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| 1 | 16 × 16 silicon Mach–Zehnder interferometer switch actuated with waveguide microheaters显示文摘We experimentally demonstrate a 16 × 16 reconfigurably nonblocking optical switch fabric using a Benes architecture. The switch fabric consists of 56 2 × 2 Mach–Zehnder interferometer based elementary switches, with each integrated with a pair of waveguide microheaters. The average on-chip insertion loss is ~5.2 dB for both of the 'all-cross' and the 'all-bar' states, with a loss variation of 1 dB over all routing paths. The cross talk for all switching states is better than -30 d B. The switching time of the switch element is about 22 μs. The switching functionality is verified by transmission of a 40 Gb∕s quadrature phase-shift keying optical signal. | Shuoyi Zhao Liangjun Lu Linjie Zhou Dong Li Zhanzhi Guo Jianping Chen | 2016 | Photonics Research2016，4，5： | 7 |
| 2 | 4×4 nonblocking optical switch fabric based on cascaded multimode interferometers显示文摘We experimentally demonstrate a 4 × 4 nonblocking silicon thermo-optic(TO) switch fabric consisting of three stages of tunable generalized Mach–Zehnder interferometers. All 24 routing states for nonblocking switching are characterized. The device's footprint is 4.6 mm × 1.0 mm. Measurements show that the worst cross talk of all switching states is-7.2 dB. The on-chip insertion loss is in the range of 3.7–13.1 dB. The average TO switching power consumption is 104.8 mW. | Zuxiang Li Linjie Zhou Liangjun Lu Shuoyi Zhao Dong Li Jianping Chen | 2016 | Photonics Research2016，4，1： | 2 |
| 3 | Nonvolatile waveguide transmission tuning with electrically-driven ultra-small GST phase-change material显示文摘Low-power reconfigurable optical circuits are highly demanded to satisfy a variety of different applications. Conventional electro-optic and thermo-optic refractive index tuning methods in silicon photonics are not suitable for reconfiguration of optical circuits due to their high static power consumption and volatility. We propose and demonstrate a nonvolatile tuning method by utilizing the reversible phase change property of GST integrated on top of the silicon waveguide. The phase change is enabled by applying electrical pulses to the lm-sized GST active region in a sandwich structure. The experimental results show that the optical transmission of the silicon waveguide can be tuned by controlling the phase state of GST. | Hanyu Zhang Linjie Zhou Jian Xu Ningning Wang Hao Hu Liangjun Lu B. M. A. Rahman Jianping Chen | 2019 | Science Bulletin2019，64，11： | 2 |
| 4 | Agrobacterium tumefaciens-mediated transformation of modern rose(Rosa hybrida)using leaf-derived embryogenic callus显示文摘Rose(Rosa hybrida)is widely used for cut flowers and as garden plants.Stable and efficient transformation system is required for functional genomics of rose.Here,we established an efficient transformation method for rose using Agrobacterium tumefaciens-mediated transformation of embryogenic callus.Expanding rose leaves were used as explants to induce somatic embryos,which were subjected to transformation with A.tumefaciens strain GV3101 using Green Fluorescence Protein(GFP)as a marker gene.It took about 8 months to generate transgenic shoots from embryogenic callus.PCR,RT-PCR,Southern and Western blotting,as well as stereoscopic fluorescence microscopy analysis demonstrated that GFP transgenes integrated stably into the rose genome.According to our data,a transformation efficiency of up to 6%can be achieved by following this optimized protocol. | Guoqin Liu Yuan Yuan Hui Jiang Ying Bao Guogui Ning Liangjun Zhao Xiaofeng Zhou Hougao Zhou Junping Gao Nan Ma | 2021 | Horticultural Plant Journal2021，7，4： | 1 |
