Pub Date : 2021-09-13DOI: 10.1109/NUSOD52207.2021.9541519
O. Marquardt, L. Geelhaar, O. Brandt
We study the electronic properties of In0.53Ga0.47As/InxAl1−xAs core/shell nanowires for light emission in the telecommunication range. In particular, we systematically investigate the influence of the In content x of the InxAl1−xAs shell and the diameter d of the In0.53Ga0.47As core on strain distribution, transition energies, and the character of the hole wave function. We show that the character of the hole state, and thus the polarization of the light emitted by such core/shell nanowires, can be easily tuned via these two experimentally accessible parameters.
{"title":"Wave-function engineering in In0.53Ga0.47As/InxAl1−xAs core/shell nanowires","authors":"O. Marquardt, L. Geelhaar, O. Brandt","doi":"10.1109/NUSOD52207.2021.9541519","DOIUrl":"https://doi.org/10.1109/NUSOD52207.2021.9541519","url":null,"abstract":"We study the electronic properties of In<inf>0.53</inf>Ga<inf>0.47</inf>As/In<inf>x</inf>Al<inf>1−x</inf>As core/shell nanowires for light emission in the telecommunication range. In particular, we systematically investigate the influence of the In content x of the In<inf>x</inf>Al<inf>1−x</inf>As shell and the diameter d of the In<inf>0.53</inf>Ga<inf>0.47</inf>As core on strain distribution, transition energies, and the character of the hole wave function. We show that the character of the hole state, and thus the polarization of the light emitted by such core/shell nanowires, can be easily tuned via these two experimentally accessible parameters.","PeriodicalId":6780,"journal":{"name":"2021 International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD)","volume":"11 1","pages":"15-16"},"PeriodicalIF":0.0,"publicationDate":"2021-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74724758","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}
Pub Date : 2021-09-13DOI: 10.1109/NUSOD52207.2021.9541459
Tianran Liu, Y. Jiao, E. Bente
In this work we present a design of a computer-generated waveguide hologram coupler with an ultra-long working distance and wavelength multiplexing in the near infrared. An approximation method to compute the scalar field from a detour phase hologram is presented. The accuracy is comparable to FDTD but it is achieved much faster. Coupling efficiency from waveguide to free space and fabrication feasibility of design are optimized with the method.
{"title":"Design of a computer-generated waveguide hologram for integrated free space sensing","authors":"Tianran Liu, Y. Jiao, E. Bente","doi":"10.1109/NUSOD52207.2021.9541459","DOIUrl":"https://doi.org/10.1109/NUSOD52207.2021.9541459","url":null,"abstract":"In this work we present a design of a computer-generated waveguide hologram coupler with an ultra-long working distance and wavelength multiplexing in the near infrared. An approximation method to compute the scalar field from a detour phase hologram is presented. The accuracy is comparable to FDTD but it is achieved much faster. Coupling efficiency from waveguide to free space and fabrication feasibility of design are optimized with the method.","PeriodicalId":6780,"journal":{"name":"2021 International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD)","volume":"43 1","pages":"95-96"},"PeriodicalIF":0.0,"publicationDate":"2021-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85370160","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}
Pub Date : 2021-09-13DOI: 10.1109/NUSOD52207.2021.9541449
C. Schweikert, N. Hoppe, R. Elster, W. Vogel, M. Berroth
An improved phase detection scheme for Mach-Zehnder and bimodal interferometers is presented. By using a 90° hybrid, always two outputs operate at a highly sensitive point and the phase-shift-unambiguousness is extended to a range of 2π. The phase detection is independent of mode attenuations and input power fluctuations.
