Network structure for realizing the full-optical virtual private network between more than two passive optical networks
A passive optical network and virtual private network technology, applied in the field of optical fiber communication, can solve problems such as flexibility limitations and achieve the effect of large access range
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[0025] As shown in Figure 1, the optical network nodes in the same passive optical network use different wavelengths (λ1, λn) (n is the number of wavelengths used in the network) to transmit uplink data, which is coupled into one through the arrayed waveguide grating optical fiber. Different passive optical networks use different time slots for communication (t1, t2), coupled together through the 1:N coupler of the remote node, and transmitted to the optical line terminal. If the dynamic reflector pairs λ1 and λn (n is the number of wavelengths used in the network) are in the pass state, the optical signal passes through the reflector, passes through the circulator and the arrayed waveguide grating, and is received by the corresponding receiver. If the dynamic reflector is reflecting a certain wavelength (λ1), its uplink signal will be reflected back to the remote node, and then broadcast to all passive optical networks, and be received by the optical network node of the correspon...
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