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      In the point-to-point topology, the device utilizes limited optical fiber resources and multiplexes several times the original bandwidth to achieve two-way convergence of multiple services between two points, greatly improving the transmission capacity of the optical fiber. Through the combined wave demultiplexer, the different band information to be transmitted is first aggregated together, and at the receiving end, the demultiplexer combines the previously aggregated information into different bands. This can reduce the difficulty of the backbone network wiring, and can expand the bandwidth and increase the transmission speed. If combined with our one-way network card, it can be more widely applied to the field of network security and national defense construction, effectively ensuring the security of information.
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