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Carbon emission quantification and reduction in pavement use phase:A review

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Journal of Traffic and Transportation Engineering(English Edition) 2024年第1期11卷 69-91页

作者： linjie Zhu Jin Li Feipeng Xiao Key Laboratory of Road and Traffic Engineering of Ministry of Education Tongji UniversityShanghai 201804China

The carbon emissions arising from road pavement infrastructures have emerged as critical issue in recent *** life cycle of a pavement can be divided into five phases,namely raw materials and production,construction,use,maintenance and end of *** the use phase generates the highest carbon emissions throughout the pavement's life cycle,it is usually neglected in most pavement life cycle assessment(LCA)studies due to its complexity and ***,this review selected 126 relevant references,focuses on quantification methods,influential factors and reduction technologies of carbon emissions in pavement use *** the carbon accounting approached,the LCA approach,remains the most widely used for evaluating the environmental impact of ***,the primary influential factors on the use phase'carbon emission include pavement-vehicle interaction primarily affected by pavement roughness,pavement albedo and climate *** influential factors above indirectly cause changes in carbon emissions by influencing the pavement performance and subsequent vehicle ***,the review surveys carbon emission reduction technologies during pavement use phase,focusing mainly on reducing pavement rolling resistance and constructing cool *** pavements and permeable pavements are the most widely used cool pavement ***,the aspects involved in this paper hold significant promise for quantifying and reducing carbon emissions in the pavement use phase.

关键词： Pavement Carbon emission Life cycle assessment Use phase Emission reduction

All-optical wavelength converter using a microdisk resonator integrated with p-n junctions

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Chinese Science Bulletin 2014年第22期59卷 2709-2716页

作者： linjie zhou Jingya Xie Jianping Chen State Key Laboratory of Advanced Optical Communication Systems and Networks Department of Electronic EngineeringShanghai Jiao Tong University

We explore all-optical wavelength conversion in a microdisk resonator integrated with interleaved p-n *** simulation based on temporal coupled mode theory is performed to study the free-carrier dynamics inside the *** reveals that the detuning of pump and probe frequencies and the carrier lifetime have a significant effect on the device *** result confirms that the conversion speed can be considerably improved by applying a reverse bias on the p-n *** conversion at 10 Gb/s data rate is achieved with a pump power of 5.41 dBm and a bias voltage of-6 V.

关键词：全光波长转换器 pn结谐振器集成载流子寿命数据传输速率耦合模理论子动力学

Optical generation of UWB pulses utilizing Fano resonance modulation

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Frontiers of Optoelectronics 2021年第4期14卷 426-437页

作者： Zhe XU Yanyang zhou Shuhuang CHEN Liangjun LU Gangqiang zhou Jianping CHEN linjie zhou State Key Laboratory of Advanced Optical Communication Systems and Networks Shanghai Key Laboratory of Navigation and Location ServicesShanghai Institute for Advanced Communication and Data ScienceDepartment of Electronic EngineeringShanghai Jiao Tong UniversityShanghai 200240China

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 *** proper operating conditions,the device can produce Fano resonances with a peak-to-valley extinction ratio of above 20 *** monocycle and doublet signals with picosecond pulse widths are produced when the microring resonator is modulated by square and Gaussian electrical pulses,*** our Fano resonance modulator on silicon photonics,it is promising to foresee versatile on-chip microwave signal generation.

关键词： ultra-wideband(UWB)generation Fano resonance intensity modulation integrated silicon modulator

Application of SOl microring coupling modulation in microwave photonic phase shifters

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Frontiers of Optoelectronics 2016年第3期9卷 483-488页

作者： Rui YANG linjie zhou Minjuan WANG Haike ZHU Jianping CHEN State Key Laboratory of Advanced Optical Communication Systems and Networks Department of Electronic Engineering Shanghai Jiao Tong University Shanghai 200240 China

Phase shifter is one of the key devices in microwave photonics. We report a silicon microring resonator with coupling modulation to realize microwave phase shift. With coupling tuning of the Mach-Zehnder interferometer （MZI） coupler to change the resonator from under-coupling to over-coupling, the device can realize a π phase shift on the incoming microwave signal with a frequency up to 25 GHz. The device can also realize 2.5π continuous phase tuning by manipulating the three DC bias voltages applied on the MZI coupler.

关键词： ring resonator phase shifter microwave photonics

4×4 nonblocking optical switch fabric based on cascaded multimode interferometers

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Photonics Research 2016年第1期4卷 21-26页

作者： Zuxiang Li linjie zhou Liangjun Lu Shuoyi Zhao Dong Li Jianping Chen State Key Laboratory of Advanced Optical Communication Systems and Networks Department of ElectronicEngineering Shanghai Jiao Tong University

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.

