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Journal of The Optical Society of America B-optical Physics最新文献

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Ultra-compact all-optical half-adder based on inverse design 基于反设计的超紧凑全光半加法器
4区 物理与天体物理
Journal of The Optical Society of America B-optical Physics Pub Date : 2023-11-08 DOI: 10.1364/josab.503709
zhigang zhang, hongfeng yang, Mingyu Luo
{"title":"Ultra-compact all-optical half-adder based on inverse design","authors":"zhigang zhang, hongfeng yang, Mingyu Luo","doi":"10.1364/josab.503709","DOIUrl":"https://doi.org/10.1364/josab.503709","url":null,"abstract":"The all-optical half-adder is an important module in integrated photonics, which can be used to realize optical computing and optical communication. At present, the all-optical half-adder implemented by traditional methods cannot easily be further compressed in size, which also limits the development of its integration. In this paper, four optical devices, the power beam splitter, waveguide cross, XOR gate, and AND gate, are designed by the inverse design method. Their footprint is only 2µm×2µm, and they have extremely low insertion loss and high contrast ratio. These devices are further interconnected with waveguides to realize an all-optical half-adder module with a size of only 10µm×4.5µm. When working at 1550 nm, the module exhibits contrast ratios of 14.47 dB and 5.14 dB for SUM and CARRY, respectively. These photonic devices have the characteristics of ultra-compact size and high performance, rendering them highly valuable for photonic integrated circuits.","PeriodicalId":17280,"journal":{"name":"Journal of The Optical Society of America B-optical Physics","volume":" 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135293278","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Channeling of weak intramode beams in the field of a strong spatial soliton in a thin left-handed film on a right-handed substrate with Kerr effect 在克尔效应下，弱模内光束在右手基板上的左薄膜强空间孤子场中的通道
4区 物理与天体物理
Journal of The Optical Society of America B-optical Physics Pub Date : 2023-11-08 DOI: 10.1364/josab.496531
Albert Buller, Rudolph Litvinov, Natalya Litvinova
{"title":"Channeling of weak intramode beams in the field of a strong spatial soliton in a thin left-handed film on a right-handed substrate with Kerr effect","authors":"Albert Buller, Rudolph Litvinov, Natalya Litvinova","doi":"10.1364/josab.496531","DOIUrl":"https://doi.org/10.1364/josab.496531","url":null,"abstract":"The trapping of weak guided modes by a strip waveguide induced by a strong spatial soliton in a planar waveguide based on a thin left-handed film with a right-handed linear cover and a substrate with the Kerr effect at a frequency near the zero group velocity of the TE mode is considered. It is shown that a bright (dark) soliton can induce a strip waveguide not only for a positive (negative) nonlinear optical coefficient of the substrate, but also for a negative (positive) one, which is due to the existence in the original planar waveguide of guided modes with both positive and negative group velocities.","PeriodicalId":17280,"journal":{"name":"Journal of The Optical Society of America B-optical Physics","volume":" 7","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135293273","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Nonlinear Photocarrier Dynamics in Multilayer WSe₂ Induced By Intense Terahertz Pulses 强太赫兹脉冲诱导多层WSe 2的非线性光载流子动力学
4区 物理与天体物理
Journal of The Optical Society of America B-optical Physics Pub Date : 2023-11-08 DOI: 10.1364/josab.504204
Viela Guay, Nathan Johnson, Yue Zhang, Arend van der Zande, Spencer Thorp, Matthew Graham, Yun-Shik Lee
{"title":"Nonlinear Photocarrier Dynamics in Multilayer WSe₂ Induced By Intense Terahertz Pulses","authors":"Viela Guay, Nathan Johnson, Yue Zhang, Arend van der Zande, Spencer Thorp, Matthew Graham, Yun-Shik Lee","doi":"10.1364/josab.504204","DOIUrl":"https://doi.org/10.1364/josab.504204","url":null,"abstract":"Non-equilibrium photocarriers in multilayer WSe 2 injected by femtosecond laser pulses exhibit extraordinary nonlinear dynamics in the presence of intense THz fields. The THz absorption in optically excited WSe 2 rises rapidly in the low THz field regime and gradually ramps up at high intensities. The strong THz pulses drive the photocarriers into sidebands of higher mobility and release trapped charge carriers, which consequently enhance the transient conductivity of WSe 2 . The spectrally analyzed conductivity reveals distinctive features, indicating that the photocarriers undergo resonant interactions such as carrier-photon scattering.","PeriodicalId":17280,"journal":{"name":"Journal of The Optical Society of America B-optical Physics","volume":" 30","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135293133","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Stacked ring resonators for optical vortices 光学涡旋的堆叠环形谐振器
4区 物理与天体物理
Journal of The Optical Society of America B-optical Physics Pub Date : 2023-11-08 DOI: 10.1364/josab.497949
C. Alexeyev, Elena Barshak, Boris Lapin, Maxim Yavorsky