| 5 | Inhibition of aberrant Hif1αactivation delays intervertebral disc degeneration in adult mice显示文摘The intervertebral disc(IVD) is the largest avascular tissue. Hypoxia-inducible factors(HIFs) play essential roles in regulating cellular adaptation in the IVD under physiological conditions. Disc degeneration disease(DDD) is one of the leading causes of disability, and current therapies are ineffective. This study sought to explore the role of HIFs in DDD pathogenesis in mice. The findings of this study showed that among HIF family members, Hif1α was significantly upregulated in cartilaginous endplate(EP) and annulus fibrosus(AF) tissues from human DDD patients and two mouse models of DDD compared with controls. Conditional deletion of the E3 ubiquitin ligase Vhl in EP and AF tissues of adult mice resulted in upregulated Hif1α expression and age-dependent IVD degeneration. Aberrant Hif1α activation enhanced glycolytic metabolism and suppressed mitochondrial function. On the other hand, genetic ablation of the Hif1α gene delayed DDD pathogenesis in Vhl-deficient mice. Administration of 2-methoxyestradiol(2ME2), a selective Hif1α inhibitor, attenuated experimental IVD degeneration in mice. The findings of this study show that aberrant Hif1α activation in EP and AF tissues induces pathological changes in DDD, implying that inhibition of aberrant Hif1α activity is a potential therapeutic strategy for DDD. | Zuqiang Wang Hangang Chen Qiaoyan Tan Junlan Huang Siru Zhou Fengtao Luo Dali Zhang Jing Yang Can Li Bo Chen Xianding Sun Liang Kuang Wanling Jiang Zhenhong Ni Quan Wang Shuai Chen Xiaolan Du Di Chen Chuxia Deng Liangjun Yin Lin Chen Yangli Xie | 2022 | Bone Research2022，10，1： | 1 |
| 6 | MXene and MXene-based materials for lithium-sulfur batteries显示文摘Lithium-sulfur(Li–S)batteries are regarded as potential alternatives to lithium-ion batteries due to their extremely high theoretical energy density.Nevertheless,Li–S batteries still suffer from low coulombic efficiency,low sulfur utilization,and poor cycling life,which hinder their further applications.To obtain ideal Li–S cells,intensive work has been dedicated to improve the conductivity of the electrode,inhibiting the shuttle of lithium polysulfides,and promoting the redox of sulfur.Two-dimensional transition metal carbides,nitrides or carbonitrides,also known as MXenes,attracting significant research interest in Li–S batteries due to their high conductivity,abundant active sites,layered structure and adjustable surface chemistry.In this review,we summarize the partial etching methods of MXenes with different surface terminations,the role of MXenes in Li–S batteries and MXene-based composites designed for Li–S batteries based on interfacial chemistry and interlayer structure.In the end,we also propose the perspectives of MXenes for Li–S batteries. | Youquan Zhang Cheng Ma Weitao He Chunxiao Zhang Liangjun Zhou Gao Wang Weifeng Wei | 2021 | Progress in Natural Science:Materials International2021，31，4： | 1 |
| 7 | Preparation and Characteristic Identification of Monoclonal Antibody Against Sulfamethazine显示文摘Two artificial antigens were synthesized successfully by diazotizing method, sulfamethazine(SM2)-human serum albumin (HSA) was used for the immunogen, and SM2-ovalbumin(OVA) was used for the coating antigen. The coupled reaction was successful by confirmation of the ultraviolet scanning spectrometer, and the conjugation ratio of SM2 with HSA and OVA was 9:1 and 15:1, respectively. Using cell-fusion and limiting dilution method to reclone 5 times to get 3 hybridoma strains, which could stably secret monoclonal antibody (Mab), named CB7, BC4 and BB12. The subtype of BC4 Mab was IgG1 and chain, the molecular weight was 162 ku, the numbers of chromosomal were about 90, the affinity constant was 6.1×1012 M-1. No cross reactivity was seen between the Mab and the other 4 sulfonamides, as well as the 2 carries proteins. The Mab antibody had excellent stability. | DING Liangjun LI Jichang FU Rui ZHOU Yanjun HUO Guicheng | 2006 | Journal of Northeast Agricultural University(English Edition)2006，13，2： | 1 |
| 8 | Bone morphogenetic protein 2 inhibits the proliferation and growth ofhuman colorectal cancer cells显示文摘 | Yunyuan Zhang Xian Chen Min Qiao Bing-Qiang Zhang Ning Wang Zhonglin Zhang Zhan Liao Liyi Zeng Youlin Deng Fang Deng Junhui Zhang Liangjun Yin Wei Liu Qian Zhang Zhengjian Ya Jixing Ye Zhongliang Wang Lan Zhou Hue Luu Rex Haydon Tong-Chuan He Hongyu Zhang | 2014 | Oncology Reports2014，，3： | 1 |