{"title":"Improved Phase Detection in On-Chip Refractometers","authors":"C. Schweikert, N. Hoppe, R. Elster, W. Vogel, M. Berroth","doi":"10.1109/NUSOD52207.2021.9541449","DOIUrl":"https://doi.org/10.1109/NUSOD52207.2021.9541449","url":null,"abstract":"An improved phase detection scheme for Mach-Zehnder and bimodal interferometers is presented. By using a 90° hybrid, always two outputs operate at a highly sensitive point and the phase-shift-unambiguousness is extended to a range of 2π. The phase detection is independent of mode attenuations and input power fluctuations.","PeriodicalId":6780,"journal":{"name":"2021 International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD)","volume":"4656 1 1","pages":"113-114"},"PeriodicalIF":0.0,"publicationDate":"2021-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80151893","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}
Pub Date : 2021-09-13DOI: 10.1109/NUSOD52207.2021.9541454
Mohammadamin Ghomashi, A. Tibaldi, F. Bertazzi, M. Vallone, M. Goano, G. Ghione
The paper is focused on the design of optical components based on plasmonic multi-slot directional couplers. In particular, the design of an all-optical gate is proposed, whose operation is based on the coupling between three plasmonic slots. The device input wavelength is 1550 nm, typical of long-haul telecommunication systems. The device footprint is as small as 11×6 µm2 and the contrast ratio as an AND gate is about 5.8 dB. The two well-known Finite-Difference Time-Domain (FDTD) and Finite-Difference Eigenmode (FDE) methods are used for the device simulation and optimization.
{"title":"Simulation and design of plasmonic directional couplers: application to interference-based all-optical gates","authors":"Mohammadamin Ghomashi, A. Tibaldi, F. Bertazzi, M. Vallone, M. Goano, G. Ghione","doi":"10.1109/NUSOD52207.2021.9541454","DOIUrl":"https://doi.org/10.1109/NUSOD52207.2021.9541454","url":null,"abstract":"The paper is focused on the design of optical components based on plasmonic multi-slot directional couplers. In particular, the design of an all-optical gate is proposed, whose operation is based on the coupling between three plasmonic slots. The device input wavelength is 1550 nm, typical of long-haul telecommunication systems. The device footprint is as small as 11×6 µm2 and the contrast ratio as an AND gate is about 5.8 dB. The two well-known Finite-Difference Time-Domain (FDTD) and Finite-Difference Eigenmode (FDE) methods are used for the device simulation and optimization.","PeriodicalId":6780,"journal":{"name":"2021 International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD)","volume":"11 1","pages":"117-118"},"PeriodicalIF":0.0,"publicationDate":"2021-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84044587","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}
Pub Date : 2021-09-13DOI: 10.1109/NUSOD52207.2021.9541421
E. Tonita, C. Valdivia, K. Hinzer
We investigate the impact of surface texturing on current loss as a function of depth and wavelength in high efficiency bifacial silicon heterojunction solar cells operating at their maximum power output. We couple 3D ray tracing with TMM thin-film boundary conditions for optical simulations and solve Poisson’s drift-diffusion equations to calculate carrier recombination under both front and rear illumination. For front (rear) AM1.5G illumination at normal incidence, regular inverted pyramids out-perform planar surfaces and upright pyramid texture efficiencies by 17.1% rel. (17.9% rel.) and 1.4% rel. (1.0% rel.), respectively. Reduced carrier loss for inverted pyramid textures is calculated to be primarily due to a reflectivity decrease of 63% (76%) compared to planar surfaces which results in enhanced carrier-generation at depths further into the c-Si substrate. The benefit of inverted pyramidal light-trapping will be further enhanced when higher angles of incidence are considered, with angular performance particularly relevant for the rear-side.