关键词： nonblocking optical switch fabric based on cascaded multimode interferometers OOK Figure

Modeling and optimization of a single-drive push–pull silicon Mach–Zehnder modulator

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Photonics Research 2016年第4期4卷 153-161页

作者： Yanyang zhou linjie zhou Haike Zhu Chiyan Wong Yida Wen Lei Liu Xinwan Li Jianping Chen State Key Laboratory of Advanced Optical Communication Systems and Networks Department of Electronic Engineering Shanghai Jiao Tong University Transmission Technology Research Department Huawei Technology Co.Ltd.

We present an equivalent circuit model for a silicon carrier-depletion single-drive push–pull Mach–Zehnder modulator(MZM)with its traveling wave electrode made of coplanar strip *** particular,the partialcapacitance technique and conformal mapping are used to derive the capacitance associated with each *** PN junction is accurately modeled with the fringe capacitances taken into *** circuit model is validated by comparing the calculations with the simulation *** this model,we analyze the effect of several key parameters on the modulator performance to optimize the *** results of MZMs confirm the theoretical analysis.A 56 Gb/s on–off keying modulation and a 40 Gb/s binary phase-shift keying modulation are achieved using the optimized modulator.

关键词： mode MZM Zehnder modulator pull silicon Mach Modeling and optimization of a single-drive push

16 × 16 silicon Mach–Zehnder interferometer switch actuated with waveguide microheaters

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Photonics Research 2016年第5期4卷 202-207页

作者： Shuoyi Zhao Liangjun Lu linjie zhou Dong Li Zhanzhi Guo Jianping Chen State Key Laboratory of Advanced Optical Communication Systems and Networks Department of Electronic Engineering Shanghai Jiao Tong University

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.

关键词： MZI Zehnder interferometer switch actuated with waveguide microheaters silicon Mach

Microwave frequency upconversion employing a coupling-modulated ring resonator

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Photonics Research 2017年第6期5卷 208-213页

作者： YIMING ZHONG linjie zhou YANYANG zhou YUJIE XIA SIQI LIU LIANGJUN LU JIANPING CHEN XINGJUN WANG Shanghai Institute for Advanced Communication and Data Science State Key Laboratory of Advanced Optical Communication Systems and Networks Department of Electronic Engineering Shanghai Jiao Tong University State Key Laboratory of Advanced Optical Communication Systems and Networks School of Electronics Engineering and Computer SciencePeking University

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 *** 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 *** 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.

关键词： Microwave frequency upconversion employing a coupling-modulated ring resonator MZI

Large-Scale Multi-Objective Optimization Algorithm Based on Weighted Overlapping Grouping of Decision Variables

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Computer Modeling in Engineering & Sciences 2024年第7期140卷 363-383页

作者： Liang Chen Jingbo Zhang linjie Wu Xingjuan Cai Yubin Xu Shanxi Key Laboratory of Big Data Analysis and Parallel Computing Taiyuan University of Science and TechnologyTaiyuan030024China School of State Key Laboratory of Novel Software Technology Nanjing UniversityNanjing210008China

The large-scale multi-objective optimization algorithm(LSMOA),based on the grouping of decision variables,is an advanced method for handling high-dimensional decision ***,in practical problems,the interaction among decision variables is intricate,leading to large group sizes and suboptimal optimization effects;hence a large-scale multi-objective optimization algorithm based on weighted overlapping grouping of decision variables(MOEAWOD)is proposed in this ***,the decision variables are perturbed and categorized into convergence and diversity variables;subsequently,the convergence variables are subdivided into groups based on the interactions among different decision *** the size of a group surpasses the set threshold,that group undergoes a process of weighting and overlapping ***,the interaction strength is evaluated based on the interaction frequency and number of objectives among various decision *** decision variable with the highest interaction in the group is identified and disregarded,and the remaining variables are then reclassified into ***,the decision variable with the strongest interaction is added to each *** minimizes the interactivity between different groups and maximizes the interactivity of decision variables within groups,which contributed to the optimized direction of convergence and diversity exploration with different *** was subjected to testing on 18 benchmark large-scale optimization problems,and the experimental results demonstrate the effectiveness of our *** with the other algorithms,our method is still at an advantage.

关键词： Decision variable grouping large-scale multi-objective optimization algorithms weighted overlapping grouping direction-guided evolution