The aim of the paper is to present a digital retinal imaging hand-held system that consist of few elements - a smartphone and a powerful convex lens, encased together in 3D-printed adapter, allowing acquisition of human retina images. The developed post-processing method allows extracting retina vessels from those images.
{"title":"Study on feature analysis used for designing hand-held retina vessels extraction sensor","authors":"Piotr A. Buler, Krzysztof Murawski","doi":"10.1117/12.2537776","DOIUrl":"https://doi.org/10.1117/12.2537776","url":null,"abstract":"The aim of the paper is to present a digital retinal imaging hand-held system that consist of few elements - a smartphone and a powerful convex lens, encased together in 3D-printed adapter, allowing acquisition of human retina images. The developed post-processing method allows extracting retina vessels from those images.","PeriodicalId":50449,"journal":{"name":"Fiber and Integrated Optics","volume":"103 1","pages":"112040I - 112040I-4"},"PeriodicalIF":1.7,"publicationDate":"2019-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90903561","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}
The paper presents the results of thermographic and acoustic analysis of exemplary oil power transformer. Series of thermograms were taken. The higher temperature areas were distinguished on the transformer surfaces under different ambient temperatures. The thermograms indicated hot areas at the top of the transformer, especially under high ambient temperature. There were three areas that emit intensive infrared radiation in the spectrum: 7.5 μm < λ< 13 μm. These areas are located in the upper part of the transformer in zones of intense oil circulation forced by the cooling system. According to thermographic research the state of the transformer and the cooling system was proper. Within acoustic research, two areas were located with sources of magnetoacoustic signals of increased activity with the spectrum 15-65 kHz. Sources of these signals were intense phenomena occurring during the magnetization of ferromagnetic materials. No acoustic emission signal with increased activity from partial discharges were detected. The result of thermographic analysis corresponds with the results of acoustic signals analysis and analyzed together give a broader common description of the examined phenomena.
{"title":"Thermographic analysis of power oil transformer surface hot spot areas combined with analysis of acoustic signals recorded on line","authors":"A. Lisowska-Lis, F. Witos, G. Szerszeń","doi":"10.1117/12.2536700","DOIUrl":"https://doi.org/10.1117/12.2536700","url":null,"abstract":"The paper presents the results of thermographic and acoustic analysis of exemplary oil power transformer. Series of thermograms were taken. The higher temperature areas were distinguished on the transformer surfaces under different ambient temperatures. The thermograms indicated hot areas at the top of the transformer, especially under high ambient temperature. There were three areas that emit intensive infrared radiation in the spectrum: 7.5 μm < λ< 13 μm. These areas are located in the upper part of the transformer in zones of intense oil circulation forced by the cooling system. According to thermographic research the state of the transformer and the cooling system was proper. Within acoustic research, two areas were located with sources of magnetoacoustic signals of increased activity with the spectrum 15-65 kHz. Sources of these signals were intense phenomena occurring during the magnetization of ferromagnetic materials. No acoustic emission signal with increased activity from partial discharges were detected. The result of thermographic analysis corresponds with the results of acoustic signals analysis and analyzed together give a broader common description of the examined phenomena.","PeriodicalId":50449,"journal":{"name":"Fiber and Integrated Optics","volume":"11204 1","pages":"112040B - 112040B-8"},"PeriodicalIF":1.7,"publicationDate":"2019-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77789068","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}
M. Procek, Z. Opilski, Augusto Márquez Maqueda, Xavier Muñoz Berbel, S. Aznar-Cervantes, José Luis Cenis, Carlos Domínguez Horna
In this paper optical properties of silk fibroin (SF) thin films obtained via spin coating method are investigated. Work concentrates on the experimental examination of influence of relative humidity (RH) in the range of 7-90% in air on the changes of SF refractive index, thickness and optical path at room temperature. Spectral ellipsometry and interference methods are used for the SF thin films optical properties measurements. The sensing structure response value, response time and recovery time are presented. The results shows that RH significantly influenced the SF thin films thickness and refractive index what should be taken into account during the designing of optical devices based on SF. It also shows that SF thin films are promising material for room temperature RH sensors.