{"title":"Impact of Surface Texture on Bifacial Silicon Heterojunction Solar Cell Carrier Loss","authors":"E. Tonita, C. Valdivia, K. Hinzer","doi":"10.1109/NUSOD52207.2021.9541421","DOIUrl":"https://doi.org/10.1109/NUSOD52207.2021.9541421","url":null,"abstract":"We investigate the impact of surface texturing on current loss as a function of depth and wavelength in high efficiency bifacial silicon heterojunction solar cells operating at their maximum power output. We couple 3D ray tracing with TMM thin-film boundary conditions for optical simulations and solve Poisson’s drift-diffusion equations to calculate carrier recombination under both front and rear illumination. For front (rear) AM1.5G illumination at normal incidence, regular inverted pyramids out-perform planar surfaces and upright pyramid texture efficiencies by 17.1% rel. (17.9% rel.) and 1.4% rel. (1.0% rel.), respectively. Reduced carrier loss for inverted pyramid textures is calculated to be primarily due to a reflectivity decrease of 63% (76%) compared to planar surfaces which results in enhanced carrier-generation at depths further into the c-Si substrate. The benefit of inverted pyramidal light-trapping will be further enhanced when higher angles of incidence are considered, with angular performance particularly relevant for the rear-side.","PeriodicalId":6780,"journal":{"name":"2021 International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD)","volume":"28 2 1","pages":"55-56"},"PeriodicalIF":0.0,"publicationDate":"2021-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89905443","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}
Pub Date : 2021-09-13DOI: 10.1109/NUSOD52207.2021.9541483
Seok-Hwan Jeong
Novel scheme for silicon-wire type flat-topped wavelength filter is proposed and theoretically verified. Multimode interference couplers with symmetric and asymmetric splitting ratios used in a delayed interference type filter made filtering spectra flat over wide wavelength range of >80nm with potentially better production yield.
{"title":"Flat-Spectral-Band Filter for Fabrication Tolerance and Wideband Spectral Range","authors":"Seok-Hwan Jeong","doi":"10.1109/NUSOD52207.2021.9541483","DOIUrl":"https://doi.org/10.1109/NUSOD52207.2021.9541483","url":null,"abstract":"Novel scheme for silicon-wire type flat-topped wavelength filter is proposed and theoretically verified. Multimode interference couplers with symmetric and asymmetric splitting ratios used in a delayed interference type filter made filtering spectra flat over wide wavelength range of >80nm with potentially better production yield.","PeriodicalId":6780,"journal":{"name":"2021 International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD)","volume":"1 1","pages":"99-100"},"PeriodicalIF":0.0,"publicationDate":"2021-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90121379","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}
Pub Date : 2021-09-13DOI: 10.1109/NUSOD52207.2021.9541493
Paul Mertin, B. Witzigmann
Quantum systems for information processing rely on the distribution of quantum information in a network. Lanthanide complexes coupled to an optical cavity can act as an interface between a stationary and a flying QuBit. Here we show that in such a system the stationary quantum information can be mapped onto a photon, paving the way for a node in photonic quantum network.
{"title":"Quantum Information Interface on a Photonic Crystal Chip","authors":"Paul Mertin, B. Witzigmann","doi":"10.1109/NUSOD52207.2021.9541493","DOIUrl":"https://doi.org/10.1109/NUSOD52207.2021.9541493","url":null,"abstract":"Quantum systems for information processing rely on the distribution of quantum information in a network. Lanthanide complexes coupled to an optical cavity can act as an interface between a stationary and a flying QuBit. Here we show that in such a system the stationary quantum information can be mapped onto a photon, paving the way for a node in photonic quantum network.","PeriodicalId":6780,"journal":{"name":"2021 International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD)","volume":"2 1","pages":"97-98"},"PeriodicalIF":0.0,"publicationDate":"2021-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79354294","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}
Pub Date : 2021-09-13DOI: 10.1109/NUSOD52207.2021.9541481
Y. Kvach
The development of LED technology has allowed the Ukrainian Association of Lighting Enterprises of Vatra Corporation to develop the construction of LED equipment for the airfield light signal systems. Features of fire design, angles of installation of fires, difficulties in observing LED aerodrome fires - these factors influence the decision making when establishing visual contact. In the event of the signaling system failure, the crew will not be able to determine its location in the space or the visual contact may be erroneous. To solve the complex problem of observing light signals from LED light-signal aerodrome fires, need a tool using the MatLab interface is offered. The tool is used to simulate secondary optics for the design of LED aerodrome fires with the appropriate light distribution.
