Hybrid Access Network Integrated With Wireless Multilevel Vector and Wired Baseband Signals Using Frequency Doubling and No Optical Filtering
Hybrid Access Network Integrated With Wireless Multilevel Vector and Wired Baseband Signals Using Frequency Doubling and No Optical Filtering
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DOI：
10.1109/lpt.2009.2016574
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发表时间：
2009-07
影响因子：
2.6
通讯作者：
P. Shih;Chun-Ting Lin;Wen-Jr Jiang;Yu-Hung Chen;J. Chen;S. Chi
中科院分区：
文献类型：
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作者：
P. Shih;Chun-Ting Lin;Wen-Jr Jiang;Yu-Hung Chen;J. Chen;S. Chi
这封信实验性地演示了一种混合接入网络，它同时支持光纤无线电和光纤到x系统。一个20-GHz的射频（RF）312.5-M符号/s的M进制相移键控（PSK）信号和基带（BB）1.25-Gb/s的开关键控信号被同时产生，并在一个相同的分布式基础设施上传输。有线BB信号与现有的无源光网络（PON）系统兼容，无线RF PSK信号也可以共享相同的分布式基础设施。所提出的系统没有RF衰落问题，在远程节点处没有窄带光学滤波器来分离RF和BB信号，并且可以携带矢量信号。此外，实现了用于光RF信号生成的倍频，以降低发射机的带宽要求。经过25公里标准信号模式光纤传输后，接收器灵敏度损失小于0.5 dB的RF和BB信道。
This letter experimentally demonstrated a hybrid access network which supports both radio-over-fiber and fiber-to-the-x systems. A 20-GHz radio-frequency (RF) 312.5-MSymbol/s M-ary phase-shift keying (PSK) signal and a baseband (BB) 1.25-Gb/s on-off keying signal are simultaneously generated and transmitted over an identical distributed infrastructure. The wired BB signal is compatible with the existing passive optical network (PON) system, and the wireless RF PSK signal can also share the same distributed infrastructure. The proposed system has no RF fading issue, no narrowband optical filter at remote node to separate the RF and BB signals, and can carry vector signals. Moreover, a frequency doubling for optical RF signal generation is achieved to reduce the bandwidth requirement of the transmitter. After transmission over 25-km standard signal-mode fiber, the receiver sensitivity penalties are less than 0.5 dB for both the RF and BB channels.