Cost effective scheme for OLT in next generation passive optical access network based on noise free optical multi carrier
Cost effective scheme for OLT in next generation passive optical access network based on noise free optical multi carrier
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DOI：
10.1109/cc.2016.7513204
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发表时间：
2016-07
影响因子：
4.1
通讯作者：
R. Ullah;Bo Liu;Qi Zhang;Qinghua Tian;Amjad Ali;Yousaf Khan;Feng Tian;M. Zia;H. Ahmad;Lijia Zhang;X. Xin
中科院分区：
文献类型：
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作者：
R. Ullah;Bo Liu;Qi Zhang;Qinghua Tian;Amjad Ali;Yousaf Khan;Feng Tian;M. Zia;H. Ahmad;Lijia Zhang;X. Xin
我们提出了一种具有成本效益的多载波产生技术，最大限度地减少了无源光接入网（PON）的成本。在这项研究中，在光线路终端（奥尔特）侧的多载波源取代激光器阵列在PON解决。在25-GHz频率间隔下，所产生的光多载波表现出良好的音调噪声比（TNR）i。e.大于20 dB，最小幅度差i. e. 1.5dB.在奥尔特处，来自所有信道的基于多载波信号的复用差分相移键控（DPSK）数据通过25 km单模光纤传输，每个信道具有用于下行链路的10 Gbps。当在光网络单元（ONU）处检索所传输的信息时，使用强度调制（IM）开关键控（OOK）来重新调制下行链路信号的一部分以用于以10-Gbps的上行链路传输。仿真结果与理论分析相吻合，在上下行链路均能实现10 Gbps对称数据速率的无差错传输。对于上行链路和下行链路传输，接收功率对于BER为10-9的所有信道都是足够的，具有最小的功率损失。功率预算计算不同的分裂比显示任何看不见的损失优秀的系统利润。所提出的设置提供了一种具有成本效益的方式，最大限度地减少传输损耗，并提供更大的系统的余量在PON架构。
We propose a cost-effective multi-carrier generation technique which minimizes the passive optical access network (PON) costs. In this study replacement of laser array with multi-carrier source at optical line terminal (OLT) side in PON is addressed. With 25-GHz frequency spacing, the generated optical multi-carriers exhibit good tone to noise ratio (TNR) i. e. above 20dB, and least amplitude difference i. e. 1.5dB. At the OLT, multi-carriers signal based multiplexed differential phase shift keying (DPSK) data from all the channels each having 10Gbps for downlink is transmitted through 25km single mode fiber. While the transmitted information is retrieved at optical network unit (ONU), part of the downlink signal is re-modulated using intensity modulated (IM) on-off keying(OOK) for upstream transmission at 10-Gbps. Simulation results are in good agreement with the theoretical analysis, showing error free transmission in downlink and uplink with 10Gbps symmetric data rate at each channel. The received power, both for uplink and downlink transmission, is adequate for all channels at BER of 10-9 with minimum power penalties. Power budget is calculated for different splitting ratios showing excellent system margins for any unseen losses. The proposed setup provides a cost-effective way minimizing transmission losses, and providing greater system's margin in PON architecture.