{"title":"Silk fibroin thin films for optical humidity sensing","authors":"M. Procek, Z. Opilski, Augusto Márquez Maqueda, Xavier Muñoz Berbel, S. Aznar-Cervantes, José Luis Cenis, Carlos Domínguez Horna","doi":"10.1117/12.2536659","DOIUrl":"https://doi.org/10.1117/12.2536659","url":null,"abstract":"In this paper optical properties of silk fibroin (SF) thin films obtained via spin coating method are investigated. Work concentrates on the experimental examination of influence of relative humidity (RH) in the range of 7-90% in air on the changes of SF refractive index, thickness and optical path at room temperature. Spectral ellipsometry and interference methods are used for the SF thin films optical properties measurements. The sensing structure response value, response time and recovery time are presented. The results shows that RH significantly influenced the SF thin films thickness and refractive index what should be taken into account during the designing of optical devices based on SF. It also shows that SF thin films are promising material for room temperature RH sensors.","PeriodicalId":50449,"journal":{"name":"Fiber and Integrated Optics","volume":"39 1","pages":"1120409 - 1120409-5"},"PeriodicalIF":1.7,"publicationDate":"2019-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77798392","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}
This work presents results of analysis of the optical fiber magnetic field sensor with external conversion fabricated in the Department of Optoelectronics of the Silesian University of Technology. Such sensor can be used as optical fiber magnetic field sensors or as the optical fiber current sensors. This study is focused on possibility of using a wide range of optical wavelengths in order to extend the measuring range of this sensor.
{"title":"Analysis of optical magnetic field sensor in wide range of wavelengths","authors":"K. Barczak","doi":"10.1117/12.2536586","DOIUrl":"https://doi.org/10.1117/12.2536586","url":null,"abstract":"This work presents results of analysis of the optical fiber magnetic field sensor with external conversion fabricated in the Department of Optoelectronics of the Silesian University of Technology. Such sensor can be used as optical fiber magnetic field sensors or as the optical fiber current sensors. This study is focused on possibility of using a wide range of optical wavelengths in order to extend the measuring range of this sensor.","PeriodicalId":50449,"journal":{"name":"Fiber and Integrated Optics","volume":"3 1","pages":"1120406 - 1120406-5"},"PeriodicalIF":1.7,"publicationDate":"2019-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74741907","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}
K. Lipski, Ł. Kubiszyn, K. Michalczewski, Krzysztof Murawski, P. Martyniuk
This paper reports on the growth details and preliminary characterization of mid-wave infrared radiation InAsSb bariodes. The main device parameters were measured for barrier photodetector heterostructures with three different InAsSb absorber thicknesses: 1 µm (sample no. 1); 1.70 μm (sample no. 2); 2.56 μm (sample no. 3) and one non intentionally doped, 1.70 μm (sample no. 4). The crystallographic structure, responsivity, I-V curves and detectivity characterization were performed.
{"title":"Growth and preliminary characterization of InAsSb photodiodes for mid-wave infrared detection","authors":"K. Lipski, Ł. Kubiszyn, K. Michalczewski, Krzysztof Murawski, P. Martyniuk","doi":"10.1117/12.2536801","DOIUrl":"https://doi.org/10.1117/12.2536801","url":null,"abstract":"This paper reports on the growth details and preliminary characterization of mid-wave infrared radiation InAsSb bariodes. The main device parameters were measured for barrier photodetector heterostructures with three different InAsSb absorber thicknesses: 1 µm (sample no. 1); 1.70 μm (sample no. 2); 2.56 μm (sample no. 3) and one non intentionally doped, 1.70 μm (sample no. 4). The crystallographic structure, responsivity, I-V curves and detectivity characterization were performed.","PeriodicalId":50449,"journal":{"name":"Fiber and Integrated Optics","volume":"1 1","pages":"112040E - 112040E-4"},"PeriodicalIF":1.7,"publicationDate":"2019-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89092578","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}
D. Nguyen, X. Dinh, Xu Le, V. Nguyen, M. Trippenbach
We present the study of the dynamics of a two-ring waveguide structure with space-dependent coupling, linear gain and nonlinear absorption; the system that can be implemented in polariton condensates, optical waveguides and nanocavities. We find that due to the modulation instability, it is possible to observe several complex nonlinear phenomena, including spontaneous symmetry breaking, stable inhomogeneous states, oscillating states (limit cycle) and even chaotic dynamics. We compare two systems of coupled rings, with one and two symmetrically located coupling centres.