{"title":"Stacked ring resonators for optical vortices","authors":"C. Alexeyev, Elena Barshak, Boris Lapin, Maxim Yavorsky","doi":"10.1364/josab.497949","DOIUrl":"https://doi.org/10.1364/josab.497949","url":null,"abstract":"In this paper, we study transmission of higher-order modes, optical vortices (OVs) included, through a bus fiber coupled to a vertical stack of ring resonators—stack multi-ring resonator (SMR). We show that transmission curves for OVs feature a characteristic gap-like structure, whose presence we explain as a manifestation of the band structure of an infinite stack of coupled ring resonators. We show a principal possibility to use SMRs as elements of delay lines for fiber optics communications on orbital angular momentum (OAM) states. We emphasize the advantages of such systems as delay lines for communications that use as signal carriers odd and even Laguerre–Gaussian (LG) modes. We also show that SMRs are able to exert super-efficient parametric control over the OAM of the transmitted optical field, as well as to generate OAM beams from odd and even LG modes.","PeriodicalId":17280,"journal":{"name":"Journal of The Optical Society of America B-optical Physics","volume":" 6","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135293274","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Strategies for optimizing plasmonic grating couplers with topology-based inverse design 基于拓扑逆设计的等离子体光栅耦合器优化策略
4区 物理与天体物理
Journal of The Optical Society of America B-optical Physics Pub Date : 2023-11-07 DOI: 10.1364/josab.502571
Michael Efseaff, Mark Harrison
{"title":"Strategies for optimizing plasmonic grating couplers with topology-based inverse design","authors":"Michael Efseaff, Mark Harrison","doi":"10.1364/josab.502571","DOIUrl":"https://doi.org/10.1364/josab.502571","url":null,"abstract":"","PeriodicalId":17280,"journal":{"name":"Journal of The Optical Society of America B-optical Physics","volume":"108 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135539896","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Topology Optimization of Efficient and Compact Thermo-Optical Phase Shifters 高效紧凑型热光学移相器的拓扑优化
4区 物理与天体物理
Journal of The Optical Society of America B-optical Physics Pub Date : 2023-11-03 DOI: 10.1364/josab.499979
Beñat Martinez de Aguirre Jokisch, Rasmus Christiansen, Ole Sigmund
{"title":"Topology Optimization of Efficient and Compact Thermo-Optical Phase Shifters","authors":"Beñat Martinez de Aguirre Jokisch, Rasmus Christiansen, Ole Sigmund","doi":"10.1364/josab.499979","DOIUrl":"https://doi.org/10.1364/josab.499979","url":null,"abstract":"Thermo-optical phase shifters (TOPSs) have emerged as an important building block in silicon photonics platforms due to their ability to dynamically control the optical phase of light. To enable wide-scale adoption in practical applications, it is paramount that TOPSs are optimized for low power consumption, low optical loss, small footprint, small thermal time constant, and easy fabrication, among other ideal characteristics. In the last decades, multiple designs have emerged from intuition and trial-and-error-based processes to match these objectives. In this work, we propose a topology optimization-based multiphysics inverse design framework for designing cross-sectionally compact low-optical-loss TOPS devices that can accommodate fabrication constraints. Results demonstrate the capability of tailoring novel designs with losses up to 33% lower than previously proposed designs.","PeriodicalId":17280,"journal":{"name":"Journal of The Optical Society of America B-optical Physics","volume":"175 S406","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135775292","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Hybrid multi-channel electrically tunable bandstop filter based on DAST electro-optical material 基于DAST电光材料的混合多通道电可调谐带阻滤波器
4区 物理与天体物理
Journal of The Optical Society of America B-optical Physics Pub Date : 2023-11-03 DOI: 10.1364/josab.506177
Yunping Qi, Shu Zhang, Qiang Shi, Mingrui Su, SHIYU ZHAO, Zhou zihao, xiang xian wang
{"title":"Hybrid multi-channel electrically tunable bandstop filter based on DAST electro-optical material","authors":"Yunping Qi, Shu Zhang, Qiang Shi, Mingrui Su, SHIYU ZHAO, Zhou zihao, xiang xian wang","doi":"10.1364/josab.506177","DOIUrl":"https://doi.org/10.1364/josab.506177","url":null,"abstract":"A voltage-tunable hybrid multichannel bandstop filter utilizing a metal-insulator-metal (MIM) waveguide is presented in this work. The unique aspect of this filter is its ability to achieve three narrowband and one broadband filtering functions simultaneously. The filter design comprises two asymmetric composite cavities filled with an organic electro-optical material called 4-dimethylamino-N-methyl-4-toluenesulfonate (DAST). These composite cavities consist of a rectangular cavity combined with an annular cavity. The annular cavity is formed by connecting two rectangular cavities with two semi-elliptical annular cavities. Using the finite element method (FEM), we thoroughly study and analyze the transmission spectrum and magnetic field distribution of the filter. We also delve into the impact of various structural parameters on the transmission spectrum. Our analysis demonstrates that the bandstop