Pub Date : 2016-07-11DOI: 10.1109/NUSOD.2016.7547010
S. Atakaramians, B. Kuhlmey
Reducing the size of device components, e.g. waveguides and resonant cavities, beyond the diffraction limit is a means to an end. Here we demonstrate the condition required to have air cavities within a uniaxial metamaterial clad waveguide. Our work reveals that air cavity sizes much smaller than the operating wavelength (D2h/λ3=6.7e-4) are achievable under specific conditions of cladding material parameters, which could have great impact on miniaturization of electromagnetic devices.
{"title":"Sub-wavelength air cavities in uniaxial metamaterials","authors":"S. Atakaramians, B. Kuhlmey","doi":"10.1109/NUSOD.2016.7547010","DOIUrl":"https://doi.org/10.1109/NUSOD.2016.7547010","url":null,"abstract":"Reducing the size of device components, e.g. waveguides and resonant cavities, beyond the diffraction limit is a means to an end. Here we demonstrate the condition required to have air cavities within a uniaxial metamaterial clad waveguide. Our work reveals that air cavity sizes much smaller than the operating wavelength (D2h/λ3=6.7e-4) are achievable under specific conditions of cladding material parameters, which could have great impact on miniaturization of electromagnetic devices.","PeriodicalId":425705,"journal":{"name":"2016 International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD)","volume":"165 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133478513","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 : 2016-07-11DOI: 10.1109/NUSOD.2016.7547097
M. Erkintalo, F. Leo, T. Hansson, K. Webb, S. Murdoch, J. Anthony, I. Ricciardi, M. De Rosa, S. Wabnitz, S. Coen
We present a comprehensive review of recent work on numerical modelling of frequency comb generation in coherently-driven nonlinear resonators. Specifically, we discuss modelling and nonlinear dynamics of frequency combs generated in Kerr nonlinear microresonators, emphasizing links to similar dynamics studied in macroscopic fibre cavities. In addition to established Kerr frequency comb generators, we will also discuss emerging comb generation platforms based on continuously-driven quadratically nonlinear resonators.
{"title":"Numerical modelling of frequency comb generation in nonlinear resonators","authors":"M. Erkintalo, F. Leo, T. Hansson, K. Webb, S. Murdoch, J. Anthony, I. Ricciardi, M. De Rosa, S. Wabnitz, S. Coen","doi":"10.1109/NUSOD.2016.7547097","DOIUrl":"https://doi.org/10.1109/NUSOD.2016.7547097","url":null,"abstract":"We present a comprehensive review of recent work on numerical modelling of frequency comb generation in coherently-driven nonlinear resonators. Specifically, we discuss modelling and nonlinear dynamics of frequency combs generated in Kerr nonlinear microresonators, emphasizing links to similar dynamics studied in macroscopic fibre cavities. In addition to established Kerr frequency comb generators, we will also discuss emerging comb generation platforms based on continuously-driven quadratically nonlinear resonators.","PeriodicalId":425705,"journal":{"name":"2016 International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116217128","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 : 2016-07-11DOI: 10.1109/NUSOD.2016.7547081
P. Bardella, I. Montrosset, M. Gioannini
We present the development of a numerical simulation tool to analyze the self-mode locking in single section Quatum Dot Fabry-Perot comb lasers. The numerical analysis shows that the outpot optical spectrum is an optical comb because the cavity modes are phased-locked by the four wave mixing. The impact of QD material parameters is also discussed.
{"title":"Numerical simulation of Quantum Dot single section Fabry-Perot laser combs","authors":"P. Bardella, I. Montrosset, M. Gioannini","doi":"10.1109/NUSOD.2016.7547081","DOIUrl":"https://doi.org/10.1109/NUSOD.2016.7547081","url":null,"abstract":"We present the development of a numerical simulation tool to analyze the self-mode locking in single section Quatum Dot Fabry-Perot comb lasers. The numerical analysis shows that the outpot optical spectrum is an optical comb because the cavity modes are phased-locked by the four wave mixing. The impact of QD material parameters is also discussed.","PeriodicalId":425705,"journal":{"name":"2016 International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115470661","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 : 2016-07-11DOI: 10.1109/NUSOD.2016.7547022
Debao Zhang, Y. Kuang, X. Hong, Yushen Liu, Z. Shao, Xifeng Yang
In this work, in order to enhance the light absorption in one micron thick crystalline silicon solar cells, a back reflecting and plasmonic nanodisk scheme is proposed. We investigate the scattering properties of aluminum nanostructures located at the back side and optimize them for enhancing absorption in the silicon layer by using finite difference time domain simulations. The results indicate that the period and diameters nanoparticles, spacer layer have a strong impact on short circuit current enhancements. This finding could lead to improved light trapping within a thin silicon solar cell device.
