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2018 IEEE British and Irish Conference on Optics and Photonics (BICOP)最新文献

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Unsupervised and supervised machine learning for performance improvement of NFT optical transmission 用于改进NFT光传输性能的无监督和有监督机器学习
2018 IEEE British and Irish Conference on Optics and Photonics (BICOP) Pub Date : 2018-12-01 DOI: 10.1109/BICOP.2018.8658274
O. Kotlyar, M. Pankratova, M. Kamalian, A. Vasylchenkova, J. Prilepsky, S. Turitsyn
{"title":"Unsupervised and supervised machine learning for performance improvement of NFT optical transmission","authors":"O. Kotlyar, M. Pankratova, M. Kamalian, A. Vasylchenkova, J. Prilepsky, S. Turitsyn","doi":"10.1109/BICOP.2018.8658274","DOIUrl":"https://doi.org/10.1109/BICOP.2018.8658274","url":null,"abstract":"We apply both the unsupervised and supervised machine learning (ML) methods, in particular, the k-means clustering and support vector machine (SVM) to improve the performance of the optical communication system based on the nonlinear Fourier transform (NFT). The NFT system employs the continuous NFT spectrum part to carry data up to 1000 km using the 16-QAM OFDM modulation. We classify the performance of the system in terms of BER versus signal power dependence. We show that the NFT system performance can be improved considerably by means of the ML techniques and that the more advanced SVM method typically outperforms the k-means clustering.","PeriodicalId":145258,"journal":{"name":"2018 IEEE British and Irish Conference on Optics and Photonics (BICOP)","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124312837","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
The CAOS Camera – Unleashing the Power of Full Spectrum Extreme Linear Dynamic Ranging Imaging CAOS相机-释放全光谱极限线性动态测距成像的力量
2018 IEEE British and Irish Conference on Optics and Photonics (BICOP) Pub Date : 2018-12-01 DOI: 10.1109/BICOP.2018.8658317
N. Riza, M. Mazhar
{"title":"The CAOS Camera – Unleashing the Power of Full Spectrum Extreme Linear Dynamic Ranging Imaging","authors":"N. Riza, M. Mazhar","doi":"10.1109/BICOP.2018.8658317","DOIUrl":"https://doi.org/10.1109/BICOP.2018.8658317","url":null,"abstract":"The CAOS camera invention is described that allows high security full spectrum (350 nm to 2700 nm) extreme linear dynamic range bright target imaging. First time experiments highlight real-time simultaneous tracking of bright visible and infrared laser beams.","PeriodicalId":145258,"journal":{"name":"2018 IEEE British and Irish Conference on Optics and Photonics (BICOP)","volume":"1099 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122914576","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: 4
Develoment of All-Semiconductor Photonic Crystal Surface Emitting Lasers 全半导体光子晶体表面发射激光器的发展
2018 IEEE British and Irish Conference on Optics and Photonics (BICOP) Pub Date : 2018-12-01 DOI: 10.1109/BICOP.2018.8658345
Richard J. E. Taylor, Guangrui Li, B. King, Z. Bian, A. Boldin, B. Stevens, T. Roberts, I. Tooley, S. Thoms, J. Sarma, D. Childs, R. Hogg
{"title":"Develoment of All-Semiconductor Photonic Crystal Surface Emitting Lasers","authors":"Richard J. E. Taylor, Guangrui Li, B. King, Z. Bian, A. Boldin, B. Stevens, T. Roberts, I. Tooley, S. Thoms, J. Sarma, D. Childs, R. Hogg","doi":"10.1109/BICOP.2018.8658345","DOIUrl":"https://doi.org/10.1109/BICOP.2018.8658345","url":null,"abstract":"In this paper we discuss the development of all-semiconductor photonic crystal surface emitting lasers. These devices offer novel routes to coherently coupled arrays which promise previously unachievable levels of brightness and a route to all-electronic beam steering from a single element device.","PeriodicalId":145258,"journal":{"name":"2018 IEEE British and Irish Conference on Optics and Photonics (BICOP)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121038069","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
Welcome to the first IEEE British and Irish Conference on Optics and Photonics (BICOP) 欢迎参加首届IEEE英国和爱尔兰光学与光子学会议(BICOP)
2018 IEEE British and Irish Conference on Optics and Photonics (BICOP) Pub Date : 2018-12-01 DOI: 10.1109/bicop.2018.8658351
{"title":"Welcome to the first IEEE British and Irish Conference on Optics and Photonics (BICOP)","authors":"","doi":"10.1109/bicop.2018.8658351","DOIUrl":"https://doi.org/10.1109/bicop.2018.8658351","url":null,"abstract":"","PeriodicalId":145258,"journal":{"name":"2018 IEEE British and Irish Conference on Optics and Photonics (BICOP)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121186837","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
Application of the Mosquito Method to Polymer Optical Coupling Devices 蚊子法在聚合物光学耦合器件中的应用
2018 IEEE British and Irish Conference on Optics and Photonics (BICOP) Pub Date : 2018-12-01 DOI: 10.1109/BICOP.2018.8658326
Jun Nakamura, T. Ishigure
