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基于四倍频矢量信号和波长重用的双向光载无线系统

Bidirectional Radio over Fiber System Based on Frequency-Quadrupled Vector Signal and Wavelength Reuse

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摘要

为提高光载无线(RoF)系统传输容量, 提出了一种基于四倍频矢量信号生成及波长重用技术的双向RoF传输系统。该系统中, 下行链路由基于受激布里渊散射效应的窄带光带阻滤波器和Sagnac环在光域实现四倍频矢量信号调制; 在基站端, 未调制的边带由检偏器滤出作为上行链路光载波实现波长重用。传输实验验证了24 GHz的四倍频正交相移键控(QPSK)信号的拍频产生, 并测试了码率为400 Mbit/s的8 GHz下行频带QPSK和400 Mbit/s的上行基带开关键控(OOK)信号的6.15 km光纤传输。实验结果验证了该系统的可行性。

Abstract

In order to improve the transmission capacity of the radio over fiber (RoF) system, a bidirectional RoF transmission system is proposed based on the generation of frequency-quadrupled vector signal and wavelength reuse technique. For the downlink transmission, a stimulated Brillouin scattering-assisted narrow-band optical notch filter and a Sagnac loop are employed to generate a frequency-quadrupled vector signal directly in optical domain. At the base station, the unmodulated sideband of the downlink signal is filtered out by a polarizer and reused as the uplink optical carrier to achieve wavelength reuse. In the experiment, a quadrature phase shift keying (QPSK) signal centered at 24 GHz is generated by frequency beating. A 400 Mbit/s downlink QPSK signal at 8 GHz and a 400 Mbit/s baseband on-off keying (OOK) signal as uplink are used to evaluate the system performance over a 6.15 km fiber link. The feasibility of the proposed system is confirmed by the experimental result.

Newport宣传-MKS新实验室计划
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中图分类号:TN929.11

DOI:10.3788/cjl201845.1006005

所属栏目:光纤光学与光通信

基金项目:国家863计划(2015AA016903)、国家自然科学基金(61775185,61405165)、四川省国际科技合作重点项目(2018HH0002)

收稿日期:2018-03-22

修改稿日期:2018-05-08

网络出版日期:2018-05-22

作者单位    点击查看

庄云圣:西南交通大学信息光子与通信研究中心, 四川 成都 610031
潘炜:西南交通大学信息光子与通信研究中心, 四川 成都 610031
叶佳:西南交通大学信息光子与通信研究中心, 四川 成都 610031
李沛轩:西南交通大学信息光子与通信研究中心, 四川 成都 610031
唐堂:西南交通大学信息光子与通信研究中心, 四川 成都 610031
邹喜华:西南交通大学信息光子与通信研究中心, 四川 成都 610031

联系人作者:庄云圣(yunshengzhuang@163.com)

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引用该论文

Zhuang Yunsheng,Pan Wei,Ye Jia,Li Peixuan,Tang Tang,Zou Xihua. Bidirectional Radio over Fiber System Based on Frequency-Quadrupled Vector Signal and Wavelength Reuse[J]. Chinese Journal of Lasers, 2018, 45(10): 1006005

庄云圣,潘炜,叶佳,李沛轩,唐堂,邹喜华. 基于四倍频矢量信号和波长重用的双向光载无线系统[J]. 中国激光, 2018, 45(10): 1006005

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