{"title":"Modeling of secondary optics LED aerodrome fires","authors":"Y. Kvach","doi":"10.1109/NUSOD52207.2021.9541481","DOIUrl":"https://doi.org/10.1109/NUSOD52207.2021.9541481","url":null,"abstract":"The development of LED technology has allowed the Ukrainian Association of Lighting Enterprises of Vatra Corporation to develop the construction of LED equipment for the airfield light signal systems. Features of fire design, angles of installation of fires, difficulties in observing LED aerodrome fires - these factors influence the decision making when establishing visual contact. In the event of the signaling system failure, the crew will not be able to determine its location in the space or the visual contact may be erroneous. To solve the complex problem of observing light signals from LED light-signal aerodrome fires, need a tool using the MatLab interface is offered. The tool is used to simulate secondary optics for the design of LED aerodrome fires with the appropriate light distribution.","PeriodicalId":6780,"journal":{"name":"2021 International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD)","volume":"1 1","pages":"71-72"},"PeriodicalIF":0.0,"publicationDate":"2021-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88164597","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}
Pub Date : 2021-09-13DOI: 10.1109/NUSOD52207.2021.9541470
M. Usman
This work theoretically investigates the electronic and optical properties of GaBixAs1−x/GaAs core−shell and GaAs/GaBixAs1−x/GaAs multi-core−shell nanowires. Our results show a large tuning of absorption wavelength (0.9 µ to 1.6 µ) by varying Bi composition and/or nanowire diameters. The computed polarisation dependent optical spectra indicate the possibility to incorporate such nanowires in photonic devices desiring isotropic polarisation response . Overall our work provides a systematic and detailed understanding of bismuth-containing GaAs nanowire optoelectronic properties which could offer new possibilities for future green photonic technologies.
{"title":"Bismuth-containing GaAs Core–Shell Nanowires","authors":"M. Usman","doi":"10.1109/NUSOD52207.2021.9541470","DOIUrl":"https://doi.org/10.1109/NUSOD52207.2021.9541470","url":null,"abstract":"This work theoretically investigates the electronic and optical properties of GaBixAs1−x/GaAs core−shell and GaAs/GaBixAs1−x/GaAs multi-core−shell nanowires. Our results show a large tuning of absorption wavelength (0.9 µ to 1.6 µ) by varying Bi composition and/or nanowire diameters. The computed polarisation dependent optical spectra indicate the possibility to incorporate such nanowires in photonic devices desiring isotropic polarisation response . Overall our work provides a systematic and detailed understanding of bismuth-containing GaAs nanowire optoelectronic properties which could offer new possibilities for future green photonic technologies.","PeriodicalId":6780,"journal":{"name":"2021 International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD)","volume":"5 1","pages":"19-20"},"PeriodicalIF":0.0,"publicationDate":"2021-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79537793","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}
Pub Date : 2021-09-13DOI: 10.1109/NUSOD52207.2021.9541525
E. Renner, Lisa-Sophie Haerteis, A. Rittler, B. Schmauss
We propose a synthesis model for fiber Bragg gratings (FBGs) to monitor temperature measurement errors due to aging behavior. This approach might be called a Digital Shadow since we are able to monitor all essential parameters of the grating to perform error prediction and consequently compensation. The model is tested during accelerated aging experiments, which furthermore reveal the shift of the center wavelength because of thermal decay.
{"title":"Implementation of a Digital Shadow for Fiber Bragg Gratings","authors":"E. Renner, Lisa-Sophie Haerteis, A. Rittler, B. Schmauss","doi":"10.1109/NUSOD52207.2021.9541525","DOIUrl":"https://doi.org/10.1109/NUSOD52207.2021.9541525","url":null,"abstract":"We propose a synthesis model for fiber Bragg gratings (FBGs) to monitor temperature measurement errors due to aging behavior. This approach might be called a Digital Shadow since we are able to monitor all essential parameters of the grating to perform error prediction and consequently compensation. The model is tested during accelerated aging experiments, which furthermore reveal the shift of the center wavelength because of thermal decay.","PeriodicalId":6780,"journal":{"name":"2021 International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD)","volume":"36 1","pages":"103-104"},"PeriodicalIF":0.0,"publicationDate":"2021-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78021926","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：