a) A GPON optical fiber network is used to provide data/voice services to 23 subscribers, 16 of which are placed 57 Km from the Optical Line Terminal 57. The splitter serving the 16 subscribers is located 55 Km from the Optical Line Terminal. Seven subscribers are also located 30 Km from the Optical Line Terminal and are also served by a splitter placed 2Km from the subscribers. Given that, three new clients want the same service 2Km from any of the 16 subscribers.
i. Design the network indicating all the nodes.
ii. Further, explain the function of each network devices in the GPON you designed.
b) A fibre link for transmission of life stream to a client 59 Km from the source. The link employs 1:2 and 1:16 splitters. Given that there is a splice every 17 Km from the Optical Line Terminal towards the client in the network with splice loss of – 1dB, connector loss – 6dB, operating wavelength of 1550 nm and input power 6 dBm. For the link to work the received power range is – 25 dBm to – 21.65 dBm. Evaluate downstream-received power and comment on your answer.
c) What type of optical fiber cable is used to establish the link in question 6b? Explain the reason or reasons for your answer.