无线光通信中的非成像集中器

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1、无线光通信中的非成像集中器第27卷第4期2003年8月激光技术LASERTECHNOI.oGYVoi.27.No.4August.2003文章编号:1001.3806(2003)04.0311-06NonimagingconcentratorsinopticalwirelesscommunicationsJinWei.ZhangHaitao,GongMali,YanPing,YangXin,ZhangKai,JiangFeng(DepartmentofPrecisionInstruments.TsinghUaUniversity.Beijing.100084)Abstract:Int

2、hefieldofopticalwirelesslinks.concentratorsthataredesignedbythetoolsofnoninmgingoptics锄beusedtOcollectthelightradiationandaremorecompactandhavehigherco/hetioneffieieneiesthanimaging~certtrators.Hemisphericalconcentratorsarestudiedbyraytracing.thenforseveralnormalnonimaginga3ncentrato~:hemispher

3、icalconcentrators.compoundparabolicconcentrators(cPc).dielectrictotallyinternallyreflectingconcentrators(DTIRC).simultaneousmultiple~Lrfacesconcentrators(SMS)andinhomogeneousmediaooncerttrators(Polmonbracket).thedesignmethodsandtheperfom~e.g.thegainandthefieldofview(FOV)arecomparedHwellHtheappl

4、icationsuggestion.Keywords:nonimagingconcentrator;gain;raytracing;fieldofview;opticalwireless无线光通信中的非成像集中器金伟张海涛巩马理闫平杨欣张凯姜丰(清华大学精密仪器系数字光电实验室,北京.1ooo84)摘要:在无线光通信领域.利用非成像光学设计的集中器能够聚集光辐射能量,而且相对于成像性集中器具有更紧凑的结构和更高的增益.利用光线追迹法对半球形集中器的性质进行了分析与研究.对好几种非成像集中器:半球形集中器.复合抛物线形集中器.介质内部全反射集中器.多表面集中器.多相介质集中器.从设计原

5、理,增益和视场进行比较.并分析其应用场合.关键调:非成像集中器;增益;光线追迹;视场;无线光通信中田分类号:TN929.1文献标识码:AIntroductionAwirelessopticalcommunicationlinkcanhavedifferentlinkconfigurations.IfweadoptthenotationdirectedsuchasTable1.wecansummarizesixpossiblelinkconfigurations.illustratedinFig.1.作者简介;金伟.男.1978年1月出生.硬士.从事无线光通信方面研究工作.收稿日期:2

6、003.01.23;收到修改稿日期:2003.03.04non-directedL0snon-L0sdirectedtmmnltter:narrow-beamf●d._patterndirectedrecm'ver:IMirrowfield0fvt'L~vdirectedlink:a3UslStofadirectedtransmitterand0directedrecm'vernm-dimctedh,~,,-:tter:tmtd-lmBledM6mimtemnon-directedreco'ver:widefmid0fvt'L~vnon-directedlink:consist0fa

7、directedU'mlamitterandadL-ectedreceiverhybridllnk:consistofeitheradirectedU'm~ttelrandnon-directedl'~-tl'vtrofnm-dimctedtransmitterandadirectedreceunobstructedline-of-sightp_【hbetweenthetr~.smitterandreceiverd葛tr:t.,dline-of-~ight