67 Assume that an optical signal experiences the following l

6.7 Assume that an optical signal experiences the following losses in an ideal PON link: 0.6 dB due to connectors and splices, fiber attenuation of 0.27 dB/km, and the splitter loss shown in Table 6.3. If the network designer includes a 2.0-dB safety margin to account for any unforeseen losses, verify the maximum transmission distances shown in Table 6.3 for the three splitter types using class B optics.

TABLE 6.3 Longest PON Transmission Distance Allowed Under Ideal Conditions Distance per Optical Class (km) Optical Splitting Ratio Class B Class C Class A 13 2 0 Splitter Loss (dB) 1:16 1:32 1:64 53 42 31 17 20

Solution

max transmission distance for Class A = 13 KM FOR PER splitting ratio

22 kmfor 32 spitting ratio