{"title":"Light absorption enhancement by embedding aluminum nanodisk arrays in rear dielectric of ultra-thin film solar cells","authors":"Debao Zhang, Y. Kuang, X. Hong, Yushen Liu, Z. Shao, Xifeng Yang","doi":"10.1109/NUSOD.2016.7547022","DOIUrl":"https://doi.org/10.1109/NUSOD.2016.7547022","url":null,"abstract":"In this work, in order to enhance the light absorption in one micron thick crystalline silicon solar cells, a back reflecting and plasmonic nanodisk scheme is proposed. We investigate the scattering properties of aluminum nanostructures located at the back side and optimize them for enhancing absorption in the silicon layer by using finite difference time domain simulations. The results indicate that the period and diameters nanoparticles, spacer layer have a strong impact on short circuit current enhancements. This finding could lead to improved light trapping within a thin silicon solar cell device.","PeriodicalId":425705,"journal":{"name":"2016 International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121636145","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}
In order to design couplers based on side-polished photonic crystal fiber (SPPCF), we made the simulation and calculated the polished angle. A model of coupling region of SPPCF coupler was established. The optical propagation characteristics of SPPCF coupler was calculated with different angles by using the software Rsoft. The simulation shows that light field appeared alternately between two optical fibers of coupler and there was coupling effect. When the angle was 0°, it could provide the best design for the objective coupling ratio of 50%, because the relatively longer coupling period gives more convenience to fabricate a PCF based fiber coupler.
{"title":"Optimization of polished angle for optical coupler based on side-polished photonic crystal fiber","authors":"Zhijian Gan, Yue Ma, Zhe Chen, Yunhan Luo, Xiaoli He, Heyuan Guan, Huihui Lu, Jianhui Yu, Jieyuan Tang, J. Zhang","doi":"10.1109/NUSOD.2016.7547100","DOIUrl":"https://doi.org/10.1109/NUSOD.2016.7547100","url":null,"abstract":"In order to design couplers based on side-polished photonic crystal fiber (SPPCF), we made the simulation and calculated the polished angle. A model of coupling region of SPPCF coupler was established. The optical propagation characteristics of SPPCF coupler was calculated with different angles by using the software Rsoft. The simulation shows that light field appeared alternately between two optical fibers of coupler and there was coupling effect. When the angle was 0°, it could provide the best design for the objective coupling ratio of 50%, because the relatively longer coupling period gives more convenience to fabricate a PCF based fiber coupler.","PeriodicalId":425705,"journal":{"name":"2016 International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD)","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122549497","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 : 2016-07-11DOI: 10.1109/NUSOD.2016.7547039
Xinjie Feng, Kai Xia, Mei Yang, Yunhan Luo, Jieyuan Tang, Heyuan Guan, Junbin Fang, Huihui Lu, Jianhui Yu, J. Zhang, Zhe Chen
In this paper, a theoretical analysis of figure of merit (FOM) of a surface plasmon resonance (SPR) sensor with a one dimensional (1D) Photonic Crystal (PC)and an anti-oxidizing layer of the graphene has been carried out. The numerical simulation is based on side polished multi mode fiber SPR sensor with the 75 μm residual fiber thickness and 20nm silver film thickness. Meanwhile, the comparisons for traditional SPR sensor and SPR sensor with only one anti-oxidizing layer have also been studied. The studies show that the SPR sensor with PC structure and graphene layer has higher FOM than other SPR sensors mentioned. This design is expected to be a better choice on chemical and biological sensing.
