光载毫米波在光纤中传输色散性能研究

J4 ›› 2009, Vol. 26 ›› Issue (4): 505-512.

• 纤维与波导光学 • 上一篇

光载毫米波在光纤中传输色散性能研究

陈罗湘^1,2 黄诚²陈林²

湘潭职业技术学院, 湖南湘潭，411102; 湖南大学计算机与通信学院,长沙 410082

收稿日期:2008-09-10 修回日期:2009-02-20 出版日期:2009-07-28 发布日期:2009-06-29
通讯作者: 陈罗湘（1965-2-12），男，汉族，湖南省湘潭市人，湘潭职业技术学院副教授，湖南大学硕士研究生，主要从事光纤通信研究。 E-mail:clxclx10@163cn.com

Dispersion performance of optical millimeter-wave transmission on fiber

CHEN Luo-Xiang^1,2, HUANG Cheng², CHEN Lin²

1 Department of Information Engineer, Xiangtan Vocational & Technical, Xiangtan, 411102, China;
2 School of computer and communication, Hunan University,Changsha 410082,China

Received:2008-09-10 Revised:2009-02-20 Published:2009-07-28 Online:2009-06-29

摘要/Abstract

摘要：

提出了并理论分析了一种采用单电极Mach–Zehnder调制器(SD-MZM)产生光载毫米波的方案。采用电混频器将射频信号与基带数字信号混频后再利用单电极调制器产生双边带调制信号并发送至光纤，在基站使用一个交叉复用器(IL)将双边带信号的中心载波与一阶边带信号进行分离，中心载波可用于上行链路的光载波，而一阶边带产生光载毫米波；理论分析了该毫米波的色散特性并在仿真平台上验证了其正确性，研究发现由于光纤色散引起两个一阶边带的延时不同, 从而导致毫米波能量的损失和解调信号的码间干扰，限制了毫米波的最大传输距离。

关键词: 光通信, Radio-Over-Fibre, 光载毫米波, 光纤色散, 载波抑制(OCS)调制

Abstract:

A methed to generate millimeter(mm)-wave using only one single-electrode Mach–Zehnder modulator (SD-MZM) has been proposed and theoretically analysised . To generate a mixing signal ,the baseband signal is mixed with the radio signal using an electric mixer. And the double-sideband(DSB) signal generated from SD-MZM drived by the mixing signal is transmited to base station(BS) over fiber.The optical carrier of the DSB signal which can be reused for uplink connection and the first-order optical sidebands of the DSB signal which generate the millimeter-wave are separated by an optical interleaver (IL) at base station(BS).The dispersion performance of the millimeter-wave is analyzed systematically by theory and simulation. According to theory and simulation result, the different delay of two first sidebands duo to the fiber dispersion leads to power loss of mm-wave and the Inter-Symbol Interference(ISI) of demodulated signals ,so it limits the maximum propagation distance of mm-wave.

Key words: optical communication, radio-over-fibre, optical millimeter wave, fibre dispersion, optical carrier suppression modulation

中图分类号:

陈罗湘黄诚陈林. 光载毫米波在光纤中传输色散性能研究[J]. J4, 2009, 26(4): 505-512.

CHEN Luo-Xiang, HUANG Cheng, CHEN Lin. Dispersion performance of optical millimeter-wave transmission on fiber[J]. J4, 2009, 26(4): 505-512.

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光载毫米波在光纤中传输色散性能研究

Dispersion performance of optical millimeter-wave transmission on fiber

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