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2019 International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD)最新文献

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Drift-diffusion simulations of thermally activated delayed fluorescence OLEDs 热激活延迟荧光oled的漂移-扩散模拟
2019 International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD) Pub Date : 2019-07-01 DOI: 10.1109/NUSOD.2019.8806832
Daniele Rossi, D. Palazzo, M. Maur, A. D. Carlo
{"title":"Drift-diffusion simulations of thermally activated delayed fluorescence OLEDs","authors":"Daniele Rossi, D. Palazzo, M. Maur, A. D. Carlo","doi":"10.1109/NUSOD.2019.8806832","DOIUrl":"https://doi.org/10.1109/NUSOD.2019.8806832","url":null,"abstract":"In this work we present drift-diffusion simulations of a blue-emitting thermally activated delayed fluorescence (TADF) OLED. We exploited the ability of the multi-particle drift-diffusion model to explicitly calculate the charge transport for the different sub-populations in the TADF emitter, including singlet and triplet exciton states. The inclusion of proper models for the band-to-band transitions, for bimolecular recombination mechanisms and for inter-system crossing allows to investigate the device operation under different conditions. Moreover, it provides insight into the role of triplet-triplet annihilation and triplet-polaron quenching for the roll-off in internal quantum efficiency, which typically occurs in TADF OLEDs.","PeriodicalId":369769,"journal":{"name":"2019 International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD)","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123834556","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Energy Efficiency Analysis of GaN-based Superluminescent Diodes 氮化镓基超发光二极管的能效分析
2019 International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD) Pub Date : 2019-07-01 DOI: 10.1109/NUSOD.2019.8807089
J. Piprek
{"title":"Energy Efficiency Analysis of GaN-based Superluminescent Diodes","authors":"J. Piprek","doi":"10.1109/NUSOD.2019.8807089","DOIUrl":"https://doi.org/10.1109/NUSOD.2019.8807089","url":null,"abstract":"Gallium-nitride-based superluminescent light-emitting diodes (SLEDs) are attractive light sources for augmented or virtual reality devices and other applications. However, the energy efficiency of SLEDs is still far below the peak values reported for LEDs and laser diodes. Utilizing advanced numerical device simulation, this paper investigates the internal physical processes that cause the low SLED efficiency.","PeriodicalId":369769,"journal":{"name":"2019 International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125168065","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Freeform inverse design in photonics by re-thinking the question 重新思考光子学中的自由反设计问题
2019 International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD) Pub Date : 2019-07-01 DOI: 10.1109/NUSOD.2019.8806880
Zin Lin, Steven G. Johnson
{"title":"Freeform inverse design in photonics by re-thinking the question","authors":"Zin Lin, Steven G. Johnson","doi":"10.1109/NUSOD.2019.8806880","DOIUrl":"https://doi.org/10.1109/NUSOD.2019.8806880","url":null,"abstract":"Recent developments in computational freeform inverse design have provided a fertile landscape of structures and topologies for nanophotonics. However, simply dumping millions of parameters into a simulation can easily lead to intractable computational problems. Fortunately, a given engineering problem often admits many different mathematical formulations, and by carefully matching the formulation to the available electromagnetic solvers and optimization algorithms one can set the stage for extraordinarily flexible automated design. In this talk, we will show that, with careful consideration and reformulation of the design problem, powerful inverse design techniques can be successfully applied to a multitude of interesting problems with rich physical behavior, ranging from light confinement in nonlinear multi-resonant cavities, robust bandgap maximization in 3D photonic crystals to beam-forming and manipulation through multi-layered metasurfaces.","PeriodicalId":369769,"journal":{"name":"2019 International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117285784","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Design and Simulation of a Si3N4 Sub-GHz Resolution Integrated Micro-Spectrometer Si3N4亚ghz分辨率集成微型光谱仪的设计与仿真
