Experimental demonstration of novel source-free ONUs in bidirectional RF up-converted optical OFDM-PON utilizing polarization multiplexing.
Experimental demonstration of novel source-free ONUs in bidirectional RF up-converted optical OFDM-PON utilizing polarization multiplexing.
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DOI：
10.1364/oe.20.006230
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发表时间：
2012-03
期刊：
影响因子：
3.8
通讯作者：
Chongfu Zhang;Chen Chen-Chen;Yuan Feng;K. Qiu
中科院分区：
文献类型：
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作者：
Chongfu Zhang;Chen Chen-Chen;Yuan Feng;K. Qiu
我们提出并实验证明了一种新的具有成本效益的光正交频分复用的无源光网络（OFDM-PON）系统，其中所有的光网络单元（ONU）是无源的，不仅在光域，而且在电域，通过利用偏振复用（PolMUX）在下行链路传输。两个频率间隔为10 GHz的纯光波段和下行链路上变频的10 GHz OFDM信号分别在两个正交偏振态（SOP）中承载。10 GHz射频（RF）源可以由每个ONU中偏振分束后的两个纯光波段的外差产生，因此它可以用于下行OFDM信号的下变频和上行OFDM信号的上变频。在整个双向上变频OFDM-PON系统中，光线路终端（奥尔特）中仅采用单个RF源。实验结果成功地验证了我们提出的成本效益的光OFDM-PON系统的可行性。
We propose and experimentally demonstrate a novel cost-effective optical orthogonal frequency-division multiplexing-based passive optical network (OFDM-PON) system, wherein all optical network units (ONUs) are source-free not only in the optical domain but also in the electric domain, by utilizing polarization multiplexing (PolMUX) in the downlink transmission. Two pure optical bands with a frequency interval of 10 GHz and downlink up-converted 10 GHz OFDM signal are carried in two orthogonal states of polarization (SOPs), respectively. 10 GHz radio frequency (RF) source can be generated by a heterodyne of two pure optical bands after polarization beam splitting in each ONU, therefore it can be used to down-convert the downlink OFDM signal and up-convert the uplink OFDM signal. In the whole bidirectional up-converted OFDM-PON system, only one single RF source is employed in the optical line terminal (OLT). Experimental results successfully verify the feasibility of our proposed cost-effective optical OFDM-PON system.