{"title":"Surface plasmon resonance fiber optical sensor based on Photonic Crystal and graphene","authors":"Xinjie Feng, Kai Xia, Mei Yang, Yunhan Luo, Jieyuan Tang, Heyuan Guan, Junbin Fang, Huihui Lu, Jianhui Yu, J. Zhang, Zhe Chen","doi":"10.1109/NUSOD.2016.7547039","DOIUrl":"https://doi.org/10.1109/NUSOD.2016.7547039","url":null,"abstract":"In this paper, a theoretical analysis of figure of merit (FOM) of a surface plasmon resonance (SPR) sensor with a one dimensional (1D) Photonic Crystal (PC)and an anti-oxidizing layer of the graphene has been carried out. The numerical simulation is based on side polished multi mode fiber SPR sensor with the 75 μm residual fiber thickness and 20nm silver film thickness. Meanwhile, the comparisons for traditional SPR sensor and SPR sensor with only one anti-oxidizing layer have also been studied. The studies show that the SPR sensor with PC structure and graphene layer has higher FOM than other SPR sensors mentioned. This design is expected to be a better choice on chemical and biological sensing.","PeriodicalId":425705,"journal":{"name":"2016 International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD)","volume":"280 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123978330","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 : 2016-07-11DOI: 10.1109/NUSOD.2016.7546892
B. Eggleton
Compared to the almost magical impact of lasers and photonics on our lives, from the Internet to supermarket checkouts, mechanical systems can seem almost quaint. Yet one of the surprises of nonlinear optics - the field of optics with high intensity lasers - is that light may interact strongly with sound, the most mundane of mechanical vibrations. Intense laser light literally “shakes” the glass in optical fibres, exciting acoustic waves (sound) in the fibre. Under the right conditions, it leads to a positive feedback loop between light and sound termed “Stimulated Brillouin Scattering,” or simply SBS. This nonlinear interaction can amplify or filter light waves with extreme precision in frequency (colour) which makes it uniquely suited to solve key problems in the fields of defence, biomedicine and wireless communications amongst others. SBS has been studied in optical fibres for decades; it is usually regarded as a nuisance for telecommunication and laser applications but it can also be harnessed for important applications. We achieved the first demonstration of SBS in compact chip-scale structures, carefully designed so that the optical fields and the acoustic fields are simultaneously confined and guided. This new platform has opened a range of new functionalities that are being applied in communications and defence with superior performance and compactness. This new optical-phononic chip reveals new regimes of light sound interactions at the nanoscale, which has required new theoretical developments. My talk will introduce this new field, review our progress and achievements and some of our recent highlights that point towards a new class of entirely silicon based optical phononic processor that can be manufactured in semiconductor CMOS foundries.
{"title":"Nonlinear optical phononics: Harnessing light-sound interactions in nanoscale integrated circuits","authors":"B. Eggleton","doi":"10.1109/NUSOD.2016.7546892","DOIUrl":"https://doi.org/10.1109/NUSOD.2016.7546892","url":null,"abstract":"Compared to the almost magical impact of lasers and photonics on our lives, from the Internet to supermarket checkouts, mechanical systems can seem almost quaint. Yet one of the surprises of nonlinear optics - the field of optics with high intensity lasers - is that light may interact strongly with sound, the most mundane of mechanical vibrations. Intense laser light literally “shakes” the glass in optical fibres, exciting acoustic waves (sound) in the fibre. Under the right conditions, it leads to a positive feedback loop between light and sound termed “Stimulated Brillouin Scattering,” or simply SBS. This nonlinear interaction can amplify or filter light waves with extreme precision in frequency (colour) which makes it uniquely suited to solve key problems in the fields of defence, biomedicine and wireless communications amongst others. SBS has been studied in optical fibres for decades; it is usually regarded as a nuisance for telecommunication and laser applications but it can also be harnessed for important applications. We achieved the first demonstration of SBS in compact chip-scale structures, carefully designed so that the optical fields and the acoustic fields are simultaneously confined and guided. This new platform has opened a range of new functionalities that are being applied in communications and defence with superior performance and compactness. This new optical-phononic chip reveals new regimes of light sound interactions at the nanoscale, which has required new theoretical developments. My talk will introduce this new field, review our progress and achievements and some of our recent highlights that point towards a new class of entirely silicon based optical phononic processor that can be manufactured in semiconductor CMOS foundries.","PeriodicalId":425705,"journal":{"name":"2016 International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD)","volume":"1737 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129458074","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 : 2016-07-11DOI: 10.1109/NUSOD.2016.7546993
C. Broderick, Silviu Bogusevschi, E. O’Reilly
The use of InGaAs metamorphic buffer layers (MBLs) to facilitate the growth of lattice-mismatched heterostructures constitutes an attractive approach to developing long-wavelength semiconductor lasers on GaAs substrates, since they offer the improved carrier and optical confinement associated with GaAs-based materials. We present a theoretical study of GaAs-based 1.3 and 1.55 μm (Al)InGaAs quantum well (QW) lasers grown on InGaAs MBLs. We demonstrate that optimised 1.3 μm metamorphic devices offer low threshold current densities and high differential gain, which compare favourably with InP-based devices. Overall, our analysis highlights and quantifies the potential of metamorphic QWs for the development of GaAs-based long-wavelength semiconductor lasers, and also provides guidelines for the design of optimised devices.
