed networking scheme.
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