We demonstrate a free-space optical (FSO) communication scheme based on an all-optical wavelength converter (AOWC). An all-optical wavelength converter is constructed based on the four-wave mixing (FWM) effect, and information replication is achieved by adjusting the pump power and wavelength spacing to convert the light. The feasibility and stability of each channel in a strong turbulent channel are verified through an eye diagram and bit error rate testing, with a total transmission rate of 30 Gb/s. It has been proven that improving conversion efficiency helps to reduce the bit error rate of transmitted signals. This article presents an experimental analysis of free-space information transmission based on AOWC for the first time, providing a reference for establishing high-speed multiplexing communication.
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Dong et al. (2024) studied this question.
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