2019 IEEE 2nd British and Irish Conference on Optics and Photonics (BICOP)最新文献

Performance of Non-Line-of-Sight Underwater Optical Wireless Communications 水下非视距光无线通信性能研究

2019 IEEE 2nd British and Irish Conference on Optics and Photonics (BICOP) Pub Date : 2019-12-01 DOI: 10.1109/BICOP48819.2019.9059579

A. Umar, M. Leeson

引用次数: 2

Post Fabrication Permanent Laser Trimming of Silicon Nitride Photonic Devices 氮化硅光子器件制造后永久激光修整

2019 IEEE 2nd British and Irish Conference on Optics and Photonics (BICOP) Pub Date : 2019-12-01 DOI: 10.1109/BICOP48819.2019.9059591

T. Kowatari, T. Ishigure

引用次数: 0

Compressive Sensing Detection of RF Signals by All-Optically Generated Binary Random Patterns 基于全光生成二进制随机模式的射频信号压缩感知检测

2019 IEEE 2nd British and Irish Conference on Optics and Photonics (BICOP) Pub Date : 2019-12-01 DOI: 10.1109/BICOP48819.2019.9059595

Ning Jing, Chaitanya K. Mididoddi, Chao Wang

{"title":"Compressive Sensing Detection of RF Signals by All-Optically Generated Binary Random Patterns","authors":"Ning Jing, Chaitanya K. Mididoddi, Chao Wang","doi":"10.1109/BICOP48819.2019.9059595","DOIUrl":"https://doi.org/10.1109/BICOP48819.2019.9059595","url":null,"abstract":"High-speed random bit sequences are crucially important in temporal compressive sensing applications. In this work, we propose a new all-optical binary random patterns generation method for compressive sensing, completely eliminating the use of high-speed electronic circuits. This approach uses photonic time stretched optical pulses as the optical carrier. Spectrum slicing using a tunable ring resonator produces a train of uniformly spaced optical pulses (bits) due to spectrum-to-time mapping in photonic time stretch. Two cascaded dispersive devices with particularly designed nonlinear dispersion profiles are employed to introduce random time delays among optical pulses, leading to a quasi-random binary sequence. The random sampling pulse sequence can be updated by changing the free-spectral range of the ring resonator. The proposed method is verified by numerical simulations. The photonic generated random pulse sequences are used in compressive sensing detection of high-frequency RF signals. In a proof-of-concept demonstration, one-tone and multi-tone microwave signals are successfully reconstructed from four-time compressed measurement data.","PeriodicalId":339012,"journal":{"name":"2019 IEEE 2nd British and Irish Conference on Optics and Photonics (BICOP)","volume":"103 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132201970","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Oligofluorene Truxene Laser Sensor: Towards Bacteria Growth Detection 低聚芴- Truxene激光传感器:用于细菌生长检测

2019 IEEE 2nd British and Irish Conference on Optics and Photonics (BICOP) Pub Date : 2019-12-01 DOI: 10.1109/BICOP48819.2019.9059576

Eilidh Johnston, Anne-Marie Haughey, M. Scullion, A. Kanibolotsky, P. Skabara, N. Laurand

引用次数: 0

Optical Vortex Generation by Nanostructured Vortex Phase Plates Integrated with Single-Mode Fibers 单模光纤集成的纳米结构涡相板产生光涡旋

2019 IEEE 2nd British and Irish Conference on Optics and Photonics (BICOP) Pub Date : 2019-12-01 DOI: 10.1109/BICOP48819.2019.9059582

Hue Thi Nguyen, K. Switkowski, R. Kasztelanic, A. Anuszkiewicz, A. Filipkowski, D. Pysz, R. Stępień, W. Krolikowski, R. Buczyński

引用次数: 0

Temperature Insensitive Waveguide Interferometer based on Subwavelength Gratings 基于亚波长光栅的温度不敏感波导干涉仪

2019 IEEE 2nd British and Irish Conference on Optics and Photonics (BICOP) Pub Date : 2019-12-01 DOI: 10.1109/BICOP48819.2019.9059587

U. A. Korai, Alaine H. Bermello, M. Strain, I. Glesk, A. V. Velasco

引用次数: 0

Demonstration of Intensity Modulation in Hybrid Photonic Crystal Laser 混合光子晶体激光器的强度调制论证

2019 IEEE 2nd British and Irish Conference on Optics and Photonics (BICOP) Pub Date : 2019-12-01 DOI: 10.1109/BICOP48819.2019.9059567

