Novel wide-area coverage hybrid wavelength-time division multiplexing passive optical network system
A technology of passive optical network and time division multiplexing, which is applied in the direction of wavelength division multiplexing system, selection device of multiplexing system, electrical components, etc. Small area and other issues, to achieve the effect of low operation and maintenance costs, overcome their own defects, and simple network structure
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[0033] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0034] The present invention provides a novel wide-area coverage hybrid wavelength division time division multiplexing passive optical network system, such as figure 1 as shown,
[0035] In the central computer room as the network convergence point, there are several OLT central offices of TDM-PON, OLT1...OLTn, n=1, 2, 3..., the downlink data of each TDM-PON branch adopts specific wavelength optical modulation, The downlink optical signals of different optical wavelengths output through specific wavelength optical modulation to distinguish each OLT, and the downlink optical signals of different optical wavelengths corresponding to the OLT are multiplexed into the backbone optical fiber by the WDM device at the central office for downward transmission.
[0036]According to the distribution of the access areas along the trunk fiber, a reconfigurable optical ad...
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