{"title":"On the nonlinear dynamics of coupled micro-resonators","authors":"D. Nguyen, X. Dinh, Xu Le, V. Nguyen, M. Trippenbach","doi":"10.1117/12.2537262","DOIUrl":"https://doi.org/10.1117/12.2537262","url":null,"abstract":"We present the study of the dynamics of a two-ring waveguide structure with space-dependent coupling, linear gain and nonlinear absorption; the system that can be implemented in polariton condensates, optical waveguides and nanocavities. We find that due to the modulation instability, it is possible to observe several complex nonlinear phenomena, including spontaneous symmetry breaking, stable inhomogeneous states, oscillating states (limit cycle) and even chaotic dynamics. We compare two systems of coupled rings, with one and two symmetrically located coupling centres.","PeriodicalId":50449,"journal":{"name":"Fiber and Integrated Optics","volume":"23 1","pages":"112040F - 112040F-6"},"PeriodicalIF":1.7,"publicationDate":"2019-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85052715","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}
In this paper, we are showing that the reduced graphene oxide could be used as a sensing layer in a chemoresitive gas sensors. The results of the investigation during which the sensing structure was affected by hydrogen and nitrogen dioxide in nitrogen and synthetic air in various temperatures are presented. We have observed that in certain temperature range, the resistance of the sensing structure was increased when hydrogen was in the gas mixture and was decreased when nitrogen dioxide was in the mixture, compared to the state without both gases. Moreover, we are showing that the humidity has no influence for the resistance of structure during the measurements with hydrogen. The measurements of the resistance has also been supplemented by the images of the structure obtained using scanning electron microscopy.
{"title":"The sensitivity of reduced graphene oxide to H2 and NO2","authors":"S. Drewniak, M. Procek","doi":"10.1117/12.2537739","DOIUrl":"https://doi.org/10.1117/12.2537739","url":null,"abstract":"In this paper, we are showing that the reduced graphene oxide could be used as a sensing layer in a chemoresitive gas sensors. The results of the investigation during which the sensing structure was affected by hydrogen and nitrogen dioxide in nitrogen and synthetic air in various temperatures are presented. We have observed that in certain temperature range, the resistance of the sensing structure was increased when hydrogen was in the gas mixture and was decreased when nitrogen dioxide was in the mixture, compared to the state without both gases. Moreover, we are showing that the humidity has no influence for the resistance of structure during the measurements with hydrogen. The measurements of the resistance has also been supplemented by the images of the structure obtained using scanning electron microscopy.","PeriodicalId":50449,"journal":{"name":"Fiber and Integrated Optics","volume":"94 1 1","pages":"112040H - 112040H-4"},"PeriodicalIF":1.7,"publicationDate":"2019-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87666023","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}
Pub Date : 2019-09-03DOI: 10.1080/01468030.2019.1659460
Lemi Bedjisa Dano, San-Liang Lee, Wen-Hsien Fang
ABSTRACT Optical broadband directional couplers (BDCs) are indispensable components for providing wavelength-insensitive and flexible optical splitting in the construction of functional photonic integrated circuits (PICs). The existing BDC device structures are usually required to determine specific design parameters for different waveguide structures and operating wavelength bands. To circumvent this dilemma, here we present a novel optimization procedure to realize a compact BDC by using the asymmetric curved waveguide structure. The versatile particle swarm optimization (PSO) technique is adopted to determine the optimal device parameters of the compact and broadband asymmetric curved directional couplers (ACDCs) for different coupling ratios. In order to reduce the computational complexity in the optimization, the 3D ACDC is first converted to an equivalent 2D structure by using the modified effective index method (MEIM). The device parameters of the equivalent 2D ACDC are optimized by the PSO with the objective function of a wavelength flattened coupling ratio. Afterward, the optimized 2D structure is converted to the 3D one by including the waveguide thickness. To cope with the approximation error by the MEIM, the 3D ACDC is further fine-tuned by sweeping one of the device parameters with the full 3D simulation but keeping all of the other optimal parameters obtained from the PSO intact. As a result, a DC with broad bandwidth of 100 nm is obtained over the wavelength range from 1.50 µm to 1.60 µm with a very small coupling length of 6 µm. The semi-optimized ACDC is used to construct an unbalanced Mach-Zehnder interferometer (MZI) and a Sagnac loop mirror (SLM), both of which show high extinction ratios of >25 dB over a broad wavelength range with low excess loss.
