Cisco Cisco DWDM Transceiver Modules 白皮書
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Figures 3 and 4 depict the current and forecast distributions of fiber types in campus and building
backbones.
Figure 3. Installed Base: Worldwide Campus Backbones
Source: In Premises Optical Fiber Installed Base Analysis to 2010, Alan Flatman, April 2007.
Figure 4. Installed Base: Worldwide Building Backbones
Source: In Premises Optical Fiber Installed Base Analysis to 2010, Alan Flatman, April 2007.