An Ultra-dense Optical Comb Based DWDM-OFDM-PON System
We proposed and demonstrated an ultra-dense optical comb based DWDM-OFDM-PON scheme.At the optical line terminal(OLT),a cost-effective optical frequency comb generator(OFCG)is proposed and achieved as the multi-wavelength optical source.The OFCG is capable to provide multiple channels with reconfigurable wavelength spacing for ultra-dense WDM-PON based access network.In our scheme,OFDM signal with multi-level modulation will be encoded into the OFCG lines for the downstream transmission to enhance the spectral efficiency while the OFDM signal will be remodulated by OOK data for the upstream transmission due to its ease of implementation in optical network unit(ONU)side.In experiments,we demonstrated that 10 optical lines with 25 GHz channel spacing are generated and they were modulated by 2.5-GB/s QPSK-OFDM for the downlink signal transmission.We also demonstrated that the multiple wavelengths from the OFCG.
R.Lin M.Tang R.Wang Z.Feng S.Fu D.Liu J.Chen P.Shum
Next Generation Internet Access National Engineering Lab(NGIA)School of Optical and Electronic Infor School of ICT,The Royal Institute of Technology(KTH),Kista,Sweden School of EEE,Nanyang Technological University,Singapore
国际会议
Progress in Electromagnetics Research Symposium 2014(2014年电磁学研究新进展学术研讨会)
广州
英文
699-700
2014-08-01（万方平台首次上网日期，不代表论文的发表时间）