{"title":"Application of the Mosquito Method to Polymer Optical Coupling Devices","authors":"Jun Nakamura, T. Ishigure","doi":"10.1109/BICOP.2018.8658326","DOIUrl":"https://doi.org/10.1109/BICOP.2018.8658326","url":null,"abstract":"We develop a fabrication method of polymer optical waveguide in which the cores are aligned in the vertical direction to the substrate. Applying lightwave propagation simulation, several fabrication processes are investigated to realize a low-loss lens-free optical coupler to multimode fibers (MMF). Finally, an about 750-μm long graded-index core is directly formed on a VCSEL chip by which high coupling efficiency between the VCSEL and MMF is attained.","PeriodicalId":145258,"journal":{"name":"2018 IEEE British and Irish Conference on Optics and Photonics (BICOP)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117101178","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
Enhanced Extinction Ratio in an Asymmetric Mode-Locked Laser by Modulating Two Saturable Absorbers 通过调制两个可饱和吸收体提高非对称锁模激光器的消光比
2018 IEEE British and Irish Conference on Optics and Photonics (BICOP) Pub Date : 2018-12-01 DOI: 10.1109/BICOP.2018.8658332
Lars Nielsen, M. Heck
{"title":"Enhanced Extinction Ratio in an Asymmetric Mode-Locked Laser by Modulating Two Saturable Absorbers","authors":"Lars Nielsen, M. Heck","doi":"10.1109/BICOP.2018.8658332","DOIUrl":"https://doi.org/10.1109/BICOP.2018.8658332","url":null,"abstract":"The complexity of photonic integrated circuits is increasing, and the need for on-chip optical isolators becomes important in order to maintain stable on-chip laser light generation. A way to circumvent the need for such isolators is to make the on-chip lasers insensitive to feedback. A first step towards this goal could be to operate a ring laser unidirectionally. In this paper the extinction ratio between the two propagation directions in an asymmetric ring semiconductor mode-locked laser with two saturable absorbers (SAs), operating at 19.342 GHz, is experimentally investigated when modulated. The results show that the extinction ratio is increased by around 1.4 dB when the SAs are modulated with a phase difference of 90 degrees in the favored direction. According to an extrapolation of the data, unidirectional operation should be possible if the SAs are modulated with a larger depth. The modulation depth in this work is expected to be limited by the limited signal transmission through the external RF interface circuitry.","PeriodicalId":145258,"journal":{"name":"2018 IEEE British and Irish Conference on Optics and Photonics (BICOP)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115293851","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
Optical Wireless Underwater Channel Modelling in the Presence of Turbulence 湍流存在下的光学无线水下信道建模
2018 IEEE British and Irish Conference on Optics and Photonics (BICOP) Pub Date : 2018-12-01 DOI: 10.1109/BICOP.2018.8658289
Callum T. Geldard, J. Thompson, E. Leitgeb, W. Popoola
{"title":"Optical Wireless Underwater Channel Modelling in the Presence of Turbulence","authors":"Callum T. Geldard, J. Thompson, E. Leitgeb, W. Popoola","doi":"10.1109/BICOP.2018.8658289","DOIUrl":"https://doi.org/10.1109/BICOP.2018.8658289","url":null,"abstract":"A method of modelling turbulence as a scattering phenomenon in the simulation of underwater photon propagation is presented in this paper. The model treats oceanic turbulence as an optical scattering phenomenon rather than as a fading parameter. The channel impulse responses both with and without turbulence are generated and it is shown that the delay spread increases with turbulence. The double gamma function is then applied to these responses as an appropriate channel model. From this model the frequency response is calculated for three different turbulence values in turbid harbour water, showing that the channel bandwidth decreases as turbulence strength increases. Finally, the distribution of the total number of received photons within a symbol duration in different conditions of weak turbulence are shown to follow a normal distribution.","PeriodicalId":145258,"journal":{"name":"2018 IEEE British and Irish Conference on Optics and Photonics (BICOP)","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124788960","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: 11
Progress towards recalibration of spectrographs 摄谱仪重新校准的进展
2018 IEEE British and Irish Conference on Optics and Photonics (BICOP) Pub Date : 2018-12-01 DOI: 10.1109/BICOP.2018.8658336
Akhil Kallepalli, U. Soori, D. James, M. Richardson
