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| 1 | Graphene-based all-optical modulators显示文摘All-optical devices,which are utilized to process optical signals without electro-optical conversion,play an essential role in the next generation ultrafast,ultralow power-consumption optical information processing systems.To satisfy the performance requirement,nonlinear optical materials that are associated with fast response,high nonlinearity,broad wavelength operation,low optical loss,low fabrication cost,and integration compatibility with optical components are required.Graphene is a promising candidate,particularly considering its electrically or optically tunable optical properties,ultrafast large nonlinearity,and high integration compatibility with various nanostructures.Thus far,three all-optical modulation systems utilize graphene,namely free-space modulators,fiber-based modulators,and on-chip modulators.This paper aims to provide a broad view of state-of-the-art researches on the graphene-based all-optical modulation systems.The performances of different devices are reviewed and compared to present a comprehensive analysis and perspective of graphene-based all-optical modulation devices. | Chuyu ZHONG Junying LI Hongtao LIN | 2020 | Frontiers of Optoelectronics2020，13，2： | 2 |
| 2 | A novel compact miniaturized wideband microstrip bandpass filters with dual-mode ring resonators显示文摘 | CHEN Chuyu HSU Chengying LIN SungFong | 2005 | Microwave and Optical Technology Letters2005，45，4： | 1 |
| 3 | Electrically programmable phase-change photonic memory for optical neural networks with nanoseconds in situ training capability显示文摘Optical neural networks (ONNs), enabling low latency and high parallel data processing withoutelectromagnetic interference, have become a viable player for fast and energy-efficient processing andcalculation to meet the increasing demand for hash rate. Photonic memories employing nonvolatile phase-change materials could achieve zero static power consumption, low thermal cross talk, large-scale, andhigh-energy-efficient photonic neural networks. Nevertheless, the switching speed and dynamic energyconsumption of phase-change material-based photonic memories make them inapplicable for in situ training.Here, by integrating a patch of phase change thin film with a PIN-diode-embedded microring resonator,a bifunctional photonic memory enabling both 5-bit storage and nanoseconds volatile modulation wasdemonstrated. For the first time, a concept is presented for electrically programmable phase-changematerial-driven photonic memory integrated with nanosecond modulation to allow fast in situ training and zerostatic power consumption data processing in ONNs. ONNs with an optical convolution kernel constructedby our photonic memory theoretically achieved an accuracy of predictions higher than 95% when testedby the MNIST handwritten digit database. This provides a feasible solution to constructing large-scalenonvolatile ONNs with high-speed in situ training capability. | Maoliang Wei Junying Li Zequn Chen Bo Tang Zhiqi Jia Peng Zhang Kunhao Lei Kai Xu Jianghong Wu Chuyu Zhong Hui Ma Yuting Ye Jialing Jian Chunlei Sun Ruonan Liu Ying Sun Wei.E.I.Sha Xiaoyong Hu Jianyi Yang Lan Li Hongtao Lin | 2023 | Advanced Photonics2023，5，4： | 0 |
| 4 | Polycomb Repressive Complex 2-Mediated H3K27 Trimethylation Is Required for Pathogenicity in Magnaporthe oryzae显示文摘Polycomb repressive complex 2(PRC2)contributes to catalyze the methylation of histone H3 at lysine 27 and plays vital roles in transcriptional silencing and growth development in various organisms.In Magnaporthe oryzae,histone H3K27 is found to associate with altered transcription of in planta induced genes.However,it is still unknown whether and how H3K27me3 modification is involved in pathogenicity to rice and stress response.In this study,we found that core subunits of PRC2,Kmt6-Suz12-Eed,were required for fungal pathogenicity to rice in M.oryzae.Kmt6-Suz12-Eed localized in the nuclei and was necessary for the establishment of H3K27me3 modification.With ChIP-seq analysis,9.0%of genome regions enriched with H3K27me3 occupancy,which corresponded to 1033 genes in M.oryzae.Furthermore,deletion of Kmt6,Suz12 or Eed altered genome-wide transcriptional expression,while the de-repression genes in theΔkmt6 strain were highly associated with H3K27me3 occupancy.Notably,plenty of genes which encode effectors and secreted enzymes,secondary metabolite synthesis genes,and cell wall stress-responsive genes were directly occupied with H3K27me3 modification and de-repression in theΔkmt6 strain.These results elaborately explained how PRC2 was required for pathogenicity,which is closely related to effector modulated host immunity and host environment adaption. | WU Zhongling QIU Jiehua SHI Huanbin LIN Chuyu YUE Jiangnan LIU Zhiquan XIE Wei Naweed INAQVI KOU Yanjun TAO Zeng | 2022 | Rice science2022，29，4： | 0 |
| 5 | Free-spectral-range-free filters with ultrawide tunability across the S+C+L band显示文摘Optical filters are essential parts of advanced optical communication and sensing systems.Among them,the ones with an ultrawide free spectral range(FSR)are especially critical.They are promising to provide access to numerous wavelength channels highly desired for large-capacity optical transmission and multipoint multiparameter sensing.Present schemes for wide-FSR filters either suffer from limited cavity length or poor fabrication tolerance or impose an additional active-tuning control requirement.We theoretically and experimentally demonstrate a filter that features FSR-free operation capability,subnanometer optical bandwidth,and acceptable fabrication tolerance.Only one single deep dip within a record-large waveband(S+C+L band)is observed by appropriately designing a side-coupled Bragg-grating-assisted Fabry–Perot filter,which has been applied as the basic sensing unit for both the refractive index and temperature measurement.Five such basic units are also cascaded in series to demonstrate a multichannel filter.This work provides a new insight to design FSR-free filters and opens up a possibility of flexible large-capacity integration using more wavelength channels,which will greatly advance integrated photonics in optical communication and sensing. | CHUNLEI SUN CHUYU ZHONG MAOLIANG WEI HUI MA YE LUO ZEQUN CHEN RENJIE TANG JIALING JIAN HONGTAO LIN LAN LI | 2021 | Photonics Research2021，9，6： | 0 |
| 6 | Retrospective Analysis of the Duration of Hospitalization of Imported Patients Infected with SARS-CoV-2 in Guangzhou, 2021显示文摘The pandemic of coronavirus disease 2019 is“not over,”in fact,the“dynamic clearing”policy for SARS-CoV-2 control and prevention in China has been firmly enforced.This study aimed to analyze the clinical symptoms and dynamic viral RNA changes in 2021 at Guangzhou Eighth People’s Hospital.This study showed that 31.4%of the patients(695/2212)tested negative for viral RNA from admission to the final release from quarantine.Of all negative cases,86.5%(601/695)remained in the hospital for no more than 5 days and were asymptomatic or mild.Among the remaining 402 patients who stayed for no more than 5 days,76.4%(307/402)were viral RNA retest positive during the isolation stage.However,96.4%of the peak viral RNA(296/307)was over Ct=33 cycles during the isolation stage. | Zhiwei Xie Guofang Tang Lu Li Jingrong Shi Qingxin Gan Xiaowen Zheng Jingyan Tang Huimin Zeng Chuyu Zhang Sisi Cheni Jianping Cui Zishi Lin Lihua Lin Youxia Li Jinxin Liu Feng Li Fengyu Hui Xiaoping Tang Xilong Deng | 2023 | Infectious Diseases & Immunity2023，3，1： | 0 |
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