Abstract:
FTTx network is the system that connects users and the main network with the high speed fiber which can transfer the data rate up to 10 Gbps. In the near future, There is high tendency that the bandwidth usage will be increased. As a result, there would not be enough bandwidth available for every one. This thesis presents the FTTx system using Wavelength Selective Switch (WSS) incorporated with Dynamic Wavelength and Bandwidth Allocation (DWBA) by simulating in a computer program. Preliminary, switching characteristic effects are ignored in order to analyze the essential factors which limit the system capacity as well as to find the furthest distance the signal can transmit The results from the analysis indicate that this system can transmit the data up to 160 Gbps per one user in which the furthest distance to transmit the signal are up to 55.2 km. When there is forward error correction (FEC) at bit error rate (BER) equal to 10-4 and the important factor of the system is the signal attenuation, which affects the system Nevertheless, as every WSS is influenced by switching characteristic, this thesis also presents the FTTx using WSS incorporated with DWBA regarding switching characteristic effects. There are 6 WSS used, each of them is divided into 2 cases. First, with 4 wavelengths transmitting data up to 10 users, this case is apt for the place where high number of users demand low data rate. This system can transmit data rate to each user up to 40 Gbps. Second, with 8 wavelengths transmitting data up to 5 users, this case is apt for the place where few number of users demand high data rate. This system can transmit data rate to each user up to 80 Gbps. Thereafter, Calculate for the true power budget in the system and also power penalty in each WSS to respond users’ demand and be practical in the present and from now on.