International Conference on Photonics, Optics and Laser Technology最新文献

Towards Terabit LiFi Networking 迈向太比特LiFi网络

International Conference on Photonics, Optics and Laser Technology Pub Date : 2021-11-27 DOI: 10.5220/0010955000003121

A. Qidan, T. El-Gorashi, J. Elmirghani

{"title":"Towards Terabit LiFi Networking","authors":"A. Qidan, T. El-Gorashi, J. Elmirghani","doi":"10.5220/0010955000003121","DOIUrl":"https://doi.org/10.5220/0010955000003121","url":null,"abstract":": Light Fidelity (Li-Fi) is a networked version of optical wireless communication (OWC), which is a strong candidate to fulﬁll the unprecedented increase in user-trafﬁc expected in the near future. In OWC, a high number of optical access points (APs) is usually deployed on the ceiling of an indoor environment to serve multiple users with different demands. Despite the high data rates of OWC networks, due to the use of the optical band for data transmission, they cannot replace current radio frequency (RF) wireless networks where OWC has several issues including the small converge area of an optical AP, the lack of uplink transmission and high blockage probabilities. However, OWC has the potential to support the requirements in the next generation (6G) of wireless communications. In this context, heterogeneous optical/RF networks can be considered to overcome the limitations of OWC and RF systems, while providing a high quality of service in terms of achievable data rates and coverage. In this work, infrared lasers, vertical-cavity surface-emitting(VCSEL) lasers, are used as the key elements of optical APs for serving multiple users. Then, transmission schemes such as zero forcing (ZF) and blind interference alignment (BIA) are introduced to manage multi-user interference and maximize the sum rate of users. Moreover, a WiFi system is considered to provide uplink transmission and serve users that experience a low signal to noise ratio (SNR) from the optical system. To use the resources of the heterogeneous optical/RF network efﬁciently, we derive a utility-based objective function that aims to maximize the overall sum rate of the network. This complex problem can be solved using distributed algorithms to provide sub-optimal solutions with low complexity. The results show that the sum rate of the proposed hybrid network is higher than the standalone optical network, using different transmission schemes.","PeriodicalId":294758,"journal":{"name":"International Conference on Photonics, Optics and Laser Technology","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122655556","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: 8

Dielectric Nanophotonics for Reconfigurable Planar Optics and Biosensing 介质纳米光子学用于可重构平面光学和生物传感

International Conference on Photonics, Optics and Laser Technology Pub Date : 2021-03-05 DOI: 10.1117/12.2577456

R. Quidant

引用次数: 0

Cascaded Tunable Optical Delay Line based on a Racetrack Resonator with Tunable Coupling and Stable Wavelength 基于可调谐耦合和波长稳定的赛道谐振腔的级联可调谐光延迟线

International Conference on Photonics, Optics and Laser Technology Pub Date : 2019-12-13 DOI: 10.3390/app9245483

S. G. Hailu, San-Liang Lee

引用次数: 2

Two-dimensional Laser Scanner with Low Mechanical Cross Coupling based on Piezoelectric Actuators 基于压电作动器的低机械交叉耦合二维激光扫描仪

International Conference on Photonics, Optics and Laser Technology Pub Date : 2019-06-09 DOI: 10.5220/0007360301290133

Wei Chen, Dong Luo, Yu-Rong Liang, Peng Liu, Liangpei Chen, Yizhou Zhang

引用次数: 1

Sparse Image Reconstruction for the SPIDER Optical Interferometric Telescope SPIDER光学干涉望远镜稀疏图像重建

International Conference on Photonics, Optics and Laser Technology Pub Date : 2019-03-13 DOI: 10.5220/0010322601040109