{"title":"Theory and optimisation of 1.3 and 1.55 μm (Al)InGaAs metamorphic quantum well lasers","authors":"C. Broderick, Silviu Bogusevschi, E. O’Reilly","doi":"10.1109/NUSOD.2016.7546993","DOIUrl":"https://doi.org/10.1109/NUSOD.2016.7546993","url":null,"abstract":"The use of InGaAs metamorphic buffer layers (MBLs) to facilitate the growth of lattice-mismatched heterostructures constitutes an attractive approach to developing long-wavelength semiconductor lasers on GaAs substrates, since they offer the improved carrier and optical confinement associated with GaAs-based materials. We present a theoretical study of GaAs-based 1.3 and 1.55 μm (Al)InGaAs quantum well (QW) lasers grown on InGaAs MBLs. We demonstrate that optimised 1.3 μm metamorphic devices offer low threshold current densities and high differential gain, which compare favourably with InP-based devices. Overall, our analysis highlights and quantifies the potential of metamorphic QWs for the development of GaAs-based long-wavelength semiconductor lasers, and also provides guidelines for the design of optimised devices.","PeriodicalId":425705,"journal":{"name":"2016 International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121909719","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 : 2016-07-11DOI: 10.1109/NUSOD.2016.7547029
B. Liu, Yanguang Yu, J. Xi, Qinghua Guo, Jun Tong
A laser diode (LD) with external feedback can generate undamped relaxation oscillation (RO) under a certain operational condition. The RO frequency is highly sensitive to the external cavity condition. This work is to study the relationship between the RO frequency of an LD with optical feedback and its external cavity length. We firstly numerically solve the Lang-Kobayashi (L-K) equations to theoretically determine the relationship, then, experimentally verify the theoretical results. Both the simulation and experiment show that the RO frequency is quasiperiodic function of the external cavity length with the period of half laser wavelength when the cavity length is varied in micro scale. The results obtained at this work is useful for sensing and measurement using a laser feedback interferometry at relaxation oscillation.
{"title":"Relationship between the relaxation oscillation frequency of a laser diode and its external cavity length","authors":"B. Liu, Yanguang Yu, J. Xi, Qinghua Guo, Jun Tong","doi":"10.1109/NUSOD.2016.7547029","DOIUrl":"https://doi.org/10.1109/NUSOD.2016.7547029","url":null,"abstract":"A laser diode (LD) with external feedback can generate undamped relaxation oscillation (RO) under a certain operational condition. The RO frequency is highly sensitive to the external cavity condition. This work is to study the relationship between the RO frequency of an LD with optical feedback and its external cavity length. We firstly numerically solve the Lang-Kobayashi (L-K) equations to theoretically determine the relationship, then, experimentally verify the theoretical results. Both the simulation and experiment show that the RO frequency is quasiperiodic function of the external cavity length with the period of half laser wavelength when the cavity length is varied in micro scale. The results obtained at this work is useful for sensing and measurement using a laser feedback interferometry at relaxation oscillation.","PeriodicalId":425705,"journal":{"name":"2016 International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD)","volume":"466 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127543139","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 : 2016-07-11DOI: 10.1109/NUSOD.2016.7547099
Shengbao Wu, Jinbiao Xiao
An efficient wide-angle beam propagation method based on Denman-Beavers iterative scheme for tilted optical waveguides is proposed, where the beam is shifting along the propagation. By shifting the beam opposite to the variation of the waveguide geometry in every step, the propagation in a longitudinally varying waveguide is realized through an equivalent straight waveguide. Significant improvement in efficiency with almost no influence on the accuracy is achieved.
{"title":"An efficient wide-angle beam propagation method using Denman-Beavers iterative scheme for tilted optical waveguides","authors":"Shengbao Wu, Jinbiao Xiao","doi":"10.1109/NUSOD.2016.7547099","DOIUrl":"https://doi.org/10.1109/NUSOD.2016.7547099","url":null,"abstract":"An efficient wide-angle beam propagation method based on Denman-Beavers iterative scheme for tilted optical waveguides is proposed, where the beam is shifting along the propagation. By shifting the beam opposite to the variation of the waveguide geometry in every step, the propagation in a longitudinally varying waveguide is realized through an equivalent straight waveguide. Significant improvement in efficiency with almost no influence on the accuracy is achieved.","PeriodicalId":425705,"journal":{"name":"2016 International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD)","volume":"63 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132243975","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：