全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

一种基于电-光强度调制的负反馈解调光纤通信方法

DOI: 10.13232/j.cnki.jnju.2015.04.001, PP. 659-664

Keywords: 纤通信,非线性效应,负反馈解调

Full-Text   Cite this paper   Add to My Lib

Abstract:

在模拟信号光纤通信系统中,链路的线性化程度和增益大小直接影响传输系统的性能,而这两种特性在很大程度上取决于链路中电信号调制和解调的方式。传统的传输方法是在发送端使用强度调制器对光信号进行强度调制,然后在接收端使用光电探测器实现电信号的解调。然而,由于传统方法中系统传递函数所固有的非线性效应,系统解调后的传输电信号质量会明显下降,产生信号失真,同时,系统的传输增益也较低,一般不超过-20db。本文针对上述传统方法中的缺陷,提出了一种基于负反馈解调机制的模拟信号光纤通信方法。该方法能够显著地减少电-光调制过程中所产生的非线性效应,同时提高了信号输出增益。经过一系列的数学推导,得到了关于该系统传输性能的解析表达式,并通过与数值仿真结果相比较,验证了该解析表达式的准确性和该传输系统的性能优越性。

References

[1]  novakd.enablingmicrowavephotonictechnologiesforantennaremoting.ieeeleosnewsletter,2009,23(1):21~24.
[2]  urickvj,godinezme,devganps,etal.analysisofananalogfiber-opticlinkemployingalow-biasedmach?zehndermodulatorfollowedbyanerbium-dopedfiberamplifier.ieeejournaloflightwavetechnology,2009,27(12):2013~2019.
[3]  masellab,zhangx.linearizedopticalsingle-sidebandmach?zehndermodulatorforradio-over-fibersystems.ieeephotonicstechnologyletters,2007,19(24):2024~2026.
[4]  chouhf,ramaswamya,zibard,etal.highlylinearcoherentreceiverwithfeedback.ieeephotonicstechnologyletters,2007,19(12):940~942.
[5]  zibard,johanssonla,chouhf,etal.phase-lockedcoherentdemodulatorwithfeedbackandsamplingforopticallyphase-modulatedmicrowavelinks.journaloflightwavetechnology:ajointieee/osapublication,2008,26(15):2460-2475.
[6]  waked,nkansaha,gomesnj.radiooverfiberlinkdesignfornextgenerationwirelesssystems.ieeejournaloflightwavetechnology,2010,28(16):2456~2464.
[7]  capmanyj,ortegab,pastord,etal.discrete-timeopticalprocessingofmicrowavesignals.ieeejournaloflightwavetechnology,2005,23(2):702~723.
[8]  coxch.analogopticallinks:theoryandpractice.cambridgeuniversitypress,2006,304.
[9]  coxch,ackermanei,bettsge,etal.limitsontheperformanceofrf-over-fiberlinksandtheirimpactondevicedesign.ieeetransactionsonmicrowavetheoryandtechniques,2006,54(2):906~920.
[10]  zhug,liuw,fettermanhr.abroadbandlinearizedcoherentanalogfiber-opticlinkemployingdualparallelmach?zehndermodulators.ieeephotonicstechnologyletters,2009,21(21):1627~1629.
[11]  lis,zhengx,zhangh,etal.highlylinearradio-over-fibersystemincorporatingasingle-drivedual-parallelmach?zehndermodulator.ieeephotonicstechnologyletters,2010,22(24):1775~1777.
[12]  huangm,fuj,pans.linearizedanalogphotoniclinksbasedonadual-parallelpolarizationmodulator.osaopticsletters,2012,37(11):1823~1825.

Full-Text

Contact Us

[email protected]

QQ:3279437679

WhatsApp +8615387084133