The study of optical FSK modulation for 40-Gb/s WDM-PON Network with Centralized Lightwave Source
This paper proposes and numerically investigated a novel high-speed wavelength-division-multiplexed passive optical network (WDM-PON) architecture with colorless user terminals based on the use of a different modulation scheme for downstream and upstream transmission. In the central office (CO), based on the carrier suppressing functionality of Mach-Zehnder modulator (MZM) and differential-phase-shift-keying to amplitude-shift-keying conversion using Mach-Zehnder delay interferometer, 40-Gb/s optical frequency shift keying (FSK) is generated and employed for transmitting the downstream data. In the remote node (RN) or optical network unit (ONU), the upstream data is re-modulated at 2.5-Gb/s by an intensity modulator and sent back to CO with the same fiber. Since only one light source is needed for each WDM channel, and the MZM to generate carrier suppressed signal can be shared by all the channels, a centralized 40-Gb/s WDM-PON access system with low-cost configuration is realized. Error free transmission over 20-km SMF can be observed for both downstream and upstream signals in our simulation.
Frequency shift keying (FSK) Mach-Zehnder delay interferometer (MZDI) passive optical networks (PONs).
Minghao Li Wei Hong xinliang zhang Wei Li Dexiu Huang
Wuhan National Laboratory for Optoelectronics and the School of Optoelectronics Science andEngineeri Wuhan National Laboratory for Optoelectronics and the School of Optoelectronics Science and Engineer
国际会议
2008亚太光通信会议(Asia-Pacific Optical Communications 2008)
杭州
英文
2008-10-26（万方平台首次上网日期，不代表论文的发表时间）