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Personal information
教授 博士生导师
所在单位：集成电路学院
学历：研究生(博士)毕业
学位：博士学位
毕业院校：华中科技大学
学科：微电子学与固体电子学曾获荣誉：
2024 华中科技大学青年五四奖章
2022 华为奥林帕斯先锋奖
2020 湖北省技术发明一等奖（排名第2）
2013 湖北省年度“十大科技事件”
2013 湖北省优秀博士学位论文
2014 湖北省优秀学士学位论文指导教师
2015 华中科技大学教师教学竞赛二等奖
2017 华中科技大学光学与电子信息学院“我最喜爱的教师班主任“
2020 华中科技大学光学与电子信息学院突出贡献一等奖
论文类型：期刊论文
第一作者：何强
通讯作者：yi,wang,童浩
合写作者：缪向水,banguoxun,卢轶韬,刘志远
发表刊物：iScience
所属单位：华中科技大学
学科门类：工学
一级学科：电子科学与技术
文献类型：J
DOI码：10.1016/j.isci.2022.104375
发表时间：4472-09-01
摘要：All-optical switches show great potential to overcome the speed and power consumption limitations of electrical switching. Owing to its nonvolatile and superb cycle abilities, phase-change materials enabled all-optical switch (PC-AOS) is attracting
much attention. However, realizing low-loss and ultrafast switching remains a challenge, because previous PC-AOS are mostly based on plasmonic metamaterials. The
high thermal conductance of metallic materials disturbs the thermal accumulation
for phase transition, and eventually decreases the switching speed to tens of nanoseconds. Here, we demonstrate an ultrafast switching (4.5 ps) and low-loss (2.8 dB)
all-optical switch based on all-dielectric structure consisting of Ge2Sb2Te5 and photonic crystals. Its switching speed is approximately ten thousand times faster than
the plasmonic one. A 5.4 dB on-off ratio at 1550 nm has been experimentally
achieved. We believe that the proposed all-dielectric optical switch will accelerate
the progress of ultrafast and energy-efficient photonic devices and systems.
发布期刊链接：https://www.sciencedirect.com/science/article/pii/S2589004222006460#abs0015