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LUO YANHUA

学术报告 《Ionizing Radiation Effect of Rare Earth or Bismuth Doped/Co-doped Optical Fibres》

活动时间:2020年11月13日(周五)18:00-20:00 活动地点:腾讯会议

报告时间:2020年11月13日(周五)18:00-20:00

报告地点:腾讯会议,会议ID:45915113811

报告题目:Ionizing Radiation Effect of Rare Earth or Bismuth Doped/Co-doped Optical Fibres(稀土或铋掺杂/共掺光纤的离子辐射效应)

报告简介:Targeting to the harsh radiation environment applications, i.e. inter-satellite communication, LiDARs, nuclear plant, etc., ionizing radiation effects of erbium, ytterbium or bismuth doped/co-doped optical fibres have been investigated. Firstly, the radiation-induced photodarkening in erbium/ytterbium co-doped optical fibre (EYDF) and the thermal effect in these irradiated EYDFs have been studied, which evidently displays reversible thermal effect. Then, the radiation induced activation of bismuth active centre (BAC) from inactive bismuth has been assessed through the analysis of the absorption, emission and lifetime of bismuth doped optical fibre (BDF) and bismuth/erbium co-doped optical fibre (BEDF). The influence factors, such as Yb co-doping and radiation type, upon the radiation effect have also been inspected. In addition, thermal treatment has been implemented to improve the performance of BEDF after gamma/electron irradiation. To improve the radiation resistance of the fibres, it has been attempted to investigate radiation hardening by combining thermal treatment and hydrogen loading. Finally, the demonstration of the radiation-independent temperature sensor based on fluorescence intensity ratio (FIR) of EYDF has been carried out, indicating great potential for the sensing field in radiation environment.

zhenduikekedefushehuanjingyingyong,jiweixingjiantongxin、leida、hedianzhandeng,yiyanjiulechaner/chanyi/chanbiguangxiandedianlifushexiaoying。shouxian,yanjiuchanyigongchanzaguangxian(eydf)zhongfusheyoudaodeguanganhuayijizheixiefuzhaodeeydfzhongderexiaoying,qizhongxianranbiaoxianchukeniderexiaoying。ranhou,tongguofenxibichanzaguangxian(bdf)hebi/ergongchanzaguangxian(bedf)dexishou、fasheheshouming,pinggulefushecongfeihuoxingbiyinqidebihuoxingzhongxin(bac)dehuohua。haijianchalezhuruyigongchanzahefusheleixingdengduifushexiaoguodeyingxiangyinsu。lingwai,yijingjinxinglerechuliyigaishanγ/dianzifuzhaohoubedfdexingneng。weiletigaoxianweidekangfushexing,yijingchangshitongguojieherechuliheqingfuzailaiyanjiufusheyinghua。zuihou,jiyueydfdeyingguangqiangdubi(fir)jinxingleyufushewuguandewenduchuanganqideyanshi,weifushehuanjingzhongdechuanganlingyutigonglejudadeqianli。

报告人简介:LUO YANHUA, PhD, Deputy director of Photonic & Optical Communications, University of New South Wales (UNSW), Australia. Dr Luo received his B.E and PhD degrees from University of Science and Technology of China (UTSC) in 2004 and 2009, respectively. His research interest is functional photonics materials, fibers and devices, including specialty optical fiber, optical fiber communication and sensing research work, etc. He presides over the experimental teaching on ‘Photonics Network’, ‘Optical Fiber and Optical Circuit’, etc. He has made many contributions in doped optical fibre, polymer optical fiber grating, Bi/Er co-doped optical fibre and its ultrabroad emission: i.e. developing 3 modes EDFA applied for the mode multiplexing transmission by NEC America Lab; introducing 3D printing technique for the fibre fabrication; develop D shaped fibre gratings applied for SHM of the world largest wind turbine by Vestas; proposing and developing bismuth erbium codoped fibre with ultrabroad band emission; etc. He has participated/hosted 19 projects, including: 2 ARC, 4 NSFC, 1 AFOSR, 1 ECR/FRG, 9 Open Funds, etc, with a total funding of ~1.5 million AUD. So far, he has held 2 China patents and co-authored >200 refereed journal / conference papers and 9 book chapters on these subjects. His papers have been cited >1600 times by ISI Web of Science, with an H-index 21.

luo yanhua,boshi,yanjiuyuan,aodaliyaxinnanweiershidaxue(unsw)guangzitongxinshiyanzhongxinshiyanshizhuguan,yu2004nianhe2009nianzaizhongguokexuejishudaxuehuodexueshiheboshixuewei,boshiqijiancengliangcishouguojiazizhu,daounswguangzitongxinshiyanzhongxinkaizhanguangminjuhewuguangxiandeyanjiu。zhuyaocongshiguangzixuecailiaojiqiyingyongdeyanjiu,tebieshitezhongguangxian、guangxiantongxinhechuanganfangmiandeyanjiugongzuo,bingzhuchi《guangzixuewangluo》、《guangxianjiguanglu》dengjiaoxueshiyan。zaichanzaguangxian、juhewuguangxianguangzha、bierguangxianjichaokuandaiguangfashedengfangmianqudeleyixilieguojilingxiandeyanjiuchengguo,ruzaiguojishangshoucibaodao3ddayindejuhewuguangxianyuzhibangjiguangxian;yanzhidesangemochanerfangdaguangxianchuangxinxingyingyongyumeiguonecgongsidemofenfuyongchuanshuxitong;jiangd-xingguangxianguangzhachenggongyingyongyushijiezuidadefenglifadianvestasgongsideng。xianhoucanyu/zhuchiaodaliyaguojiayanjiujijin(2xiang),guojiazirankexuejijinxiangmu(4xiang)、yazhouhangkonghangtianyanfaxiangmu(1xiang)、guojia/shengjizhongdianshiyanshikaifangketixiangmu(9xiang)、unswxiaojiqingnianjijin(1xiang)deng19gexiangmudeyanjiu,xiangmujingfeigaoda150wanaobi。qijinyizaiguoneiwaizhumingqikanjihuiyifabiaolunwen〉200pian,shouquanzhuanli2xiang,shouyaozhuanxiexueshuzhuanzhu6zhangjie,hyinziwei21,zonggongbeiyinyong1600duoci。

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