Simple and spectrally-efficient design of high capacity hybrid WDM/TDM-PON with improved receiver sensitivity  

作　　者：KHAN Ahmed Muddassir ZHANG Jie ZHAO Yong-li GAO Guan-jun CHEN Sai WANG Dao-bin 

机构地区：[1]School of Telecommunication Engineering, Beijing University of Posts and Telecommunications

出　　处：《The Journal of China Universities of Posts and Telecommunications》2013年第3期114-120,共7页中国邮电高校学报（英文版）

基　　金：supported by the National Basic Research Program of China (2010CB328204);the National Natural Science Foundation of China (60932004);the Hi-Tech Research and Development Program of China (2012AA011301);the RFDP Project (20090005110013);the 111 Project (B07005) of China;the Fundamental Research Funds for the Central Universities (2011RC0406)

摘　　要：A simple design of hybrid wavelength division multiplexed/time division multiplexed passive optical network （WDM/ TDM-PON） is demonstrated for the high capacity next generation access （NGA） network, having advantages of both WDM and TDM based PON techniques. A 10 Gbit/s differential quadrature phase shift keying （DQPSK） data signal is used at optical line terminal （OLT） for downstream, whereas a 2.5 Gbit/s inverse return-to-zero （IRZ） data signal with high extinction ratio is used for upstream signal by intensity re-modulation of downstream signal, no additional laser is used at optical network unit （ONU）. Simulation results verify that aggregated 100 Gbit/s downstream transmissions of 10 DQPSK channels and aggregated 25 Gbit/s upstream transmission of 10 IRZ channels, using spectrally-efficient 50 GHz channel spacing, can be successfully achieved over a distance of 20 km with less than 1 dB transmission power penalties and improved receiver sensitivity.A simple design of hybrid wavelength division multiplexed/time division multiplexed passive optical network （WDM/ TDM-PON） is demonstrated for the high capacity next generation access （NGA） network, having advantages of both WDM and TDM based PON techniques. A 10 Gbit/s differential quadrature phase shift keying （DQPSK） data signal is used at optical line terminal （OLT） for downstream, whereas a 2.5 Gbit/s inverse return-to-zero （IRZ） data signal with high extinction ratio is used for upstream signal by intensity re-modulation of downstream signal, no additional laser is used at optical network unit （ONU）. Simulation results verify that aggregated 100 Gbit/s downstream transmissions of 10 DQPSK channels and aggregated 25 Gbit/s upstream transmission of 10 IRZ channels, using spectrally-efficient 50 GHz channel spacing, can be successfully achieved over a distance of 20 km with less than 1 dB transmission power penalties and improved receiver sensitivity.

关 键 词：centralized light source hybrid WDM/TDM-PON DQPSK IRZ receiver sensitivity 

分 类 号：TN929.1[电子电信—通信与信息系统] TN915.6[电子电信—信息与通信工程]