简介:Anultra-broadbandandfabrication-tolerantsiliconpolarizationrotatorsplitterisproposedinthisLetter.Benefittingfromthebroadbandandlow-losscharacteristicsofthebi-leveltaperandcounter-taperedcoupler,thedesigneddevicehasasimulatedinsertionlossandcrosstalkoflessthan0.2and-15dBinthewavebandfrom1290to1610nm.Thesecharacteristicsmakeitvaluableinapplicationswithlargebandwidthrequirements,suchasfull-gridCoarsewavelengthdivisionmultiplexer(CWDM)anddiplexer/triplexerfiber-to-the-homesystems.Thefabricationtoleranceofthedesignisalsoanalyzed,showingthatthedeviceperformanceisquitestablewithnormalmanufacturingerrorsinsiliconphotonicsfoundries.
简介:AseriesofAlx-(Alq3)1-xgranularfilmsispreparedonSiwaferwithnativeoxidelayerusingco-evaporationtechnique.Largelateralphotovoltaiceffect(LPE)isobserved,withanoptimalLPVsensitivityof75mV/mminx=0.35sample.ThedependenceofLPEontemperatureandAlcompositionisinvestigated,andthepossiblemechanismisdiscussed.
简介:2017TCRChina(TCR国际汽车中国系列赛)上海揭幕站的比赛在上海国际赛车场顺利完成第二站比赛的角逐.NewFaster车队黄楚涵在三个回合的比赛中勇夺第一、第三回合的冠军,第二回合冠军则由捷凯车队的王日昇/马家柱组合所夺.综合三个回合比赛结果,王日昇/马家柱夺得该站比赛的MichelinWinnerOfTheRaceWeekend奖项,NewFaster车队黄楚涵夺得Speedline最快圈速奖,捷凯车队夺得最佳车队奖.本站比赛的第一、第二回合比赛中,TCRChina及TCRAsia两项赛事混跑.虽然是两项独立的赛事,但更多参赛车辆的聚集无疑让比赛的竞争更加激烈,更多的缠斗画面也给观赛者带来了更佳的视觉享受.
简介:SiO_2thinfilmscontainingSi_(1-x)Ge_xquantumdots(QDs)arepreparedbyionimplantationandannealingtreatment.Thephotoluminescence(PL)andmicrostructuralpropertiesofthinfilmsareinvestigated.ThesamplesexhibitstrongPLinthewavelengthrangeof400—470nmandrelativelyweakPLpeaksat730and780nmatroomtemperature.Blueshiftisfoundforthe400-nmPLpeak,andtheintensityincreasesinitiallyandthendecreaseswiththeincreaseofGe-dopingdose.Weproposethatthe400—470nmPLbandoriginatesfrommultipleluminescencecenters,andthe730-and780-nmPLpeaksareascribedtotheSi=OandGeOluminescencecenters.
简介:Weexperimentallydemonstratea4-Gb/sradio-over-fiber(RoF)systemwith40-kmfiberand2-mwirelessdistancedownstreamat100-GHzcarrier.Tothebestofourknowledge,thisisforthefirsttimeinChinatorealizeopticalwirelesslinkat100GHz.Inthisletter,simpleintensitymodulatorwithdirectdetector(IM-DD)modulationisemployedandopticalpowerpenaltyafter40-kmsinglemodefiber(SMF)-28and2-mairlinkis3.2dBwithbit-error-rate(BER)at1×109.
简介:SIP-adusWorkshop是自动驾驶领域代表世界先进水平的大会,由日本跨部委战略革新促进计划SIP自动驾驶系统推进委员会和日本内阁府科学技术创新会议共同主办,其内容体现了自动驾驶以及相关领域的理论、技术及应用的最新进展。首先本文对第5届SIP-adus大会(SIP-adusWorkshop2018)概况进行了描述,其次通过对大会录用论文进行分析,探讨了当前学界和产业界在自动驾驶及相关领域方面的核心技术(区域活动与现场运行试验(FOT)、动态地图、网联汽车、网络安全、影响评估、下一代运输、人为因素)上的研究热点,并阐述上述理论及技术的应用情况。最后,总结V2X理论研究和应用的特点,并展望未来发展趋势。