{"title":"Simplified Approach for Optimizing Optical Asymmetric Curved Waveguides of Broadband Directional Couplers","authors":"Lemi Bedjisa Dano, San-Liang Lee, Wen-Hsien Fang","doi":"10.1080/01468030.2019.1659460","DOIUrl":"https://doi.org/10.1080/01468030.2019.1659460","url":null,"abstract":"ABSTRACT Optical broadband directional couplers (BDCs) are indispensable components for providing wavelength-insensitive and flexible optical splitting in the construction of functional photonic integrated circuits (PICs). The existing BDC device structures are usually required to determine specific design parameters for different waveguide structures and operating wavelength bands. To circumvent this dilemma, here we present a novel optimization procedure to realize a compact BDC by using the asymmetric curved waveguide structure. The versatile particle swarm optimization (PSO) technique is adopted to determine the optimal device parameters of the compact and broadband asymmetric curved directional couplers (ACDCs) for different coupling ratios. In order to reduce the computational complexity in the optimization, the 3D ACDC is first converted to an equivalent 2D structure by using the modified effective index method (MEIM). The device parameters of the equivalent 2D ACDC are optimized by the PSO with the objective function of a wavelength flattened coupling ratio. Afterward, the optimized 2D structure is converted to the 3D one by including the waveguide thickness. To cope with the approximation error by the MEIM, the 3D ACDC is further fine-tuned by sweeping one of the device parameters with the full 3D simulation but keeping all of the other optimal parameters obtained from the PSO intact. As a result, a DC with broad bandwidth of 100 nm is obtained over the wavelength range from 1.50 µm to 1.60 µm with a very small coupling length of 6 µm. The semi-optimized ACDC is used to construct an unbalanced Mach-Zehnder interferometer (MZI) and a Sagnac loop mirror (SLM), both of which show high extinction ratios of >25 dB over a broad wavelength range with low excess loss.","PeriodicalId":50449,"journal":{"name":"Fiber and Integrated Optics","volume":"50 1","pages":"285 - 303"},"PeriodicalIF":1.7,"publicationDate":"2019-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86141691","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}
Pub Date : 2019-08-08DOI: 10.1080/01468030.2019.1652868
V. Fallahi, M. Mohammadi, M. Seifouri
ABSTRACT Ring resonators have always been referred to as a highly flexible structure for designing optical devices. In this paper, we have designed and evaluated two 8-channel optical demultiplexers using photonic crystal ring resonators. The purpose of this study is to investigate the flexibility of this type of resonator for designing and manufacturing optical devices based on photonic crystals. To the extent that we have investigated the literature, there is no report so far on such a study. For this purpose, two structures with the same structural parameters, but only with a difference in the type of lattice constant (square or triangular) are used. Both structures have a common photonic band gap within a proper range for telecommunication applications used in wavelength-division multiplexing (WDM) systems. Both designed structures have an average crosstalk of −26 dB. For the demultiplexer structure with a square lattice constant, the quality factor and the transmission coefficient are 3,046 and 93.7% respectively, and its channel spacing is 1.97 nm. For the structure with a triangular lattice constant, the quality factor and the transmission coefficient are 1577.7 and 94.5%, respectively and its channel spacing is equal to 4 nm. To obtain the photonic band gap of the structures, the plane wave expansion (PWE) method is used and the output spectrum of the structures is obtained using the finite-difference time-domain (FDTD) method. The good results obtained in this study is through designing and simulating optical demultiplexer structures only by creating a change in the type of lattice constant used. This undoubtedly justifies the high flexibility of ring resonators, when used in the design of optical devices, as well as their suitability for the use in WDM systems
