High loss budget and high capacity employing self-phase modulation in long-reach passive optical networks OFDM system

• Main Authors: Chu, Hsuan-Hao, 褚軒豪
• Other Authors: Chen, Jye-hong
• Format: Others
• Language: en_US
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/69556824276803935472

碩士 === 國立交通大學 === 光電工程研究所 === 102 === In order to meet the demand of broadband in the future, the FSAN (Full Service Area Networks) will set the standard for next-generation passive optical network (NGPON), which is named as the NGPON2. The NGPON2 provides 40-Gbps capacity to support 1-Gbps data rate for optical network unit (ONU), and cover the distance from 20-km to 100-km. Consequently, the Optical OFDM PON with intensity modulation and direction (IMDD) is very suitable for NGPON2 system because the method offer high spectral efficiency and flexible bandwidth allocation. However, the Optical IMDD OFDM system will face some challenges which include RF power fading, Subcarrier-to-Subcarrier-Intermixing Interference (SSII), and lower power budget. Therefore, in my work, we take the self-phase modulation into consideration to solve the RF power fading and employ the SSII compensation to create the better data rate. Finally, we experimentally demonstrate the 60-km OFDM transmission to show 32-dB loss budget without inline and pre-amplifier. Employing 10-GHz electro-absorption modulator (EAM) and positive intrinsic negative (PIN), the system is economic to support 32ONUs with >1-Gbps/ONU capacity.