L. Pratley, J. McEwen

{"title":"Sparse Image Reconstruction for the SPIDER Optical Interferometric Telescope","authors":"L. Pratley, J. McEwen","doi":"10.5220/0010322601040109","DOIUrl":"https://doi.org/10.5220/0010322601040109","url":null,"abstract":"The concept of a recently proposed small-scale interferometric optical imaging device, an instrument known as the Segmented Planar Imaging Detector for Electro-optical Reconnaissance (SPIDER), is of great interest for its possible applications in astronomy and space science. Due to low weight, low power consumption, and high resolution, the SPIDER telescope could replace the large space telescopes that exist today. Unlike traditional optical interferometry the SPIDER accurately retrieves both phase and amplitude information, making the measurement process analogous to a radio interferometer. State of the art sparse radio interferometric image reconstruction techniques have been gaining traction in radio astronomy and reconstruct accurate images of the radio sky. In this work we describe algorithms from radio interferometric imaging and sparse image reconstruction and demonstrate their application to the SPIDER concept telescope through simulated observation and reconstruction of the optical sky. Such algorithms are important for providing high fidelity images from SPIDER observations, helping to power the SPIDER concept for scientific and astronomical analysis.","PeriodicalId":294758,"journal":{"name":"International Conference on Photonics, Optics and Laser Technology","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114922810","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: 5

Rigorous Derivation of Temporal Coupled Mode Theory Expressions for Travelling and Standing Wave Resonators Coupled to Optical Waveguides 光波导耦合行波和驻波谐振器时间耦合模理论表达式的严格推导

International Conference on Photonics, Optics and Laser Technology Pub Date : 2019-02-25 DOI: 10.5220/0007387302010208

Arezoo Zarif, M. Memarian, K. Mehrany

引用次数: 1

Holistic Excitation of a Grating-coupled Waveguide at the Inner Wall of a Glass Tube 玻璃管内壁光栅耦合波导的整体激励

International Conference on Photonics, Optics and Laser Technology Pub Date : 2019-02-25 DOI: 10.5220/0007406802250228

Erika Koussi, H. Bruhier, I. Verrier, C. Veillas, T. Kampfe, N. Crespo-Monteiro, D. Jamon, O. Parriaux, Y. Jourlin

引用次数: 0

Implementation of a Visible Light Communication Link: Li-Fi with Smartphone Detection 可见光通信链路的实现:Li-Fi与智能手机检测

International Conference on Photonics, Optics and Laser Technology Pub Date : 2019-02-25 DOI: 10.5220/0007691303150319

David Andrade, J. Gomes, P. André

引用次数: 1

Empirical Study of Helical Bend Loss in Optical Fibers 光纤螺旋弯曲损耗的实证研究

International Conference on Photonics, Optics and Laser Technology Pub Date : 2019-02-25 DOI: 10.5220/0007407402290234

Ashitosh Velamuri, I. Sharma, S. Gupta, P. Krishnamurthy

{"title":"Empirical Study of Helical Bend Loss in Optical Fibers","authors":"Ashitosh Velamuri, I. Sharma, S. Gupta, P. Krishnamurthy","doi":"10.5220/0007407402290234","DOIUrl":"https://doi.org/10.5220/0007407402290234","url":null,"abstract":"We propose a method to estimate helical bend loss in optical fibers and extend the method to predict the loss in a different fiber. In our approach, we consider the in-plane bend loss as the reference and approximate the loss curve as an exponential function decaying with bend diameter. For in-plane bends, we compute loss over the bend diameter range of 9.5−19.5 mm at 1550 nm wavelength. For helical bends, we perform experiments for the same range of bend diameters and pitch values of 2,4,5,7 and 10 mm. We extend the exponential function approximation to the experimental measurements of helically wound fibers and obtain an empirical formula to estimate the helical bend loss. We find that for a given bend diameter, the bend loss increases initially with the pitch, attains a maximum value and then decreases below the corresponding in-plane bend loss. We extend the empirical formula developed for a single fiber with a specific refractive index to evaluate the helical bend loss in another fiber. We conduct the in-plane bend loss experiments for the new fiber and repeat the exponential fit and obtain fit coefficients. We calculate the fit coefficients for different pitch values using empirical formula and predict the helical bend loss. We compare the predicted loss with corresponding experimental measurements, which are in good agreement.","PeriodicalId":294758,"journal":{"name":"International Conference on Photonics, Optics and Laser Technology","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123186853","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

Achromatic Cascade Optical System with Hybrid Lenses for Distortion-compensated Multifocusing of Ultrashort Pulse Beams 用于超短脉冲光束畸变补偿多聚焦的混合透镜消色差级联光学系统

International Conference on Photonics, Optics and Laser Technology Pub Date : 2019-02-25 DOI: 10.5220/0007470202410247

J. Amako, H. Nakano

引用次数: 0