P. Singaravelu, Sharon M. Butler, S. Hegarty, L. O’Faolain

引用次数: 0

An Experimental Analysis of the Effect of Reflections on the Performance of Visible Light Positioning Systems in Warehouses 反射对仓库可见光定位系统性能影响的实验分析

2019 IEEE 2nd British and Irish Conference on Optics and Photonics (BICOP) Pub Date : 2019-12-01 DOI: 10.1109/BICOP48819.2019.9059580

Yousef Almadani, M. Ijaz, Sander Bastiaens, S. Rajbhandari, W. Joseph, D. Plets

{"title":"An Experimental Analysis of the Effect of Reflections on the Performance of Visible Light Positioning Systems in Warehouses","authors":"Yousef Almadani, M. Ijaz, Sander Bastiaens, S. Rajbhandari, W. Joseph, D. Plets","doi":"10.1109/BICOP48819.2019.9059580","DOIUrl":"https://doi.org/10.1109/BICOP48819.2019.9059580","url":null,"abstract":"In this paper, an experimental evaluation of the effect of multipath reflections on two 3D positioning algorithms is experimentally compared. The VLP algorithms use the received signal strength (RSS) for estimating the receiver‘s 3D position without prior knowledge of its height. An experimental overall median accuracy of 10.5 cm was achieved in a 4 × 4 × 4.1 m3 test area. The effect of multipath reflections was recreated using a storage shelf rack that is similar to the ones used in warehouses and was placed 26 cm away from the path. The results demonstrate the degrading effect of reflections on two and three-dimensional positioning systems. The reflection‘s effect was especially severe due to reflections from a metal beam. The achieved median errors using the two different algorithms were 7.5 and 6.6 cm before the addition of a shelf rack, and they increased to 11.7 and 12 cm after the shelf rack was added. Multipath reflections increased the median positioning errors by 112% in 2D systems and by 69% for 3D systems. The paper demonstrates the degrading effect of multipath reflections on VLP systems and highlights the need to take it into consideration when evaluating VLP systems.","PeriodicalId":339012,"journal":{"name":"2019 IEEE 2nd British and Irish Conference on Optics and Photonics (BICOP)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128918423","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Characterisation of an Optical 2D Tracking System 光学二维跟踪系统的特性

2019 IEEE 2nd British and Irish Conference on Optics and Photonics (BICOP) Pub Date : 2019-12-01 DOI: 10.1109/BICOP48819.2019.9059570

Fengping Li, D. Hart, I. Fatadin, R. Ferguson, R. Guilizzoni, S. Harmon

引用次数: 2

Agents based Context-Aware Framework for Facial Identification System 基于agent的人脸识别系统上下文感知框架

2019 IEEE 2nd British and Irish Conference on Optics and Photonics (BICOP) Pub Date : 2019-12-01 DOI: 10.1109/BICOP48819.2019.9059577

Fatina Shukur, H. Sellahewa

{"title":"Agents based Context-Aware Framework for Facial Identification System","authors":"Fatina Shukur, H. Sellahewa","doi":"10.1109/BICOP48819.2019.9059577","DOIUrl":"https://doi.org/10.1109/BICOP48819.2019.9059577","url":null,"abstract":"Research in face recognition systems has been focused on improving algorithm performance under specific conditions or to increase the average performance under heterogeneous conditions. Typical systems do not adjust well to perform at optimal level for a given instant of identification because the algorithms, face feature representations are fixed to achieve the best average result. Therefore, there is a real need to design a context-aware adaptive face identification system that can select the best pre-processing, features, and classifier for any given instance of identification. This paper focuses on the practical implementation and evaluation of our proposed framework [1] [2] that is aware of its operational context and adapt itself to select a suitable approach to identify a given face image. This is by using agent technology to give the system an intelligent and adaptive mechanism to make decisions at the key stages of the facial identification process. The agents will use context information such as environment conditions and application requirements to select the most appropriate pre-processing, features and match scores to optimise the best identification accuracy for a given test image. Within our framework, we propose the use of agents in two strategies: 1) an agent-based adaptive score selection technique as an alternative to the traditional fusion approaches, and 2) an agent-based integrated technique as an improvement to the existing adaptive and non-adaptive techniques. The experimental results presented here demonstrate that our techniques of using agents outperform the traditional fusion strategy that is commonly used in face recognition systems as well as the performance of other existing techniques.","PeriodicalId":339012,"journal":{"name":"2019 IEEE 2nd British and Irish Conference on Optics and Photonics (BICOP)","volume":"157 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124406788","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1