期刊
OPTICS EXPRESS
卷 24, 期 16, 页码 18739-18744出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.24.018739
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资金
- Program 973 [2014CB340102]
- National Science Foundation (NSF) [61475022, 61505011, 61331008]
- Program 863 [2013AA014402]
High speed free space optical communication (FSOC) has taken advantages of components developed for fiber-optic communication systems. Recently, with the rapid development of few-mode-fiber based fiber communication systems, few-mode-fiber components might further promote their applications in FSOC system. The coupling efficiency between free space optical beam and few-mode fibers under atmospheric turbulence effect are investigated in this paper. Both simulation and experimental results show that, compared with single-mode fiber, the coupling efficiencies for a 2-mode fiber and a 4-mode fiber are improved by similar to 4 dB and similar to 7 dB respectively in the presence of medium moderate and strong turbulence. Compared with single-mode fiber, the relative standard deviation of received power is restrained by 51% and 66% respectively with a 4-mode and 2-mode fiber. (C) 2016 Optical Society of America
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