報告時(shí)間：2020年11月13日（周五）18:00-20:00

報告地點(diǎn)：騰訊會(huì )議，會(huì )議ID：45915113811

報告題目：Ionizing Radiation Effect of Rare Earth or Bismuth Doped/Co-doped Optical Fibres(稀土或鉍摻雜/共摻光纖的離子輻射效應)

報告簡(jiǎn)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.

針對苛刻的輻射環(huán)境應用，即衛星間通信、雷達、核電站等，已研究了摻鉺/摻鐿/摻鉍光纖的電離輻射效應。首先，研究摻鐿共摻雜光纖（EYDF）中輻射誘導的光暗化以及這些輻照的EYDF中的熱效應，其中顯然表現出可逆的熱效應。然后，通過(guò)分析鉍摻雜光纖（BDF）和鉍/鉺共摻雜光纖（BEDF）的吸收、發(fā)射和壽命，評估了輻射從非活性鉍引起的鉍活性中心（BAC）的活化。還檢查了諸如鐿共摻雜和輻射類(lèi)型等對輻射效果的影響因素。另外，已經(jīng)進(jìn)行了熱處理以改善γ/電子輻照后BEDF的性能。為了提高纖維的抗輻射性，已經(jīng)嘗試通過(guò)結合熱處理和氫負載來(lái)研究輻射硬化。最后，基于EYDF的熒光強度比（FIR）進(jìn)行了與輻射無(wú)關(guān)的溫度傳感器的演示，為輻射環(huán)境中的傳感領(lǐng)域提供了巨大的潛力。

報告人簡(jiǎn)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，博士，研究員，澳大利亞新南威爾士大學(xué)（UNSW）光子通信實(shí)驗中心實(shí)驗室主管，于2004年和2009年在中國科學(xué)技術(shù)大學(xué)獲得學(xué)士和博士學(xué)位，博士期間曾兩次受?chē)屹Y助，到UNSW光子通信實(shí)驗中心開(kāi)展光敏聚合物光纖的研究。主要從事光子學(xué)材料及其應用的研究，特別是特種光纖、光纖通信和傳感方面的研究工作，并主持《光子學(xué)網(wǎng)絡(luò )》、《光纖及光路》等教學(xué)實(shí)驗。在摻雜光纖、聚合物光纖光柵、鉍鉺光纖及超寬帶光發(fā)射等方面取得了一系列國際領(lǐng)先的研究成果，如在國際上首次報道3D打印的聚合物光纖預制棒及光纖；研制的三個(gè)模摻鉺放大光纖創(chuàng )新性應用于美國NEC公司的模分復用傳輸系統；將D-型光纖光柵成功應用于世界最大的風(fēng)力發(fā)電Vestas公司等。先后參與/主持澳大利亞國家研究基金（2項），國家自然科學(xué)基金項目（4項）、亞洲航空航天研發(fā)項目（1項）、國家/省級重點(diǎn)實(shí)驗室開(kāi)放課題項目（9項）、UNSW校級青年基金（1項）等19個(gè)項目的研究，項目經(jīng)費高達150萬(wàn)澳幣。迄今已在國內外著(zhù)名期刊及會(huì )議發(fā)表論文〉200篇，授權專(zhuān)利2項，受邀撰寫(xiě)學(xué)術(shù)專(zhuān)著(zhù)6章節，h因子為21，總共被引用1600多次。

本報告由燕山大學(xué)引才引智國際合作培育項目資助。

校內聯(lián)系人：信息科學(xué)與工程學(xué)院付興虎，18833822248

科學(xué)技術(shù)研究院

2020年11月9日