WDM-PON Monitoring and Internet Access for Intelligent Buildings

• Main Authors: Chu-Lin Chang, 張莒林
• Other Authors: Shien-Kuei Liaw
• Format: Others
• Language: en_US
• Published: 2008
• Online Access: http://ndltd.ncl.edu.tw/handle/48849601109915217065

碩士 === 國立臺灣科技大學 === 電子工程系 === 96 === In this thesis, we are concerned with research about WDM-PON monitoring and Internet Access for Intelligent buildings. Following the criteria of Intelligent buildings, we choose the WDM-PON architecture as the optical network and access the center data system through the Internet network. The thesis proposes two architectures of Arrayed-Waveguide Grating (AWG) based WDM network, which mainly cover the functions of traffic and monitor. The monitoring module is located in central office. The monitoring signal can reach each node of an optical network unit, ONU, simultaneously. For the emergency condition, we first use the monitoring module to be a back up solution when the system is shut down. We propose another interesting monitoring system in chapter four. This system has all advantages of the first structure and provides higher performance for the monitoring function. Monitoring signal and OTDR equipment can be operated together in real time. The system maintains good nodes, whether failed nodes are being fixed or not. Downstream signals and upstream signals can be amplified using EDFAs to efficiently get more power budget. It can be operated from 10Gbps to 2.5Gbps easily. An OTDR test path is designed well to bypass EDFAs and has a good capability for long distances, like 10km, to nodes in an ONU Finally, we can access the central control system of a building from an open platform, that is, the Internet network. Customers can minimally invest in system installation and get their system upgraded quickly. In a matured network world, anyone can simply access any messages and any system controlled by computers. We use a mature Web Page language, ASP.net 2.0 developed by Microsoft, to develop a web page. System admin can easily manage users and system data by ASP.net 2.0. Any user of a building can access the system from the Internet network anywhere and anytime.