A Hybrid CATV/OFDM Lightwave Transport System

• Main Authors: Fu-Chih Hu, 胡富智
• Other Authors: Hai-Han Lu
• Format: Others
• Language: en_US
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/8e2b4c

碩士 === 國立臺北科技大學 === 光電工程系研究所 === 101 === In recent years, with the ubiquitous popularity of handheld devices, the demands on wireless and wired-line capacity have grown rapidly. The next generation communication systems require large data rate and broadband services highly. Hybrid transport system is promising candidates to meet the demands in wireless and wire-lined optical access networks. In this research, we proposed and demonstrate an integrated long-reach passive optical network (PON) and in-house graded-index plastic optical fiber (GI-POF) network architecture for hybrid cable television (CATV) /orthogonal frequency division multiplexing (OFDM) signals transmission. By reasonably multiplexing the OFDM and CATV signals in to a CATV transmitter, both signals originated from a central office (CO) are successfully transmitted over a span of 60 km single mode fiber (SMF) and another span of 25 m GI-POF to consumers’ devices. Although the SMF and GI-POF have different core sizes and attenuation features, no any bridge circuit or wavelength converter is utilized between them resulting in a transparent platform for the Internet service providers (ISPs) to directly manage their long-distance services in suburban or rural areas. In this case, the average packet delay and packet overhead size can be greatly reduced and the quality of services (QoS) can be maintained easier. Good experimental performances of the CATV and OFDM signals transmissions proof the practice and efficiency of this proposal to extend multimedia services from metro areas to suburban or rural areas.