filter achieves a remarkable minimum transmittance of 0.02%, 0.29%, and 0.1%, alongside minimum bandwidths of 5 nm, 9 nm, and 25 nm in three narrowband modes, respectively. These modes attain maximum quality factors ( Q ) of 123.7, 87.1, and 44.2. In the broadband mode, the stopband bandwidth covers 70 nm, and the adjustable range spans from 1695 nm to 2065 nm. The filter's characteristics can be dynamically adjusted by applying a control voltage, introducing a remarkable level of tunability while maintaining stable filter performance. To enhance its performance, we optimize the basic structure, yielding a broadened bandwidth of 238 nm for the broadband mode. This extended bandwidth comes with exceptional electrical tuning characteristics intact. Our proposed voltage-tunable hybrid multichannel bandstop filter presents a versatile solution with significant potential applications in high-density integrated circuits and nano-optics","PeriodicalId":17280,"journal":{"name":"Journal of The Optical Society of America B-optical Physics","volume":"32 25","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135818733","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Direction Control of Electromagnetic Beam Scattering by Physically Stacked Cascaded Coding Metasurfaces 物理堆叠级联编码超表面对电磁波束散射方向的控制
4区 物理与天体物理
Journal of The Optical Society of America B-optical Physics Pub Date : 2023-11-03 DOI: 10.1364/josab.501052
Chenxia Li, Jie Jiang, Bo Fang, Zhi Hong, Xufeng Jing
{"title":"Direction Control of Electromagnetic Beam Scattering by Physically Stacked Cascaded Coding Metasurfaces","authors":"Chenxia Li, Jie Jiang, Bo Fang, Zhi Hong, Xufeng Jing","doi":"10.1364/josab.501052","DOIUrl":"https://doi.org/10.1364/josab.501052","url":null,"abstract":"Coded metasurfaces build a bridge between the physical world and digital worlds, making it possible to manipulate electromagnetic waves and implement programmable metamaterials through digitally coded sequences. This “digital metasurface” based on binary digital logic greatly simplifies the design process of the metasurface and improves the flexibility of regulating electromagnetic waves. Based on the principle of Fourier convolution addition, a physical superposition cascaded metasurface is designed. The metasurface unit consists of three dielectric substrates and four “H”-shaped copper metal patch boards. The addition of most coding metasurfaces is to add two basic coding metasurfaces through the addition rules between digital codes to obtain a new coding sequence, and the new coding sequence has the characteristics of the previous two coding sequences. We propose a physically superimposed cascaded encoding metasurface. By physically superposing two different sequences of metasurfaces, the cascaded metasurface formed after superposition also has the characteristics of the first two basic coding sequences. We experimentally verified the proposed idea using two different dielectric materials, and there was good consistency between the experiment and simulation, thereby verifying the consistency of the metasurface cascade and the phase-encoding element surface addition principle. This design approach has potential applications in multifunctional photonic devices.","PeriodicalId":17280,"journal":{"name":"Journal of The Optical Society of America B-optical Physics","volume":"175 6","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135775293","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Vortex light - based identification of directional emission from sodium atoms 基于旋涡光的钠原子定向发射识别
4区 物理与天体物理
Journal of The Optical Society of America B-optical Physics Pub Date : 2023-11-01 DOI: 10.1364/josab.499977
Alexander Akulshin, Felipe Pedreros Bustos, Nafia Rahaman, Dmitry Budker
{"title":"Vortex light - based identification of directional emission from sodium atoms","authors":"Alexander Akulshin, Felipe Pedreros Bustos, Nafia Rahaman, Dmitry Budker","doi":"10.1364/josab.499977","DOIUrl":"https://doi.org/10.1364/josab.499977","url":null,"abstract":"","PeriodicalId":17280,"journal":{"name":"Journal of The Optical Society of America B-optical Physics","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135270979","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Low-temperature multi-channel bandstop filters with ultra-wide stopbands in Fibonacci superconducting photonic crystals 斐波那契超导光子晶体中具有超宽阻带的低温多通道带阻滤波器
4区 物理与天体物理
Journal of The Optical Society of America B-optical Physics Pub Date : 2023-11-01 DOI: 10.1364/josab.505290
Yongjun Xiao, Dong Zhao, Liu Fanghua, Ni Hao
{"title":"Low-temperature multi-channel bandstop filters with ultra-wide stopbands in Fibonacci superconducting photonic crystals","authors":"Yongjun Xiao, Dong Zhao, Liu Fanghua, Ni Hao","doi":"10.1364/josab.505290","DOIUrl":"https://doi.org/10.1364/josab.505290","url":null,"abstract":"","PeriodicalId":17280,"journal":{"name":"Journal of The Optical Society of America B-optical Physics","volume":"11 1-2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135270847","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","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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