| 9 | Microwave frequency upconversion employing a coupling-modulated ring resonator显示文摘We present a method to generate a frequency-doubled microwave signal by employing a coupling-modulated ring resonator. Critical coupling is achieved when the resonator intrinsic loss is perfectly balanced by the external coupling enabled by a Mach–Zehnder interferometer coupler. The high suppression of the carrier leads to a clean two-tone optical signal with the frequency interval two times larger than that of the input microwave frequency.The beating of the two-tone signal at a photodiode generates the frequency upconverted microwave signal.A theoretical model is established to analyze the modulation process and the microwave signal generation.Experimental results show that the electrical harmonic suppression ratio is around ~20 dB(29 dB) for an input microwave signal with 5 dBm(10 dBm) power. | YIMING ZHONG LINJIE ZHOU YANYANG ZHOU YUJIE XIA SIQI LIU LIANGJUN LU JIANPING CHEN XINGJUN WANG | 2017 | Photonics Research2017，5，6： | 1 |
| 10 | Continuous-variable quantum key distribution with on-chip light sources显示文摘Integrated quantum key distribution(QKD)systems based on photonic chips have high scalability and stability,and are promising for further construction of global quantum communications networks.On-chip quantum light sources are a critical component of a fully integrated QKD system;especially a continuous-variable QKD(CVQKD)system based on coherent detection,which has extremely high requirements for the light sources.Here,for what we believe is the first time,we designed and fabricated two on-chip tunable lasers for CV-QKD,and demonstrated a high-performance system based on these sources.Because of the high output power,fine tunability,and narrow linewidth,the involved on-chip lasers guarantee the accurate shot-noise-limited detection of quantum signals,center wavelength alignment of nonhomologous lasers,and suppression of untrusted excess noise.The system’s secret key rate can reach 0.75 Mb/s at a 50 km fiber distance,and the secure transmission distance can exceed 100 km.Our results mark a breakthrough toward building a fully integrated CV-QKD,and pave the way for a reliable and efficient terrestrial quantum-secure metropolitan area network. | LANG LI TAO WANG XINHANG LI PENG HUANG YUYAO GUO LIANGJUN LU LINJIE ZHOU GUIHUA ZENG | 2023 | Photonics Research2023，11，4： | 0 |
| 11 | Low temperature sensitivity on-chip Fouriertransform spectrometer based on dual-layer Si_(3)N_(4)spiral waveguides显示文摘On-chip Fourier-transform spectrometers(FTSs)based on Mach–Zehnder interferometer(MZI)arrays suffer from severe central wavelength and fringe contrast variation due to fabrication errors.Even though a calibration matrix can be employed to correctly retrieve the input spectra,environmental temperature variation greatly degrades the retrieving performance.In this paper,we devise a dual-layer Si_(3)N_(4) waveguide interferometer to reduce the temperature sensitivity.The beating of the even and odd supermodes in the dual-layer waveguide generates periodic intensity fluctuations in the spectrum.Since these two modes have similar modal profiles,their thermal sensitivity and propagation loss are relatively balanced,leading to a low temperature sensitivity and a high interference extinction ratio.We designed and fabricated a passive FTS based on a 32-channel dual-layer Si_(3)N_(4) waveguide array.Experimental results show that the temperature sensitivity is reduced to 10 pm/°C,which is almost half that of single-layer Si_(3)N_(4) MZI-based FTSs.With this chip,we accurately reconstructed various types of optical spectra,including single and two sparse laser lines,and broadband optical spectra.Our method can fit a wide wavelength range,which is a promising technology to improve the practical applications of on-chip FTSs. | LIANGJUN LU HONGYI ZHANG XIN LI JIANPING CHEN LINJIE ZHOU | 2023 | Photonics Research2023，11，4： | 0 |