{"title":"Progress towards recalibration of spectrographs","authors":"Akhil Kallepalli, U. Soori, D. James, M. Richardson","doi":"10.1109/BICOP.2018.8658336","DOIUrl":"https://doi.org/10.1109/BICOP.2018.8658336","url":null,"abstract":"The spectral resolution of a spectrograph depends on the input slit width, the diffraction grating grooves and the number of imaging sensor/detector pixels. Due to the proprietary nature of spectrograph designs, recalibration by end-users can be challenging. Most calibration procedures currently published are applicable to in-house instruments or spectrographs with access to the internal specifications. Narrowing the input slit improves the resolution but also reduces the throughput of the imaging system. We attempted to recalibrate an Offner-based spectrograph by using a larger detector plane (an imaging system with a larger sensor), to vary the distance along the focal plane; and by utilising lens optics. Basic experiments were conducted by varying the distance from the exit window and inserting a lens to magnify the spectrograph output onto the larger detector plane. We concluded that the calibration could not be achieved using simple optics within the scope of our experiments. This article addresses a gap in literature that does not present the research community with the unsuccessful steps that are not applicable to similar problem statements. The alternative would be to rely on reflective optics, but this approach may reduce portability.","PeriodicalId":145258,"journal":{"name":"2018 IEEE British and Irish Conference on Optics and Photonics (BICOP)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123149932","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
Modeling Electroabsorption Modulated Laser for Digital Optical Transmission 数字光传输的电吸收调制激光器建模
2018 IEEE British and Irish Conference on Optics and Photonics (BICOP) Pub Date : 2018-12-01 DOI: 10.1109/BICOP.2018.8658362
M. Belkin, V. Golovin, A. Sigov, Y. Tyschuk
{"title":"Modeling Electroabsorption Modulated Laser for Digital Optical Transmission","authors":"M. Belkin, V. Golovin, A. Sigov, Y. Tyschuk","doi":"10.1109/BICOP.2018.8658362","DOIUrl":"https://doi.org/10.1109/BICOP.2018.8658362","url":null,"abstract":"We propose and discuss a new equivalent circuit model to computer-aided design a high-speed electroabsorption modulated laser for the upcoming wireless telecom systems using well-known microwave-electronic software tool NI AWRDE. To validate the model some simulation experiments were conducted including light-current, emitted wavelength, and large-signal intermodulation distortion, were studied. As an outcome of the conducted simulation experiments, the key parameters and characteristics correspond to the real product analogues. Another simulation experiment was referred to fiber-optics transmission of 10 Gbaud per second 16QAM digital signal on the RF carrier of 25 GHz over the single-mode optical fiber of the different length. In the result, the simulated values of error vector magnitudes were less than 1% in back-to-back configuration and met standard requirements for passive optical networks at practical output signal-to-noise ratio of 50 dB in the fiber length range up to 10 km.","PeriodicalId":145258,"journal":{"name":"2018 IEEE British and Irish Conference on Optics and Photonics (BICOP)","volume":"104 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121989262","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
On the Impact of the Physical Topology on the Optical Network Performance 物理拓扑对光网络性能的影响
2018 IEEE British and Irish Conference on Optics and Photonics (BICOP) Pub Date : 2018-12-01 DOI: 10.1109/BICOP.2018.8658361
R. S. Tessinari, M. Paiva, M. Monteiro, M. Segatto, A. Garcia, G. Kanellos, R. Nejabati, D. Simeonidou
{"title":"On the Impact of the Physical Topology on the Optical Network Performance","authors":"R. S. Tessinari, M. Paiva, M. Monteiro, M. Segatto, A. Garcia, G. Kanellos, R. Nejabati, D. Simeonidou","doi":"10.1109/BICOP.2018.8658361","DOIUrl":"https://doi.org/10.1109/BICOP.2018.8658361","url":null,"abstract":"Network performance optimization is a poly-parametric task where usually the physical network topology is already provided and given. The latter is mainly defined by the geographical needs and the business models developed in a region that reflect the particular data traffic requirements. However, during the design of a new network, the physical topology can be considered as an additional parameter, and this work aims to study the potential impact of a network topology in the performance of the network. Two relevant metrics of optical WDM networks are evaluated, throughput and blocking ratio. Through the simulation of 350k implementations of more than 500 network topologies, we demonstrate a performance variation on networks with the same number of nodes and edges up to 73.9% on the total network load under same levels of requests blocking ratio, and up to 17.3% on the network throughput.","PeriodicalId":145258,"journal":{"name":"2018 IEEE British and Irish Conference on Optics and Photonics (BICOP)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126365580","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: 10
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