Colorless ONU implementation for WDM-PON using direct-detection optical OFDM

• 来源期刊: 光电子快报（英文版）
• 年，卷（期）: 2013,（2）
• 页码范围: 135-138
• 页数: 4页
• 语种: 英文
• DOI: 10.1007/s11801-013-2407-x

摘要

A novel architecture for the colorless optical network unit (ONU) is proposed and experimentally demonstrated with direct-detection optical orthogonal frequency division multiplexing (DDO-OFDM).In this architecture,polarization-division multiplexing is used to reduce the cost at ONU.In optical line terminal (OLT),quadrature amplitude modulation (QAM) intensity-modulated OFDM signal with x-polarization at 10 Gbit/s is transmitted as downstream.At each ONU,the optical OFDM signal is demodulated with direct detection,and y-polarization signal is modulated for upstream on-off keying (OOK) data at 5 Gbit/s.Simulation results show that the power penalty is negligible for both optical OFDM downstream and the on-off keying upstream signals after over 50 km single-mode fiber (SMF)transmission.