| 12 | Ultra-low-loss multi-layer 8×8 microring optical switch显示文摘Microring-based optical switches are promising for wavelength-selective switching with the merits of compact size and low power consumption.However,the large insertion loss,the high fabrication,and the temperature sensitivity hinder the scalability of silicon microring optical switch fabrics.In this paper,we utilize a three-dimensional(3D)microring-based optical switch element(SE)on a multi-layer Si_(3)N_(4)-on-SOI platform to realize highperformance large-scale optical switch fabrics.The 3D microring-based SE consists of a Si∕Si_(3)N_(4) waveguide overpass crossing in the bottom and the top layers,and Si_(3)N_(4) dual-coupled microring resonators(MRRs)in the middle layer.The switch is calibration-free and has low insertion loss.With the 3D microring-based SEs,we implement an 8×8 crossbar optical switch fabric.As the resonance wavelengths of all SEs are well aligned,only one SE needs to be turned on in each routing path,which greatly reduces the complexity of the switch control.The optical transmission spectra show a box-like shape,with a passband width of~69 GHz and an average on-state loss of~0.37 dB.The chip has a record-low on-chip insertion loss of 0.52-2.66 dB.We also implement a non-duplicate polarization-diversity optical switch by using the bidirectional transmission characteristics of the crossbar architecture,which is highly favorable for practical applications.100 Gb/s dual-polarization quadrature-phase-shift-keying(DP-QPSK)signal is transmitted through the switch without significant degradation.To the best of our knowledge,this is the first time that 3D MRRs have been used to build highly scalable polarization-diversity optical switch fabrics. | XIN LI WEI GAO LIANGJUN LU JIANPING CHEN LINJIE ZHOU | 2023 | Photonics Research2023，11，5： | 0 |
| 13 | Optical generation of UWB pulses utilizing Fano resonance modulation显示文摘In this paper,we reported an integrated method to generate ultra-wideband(UWB)pulses of different orders based on a reconfigurable silicon micro-ring resonator-coupled Mach–Zehnder interferometer.Under proper operating conditions,the device can produce Fano resonances with a peak-to-valley extinction ratio of above 20 dB.UWB monocycle and doublet signals with picosecond pulse widths are produced when the microring resonator is modulated by square and Gaussian electrical pulses,respectively.With our Fano resonance modulator on silicon photonics,it is promising to foresee versatile on-chip microwave signal generation. | Zhe XU Yanyang ZHOU Shuhuang CHEN Liangjun LU Gangqiang ZHOU Jianping CHEN Linjie ZHOU | 2021 | Frontiers of Optoelectronics2021，14，4： | 0 |
| 14 | Numerical Investigation of the Superimposed Effects on Stator Wake Oscillation in an Axial-radial Combined Compressor显示文摘The superimposed influences of the blade rows in a multistage compressor are important because different matches of upstream and downstream blades can result in significant differences in the stator wake oscillation. Numerical investigation of the axial stator wake oscillation, which is affected upstream by the axial rotor and downstream by the radial rotor, was performed in an axial-radial combined compressor. Many configurations with different blade numbers and locations, which influence axial stator wake oscillation were investigated. When rotors have equal blade numbers, the axial stator wake oscillates periodically versus time within time T(moving blade passing 1/3 revolution). In contrast, stator wake oscillates irregularly within T when rotors have different blade numbers. A model-split subtraction method is presented in order to separate the influences of the individual blade rows on the wake oscillation of the axial stator. Analysis from the rotor-stator configuration showed that the unsteady flow angle fluctuation response is caused by the upstream rotor. For the rotor-stator-rotor configuration, the unsteady flow angle fluctuations are influenced by upand downstream blade rows. With the model-split subtraction method, the upand downstream influences on the flow angle fluctuation could be clearly separated and quantified. Low amplitudes could be observed when the influences from upand downstream moving rows were superimposed with the 'positive peaknegative peak' type wave. Clocking investigations were carried out to change the relative superimposed phase of influences from the surrounding blade rows in order to modulate the amplitudes of the axial stator wake oscillation. However, the amplitudes did not reach the maximum when they were superimposed with 'positive peak-positive peak' type wave due to the impact of the interaction between the two moving blade rows. | ZHAO Ben YANG Ce HU Liangjun ZHOU Mi ZHANG Jizhong | 2014 | Journal of Thermal Science2014，23，1： | 0 |
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