{"title":"Design of Two 8-Channel Optical Demultiplexers Using 2D Photonic Crystal Homogeneous Ring Resonators","authors":"V. Fallahi, M. Mohammadi, M. Seifouri","doi":"10.1080/01468030.2019.1652868","DOIUrl":"https://doi.org/10.1080/01468030.2019.1652868","url":null,"abstract":"ABSTRACT Ring resonators have always been referred to as a highly flexible structure for designing optical devices. In this paper, we have designed and evaluated two 8-channel optical demultiplexers using photonic crystal ring resonators. The purpose of this study is to investigate the flexibility of this type of resonator for designing and manufacturing optical devices based on photonic crystals. To the extent that we have investigated the literature, there is no report so far on such a study. For this purpose, two structures with the same structural parameters, but only with a difference in the type of lattice constant (square or triangular) are used. Both structures have a common photonic band gap within a proper range for telecommunication applications used in wavelength-division multiplexing (WDM) systems. Both designed structures have an average crosstalk of −26 dB. For the demultiplexer structure with a square lattice constant, the quality factor and the transmission coefficient are 3,046 and 93.7% respectively, and its channel spacing is 1.97 nm. For the structure with a triangular lattice constant, the quality factor and the transmission coefficient are 1577.7 and 94.5%, respectively and its channel spacing is equal to 4 nm. To obtain the photonic band gap of the structures, the plane wave expansion (PWE) method is used and the output spectrum of the structures is obtained using the finite-difference time-domain (FDTD) method. The good results obtained in this study is through designing and simulating optical demultiplexer structures only by creating a change in the type of lattice constant used. This undoubtedly justifies the high flexibility of ring resonators, when used in the design of optical devices, as well as their suitability for the use in WDM systems","PeriodicalId":50449,"journal":{"name":"Fiber and Integrated Optics","volume":"7 1","pages":"271 - 284"},"PeriodicalIF":1.7,"publicationDate":"2019-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81947077","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}
Pub Date : 2019-07-11DOI: 10.1080/01468030.2019.1641252
E. Tego, F. Matera, V. Attanasio, E. Nastri
ABSTRACT We experimentally verify a slicing approach, operating in a PBB-TE core and PON access architecture, based on the mPlane measurement plane, also adopted to manage slicing instances. The key element of this paper is the proposal and the implementation of the Slicing End Point (SEP), that is the client element to set up the slice path, and, at the same time, it allows us to monitor the network performance. The slices are based on VLAN/MPLS/PBB-TE logical paths and they can be managed for the implementation of different class of services. The whole SDN mPlane architecture allows us manage the slices also with restoration procedures. Furthermore, the tests on latency confirm the advantages of the NG-PON2 accesses for 5G backhauling also in this slicing configuration.
本文通过实验验证了一种基于mPlane测量平面的切片方法，该方法在PBB-TE核心和PON接入架构下运行，并用于切片实例的管理。本文的核心内容是切片端点(Slicing End Point, SEP)的提出和实现，SEP是设置切片路径的客户端元素，同时也允许我们对网络性能进行监控。这些切片基于VLAN/MPLS/PBB-TE逻辑路径，可以对它们进行管理，以实现不同类别的业务。整个SDN mPlane架构允许我们通过恢复过程来管理切片。此外，延迟测试也证实了在这种切片配置中，NG-PON2访问5G回程的优势。
{"title":"Experimental Verification on a Slicing Management Based on the mPlane Monitoring Plane with GPON Comparison","authors":"E. Tego, F. Matera, V. Attanasio, E. Nastri","doi":"10.1080/01468030.2019.1641252","DOIUrl":"https://doi.org/10.1080/01468030.2019.1641252","url":null,"abstract":"ABSTRACT We experimentally verify a slicing approach, operating in a PBB-TE core and PON access architecture, based on the mPlane measurement plane, also adopted to manage slicing instances. The key element of this paper is the proposal and the implementation of the Slicing End Point (SEP), that is the client element to set up the slice path, and, at the same time, it allows us to monitor the network performance. The slices are based on VLAN/MPLS/PBB-TE logical paths and they can be managed for the implementation of different class of services. The whole SDN mPlane architecture allows us manage the slices also with restoration procedures. Furthermore, the tests on latency confirm the advantages of the NG-PON2 accesses for 5G backhauling also in this slicing configuration.","PeriodicalId":50449,"journal":{"name":"Fiber and Integrated Optics","volume":"13 1","pages":"259 - 270"},"PeriodicalIF":1.7,"publicationDate":"2019-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73496487","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}
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