2019 International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD) Pub Date : 2019-07-01 DOI: 10.1109/NUSOD.2019.8806837
Houman Ghorbani, R. Tewari, Mohammad M. Rad, E. Bernier, T. Hall
{"title":"Design and Simulation of a Si3N4 Sub-GHz Resolution Integrated Micro-Spectrometer","authors":"Houman Ghorbani, R. Tewari, Mohammad M. Rad, E. Bernier, T. Hall","doi":"10.1109/NUSOD.2019.8806837","DOIUrl":"https://doi.org/10.1109/NUSOD.2019.8806837","url":null,"abstract":"Silicon Nitride (Si3N4) based photonics circuits fabricated using TriPleX technology have proven to be low-loss while occupying relatively small footprint. We designed and simulated an Arrayed Waveguide Grating (AWG) with 50 GHz channel spacing over 5 nm wavelength range in the C-band together with a Micro Ring Resonator (MRR) with an FSR of 50 GHz as integrated building blocks of a micro-spectrometer using Si3N4 waveguides. Simulation results reveal 2 – 4 dB loss for AWG and sub-GHz resolution for MRR.","PeriodicalId":369769,"journal":{"name":"2019 International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD)","volume":"170 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114876779","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
An Integrated Thermal Dissipation Micro Structure for 400Gbit/s Optical Module 400Gbit/s光模块集成散热微结构研究
2019 International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD) Pub Date : 2019-07-01 DOI: 10.1109/NUSOD.2019.8806931
Xu Liu, Jiaxu Dong, Zhekai Zhang, Xiaohan Sun
{"title":"An Integrated Thermal Dissipation Micro Structure for 400Gbit/s Optical Module","authors":"Xu Liu, Jiaxu Dong, Zhekai Zhang, Xiaohan Sun","doi":"10.1109/NUSOD.2019.8806931","DOIUrl":"https://doi.org/10.1109/NUSOD.2019.8806931","url":null,"abstract":"400Gbit/s optical module will soon be commercially deployed on a large scale due to the need for high capacity information transmission. It has much higher power density than that of 100Gbit/s and 40Gbit/s and therefore the thermal management still remains an obstacle. An integrated thermal dissipation micro structure (ITDMS) including μ-channel, μ-pool, graphene thermal pad with lateral and longitudinal transfer paths proposed and numerically validated for effective heat dissipation of CDFP optical modules.","PeriodicalId":369769,"journal":{"name":"2019 International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD)","volume":"459 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116504770","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Pulse Compression in Q-Switched Lasers using a Comblike Gain/absorption Structure 使用梳状增益/吸收结构的调q激光器中的脉冲压缩
2019 International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD) Pub Date : 2019-07-01 DOI: 10.1109/NUSOD.2019.8806918
A. Atieh, Cem Bonfil, J. Rasmussen, T. Smy
{"title":"Pulse Compression in Q-Switched Lasers using a Comblike Gain/absorption Structure","authors":"A. Atieh, Cem Bonfil, J. Rasmussen, T. Smy","doi":"10.1109/NUSOD.2019.8806918","DOIUrl":"https://doi.org/10.1109/NUSOD.2019.8806918","url":null,"abstract":"A novel design for a multi-sections Q-switched laser is proposed to achieve pulse compression. Pulses approximately 1.41 ps wide are generated using a six-sections Q-switched laser. Commercially available software is used to model the Q-switched laser based on traveling wave model theory.","PeriodicalId":369769,"journal":{"name":"2019 International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117049888","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Numerical Designing of Optical Waveguide by Curvilinear Coordinates 基于曲线坐标的光波导数值设计
2019 International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD) Pub Date : 2019-07-01 DOI: 10.1109/NUSOD.2019.8806798
Tatsuya Usuki
{"title":"Numerical Designing of Optical Waveguide by Curvilinear Coordinates","authors":"Tatsuya Usuki","doi":"10.1109/NUSOD.2019.8806798","DOIUrl":"https://doi.org/10.1109/NUSOD.2019.8806798","url":null,"abstract":"We developed S-matrix analyzer for 3D-fullwave in curvilinear coordinates that can correspond to arbitrary shape of optical devices. The analyzer demonstrates propagation property for 90° bend of Si optical waveguide.","PeriodicalId":369769,"journal":{"name":"2019 International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD)","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128881858","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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