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Modeling and Analysis of Double Layer Motheye Anti Reflective Coatings on Organic Light Emitting Diode 有机发光二极管双层母眼防反射涂层的建模与分析
International Conference on Photonics, Optics and Laser Technology Pub Date : 2019-02-25 DOI: 10.5220/0007385201900195
C. M, Sharon C., Vinith P., N. K.
{"title":"Modeling and Analysis of Double Layer Motheye Anti Reflective Coatings on Organic Light Emitting Diode","authors":"C. M, Sharon C., Vinith P., N. K.","doi":"10.5220/0007385201900195","DOIUrl":"https://doi.org/10.5220/0007385201900195","url":null,"abstract":"In this work modeling of double layer motheye anti-reflective coating (DLAR) on organic light emitting diode (OLED) is presented. Finite difference time domain method (FDTD) and Fresnel reflection theory is used to study the reflection and transmission of light of Organic Light Emitting Diode (OLED) using Anti-reflective coatings (ARC). The double layer motheye anti-reflective coatings are incorporated on the surface of glass substrate of an OLED. This is done to reduce the losses existing in OLEDs substrate-air interface. The refractive index (RI) of the top and bottom layer of ARC is engineered and the thickness of the top and bottom layer anti-reflective coatings is modelled using Fresnel’s reflection theory. The effect of double layer motheye ARC on OLED for enhanced far field intensity is analysed. It is found that the far field electric intensity of DLAR based OLED has a significant enhancement compared to OLED with Single layer Antireflective coatings on the glass substrate.","PeriodicalId":294758,"journal":{"name":"International Conference on Photonics, Optics and Laser Technology","volume":"34 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":"125733346","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
Remote Over-saturation Amplification of Optical fiber Monitoring Pulses 光纤监测脉冲的远程过饱和放大
International Conference on Photonics, Optics and Laser Technology Pub Date : 2019-02-25 DOI: 10.5220/0007365401390146
Breno Perlingeiro, Pedro Tovar, F. Calliari, G. Temporão, G. Amaral, J. P. Weid
{"title":"Remote Over-saturation Amplification of Optical fiber Monitoring Pulses","authors":"Breno Perlingeiro, Pedro Tovar, F. Calliari, G. Temporão, G. Amaral, J. P. Weid","doi":"10.5220/0007365401390146","DOIUrl":"https://doi.org/10.5220/0007365401390146","url":null,"abstract":"Optical fibers constitute a staggering portion of the physical layer underlying modern communication networks. To extend the reach of such networks around the globe, long-haul links are necessary. In this context, establishing a connection between two remote locations is only possible due to signal booster stations interspersed along the way. Supervision of such long distance links is of the utmost importance for their reliable operation. For multiplexed networks, high-ratio optical splitters are necessary to distribute the optical signal to multiple users, diminishing severely the transmitted power for each network. In this work, an automated signal boosting remote station for monitoring signals is presented. A Field Programmable Gate Array (FPGA) is part of the remote station and grants its autonomous operation. Making use of a topology capable of reaching over-saturation amplification of semiconductor optical amplifiers (SOA), a higher portion of the optical loss experienced in the splitter is precompensated in the remote node allowing for supervision reach-extension. Approximately 0.5 dB of increased dynamic range is experimentally achieved when comparing the proposed remote station with another one using the same optical amplifier. Even though the obtained extra gain is a minor improvement, the proposed topology paves the way for scalable amplification, allowing for longer reaches.","PeriodicalId":294758,"journal":{"name":"International Conference on Photonics, Optics and Laser Technology","volume":"1 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":"130038412","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
Occlusion-capable Head-mounted Display 具有遮挡能力的头戴式显示器
International Conference on Photonics, Optics and Laser Technology Pub Date : 2019-02-25 DOI: 10.5220/0007612702990302
Kwang-soo Kim, Daerak Heo, Joonku Hahn
{"title":"Occlusion-capable Head-mounted Display","authors":"Kwang-soo Kim, Daerak Heo, Joonku Hahn","doi":"10.5220/0007612702990302","DOIUrl":"https://doi.org/10.5220/0007612702990302","url":null,"abstract":"Head-mounted display (HMD) is regarded as one of the most popular device for providing three-dimensional (3D) contents in virtual reality (VR) or augmented reality (AR). Technologies on HMD have been deeply studied because it has a potential to make the people enjoy 3D contents. In this paper, we propose the application for digital micro-mirror device (DMD) as both the filter and the combiner. DMD has a benefit that it generates many images in short time. The real background image and the image generated by the organic light-emitting diode (OLED) are watched through the DMD, and these two images are combined as one image to generate AR.","PeriodicalId":294758,"journal":{"name":"International Conference on Photonics, Optics and Laser Technology","volume":"53 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":"126369168","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: 7
Fabrication and Characterization of Lead Sulphide Colloidal Quantum Dot Photodetectors for the Near Infrared 近红外硫化铅胶体量子点光电探测器的制备与表征
International Conference on Photonics, Optics and Laser Technology Pub Date : 2019-02-25 DOI: 10.5220/0007412400790084
L. Colace, A. D. Iacovo, Carlo Venettacci, Simone Antonio Bruno
{"title":"Fabrication and Characterization of Lead Sulphide Colloidal Quantum Dot Photodetectors for the Near Infrared","authors":"L. Colace, A. D. Iacovo, Carlo Venettacci, Simone Antonio Bruno","doi":"10.5220/0007412400790084","DOIUrl":"https://doi.org/10.5220/0007412400790084","url":null,"abstract":"Colloidal quantum dots are attracting a lot of interest for the fabrication of optoelectronics devices. In particular, they are suitable for simple, low cost and efficient photodetectors. Here we report on our recent results on lead sulphide colloidal quantum dot photoconductors operating in the near infrared spectral range. We describe the device fabrication process and provide an exhaustive electrical and optical characterization. The photodetectors exhibit a responsivity as high as 46 A/W and specific detectivity of about 1.7·1011 cmHz1/2W-1. Performance are investigated as a function of the voltage bias, device geometry and optical power. An evaluation of the device stability over time was also carried out.","PeriodicalId":294758,"journal":{"name":"International Conference on Photonics, Optics and Laser Technology","volume":"136 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":"131226909","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
Long-Range (>100km) Distributed Vibration Sensor based on Φ-OTDR Technique with Spread Amplification and Detection of Probe Pulses 基于Φ-OTDR扩频放大探测脉冲技术的远程(>100km)分布式振动传感器
International Conference on Photonics, Optics and Laser Technology Pub Date : 2019-02-25 DOI: 10.5220/0007386401960200
D. Sanahuja, J. Preciado, J. Subías, C. Heras, Lucía Hidalgo, Iñigo Salinas, P. Sevillano, J. J. Martínez, A. Villafranca
{"title":"Long-Range (>100km) Distributed Vibration Sensor based on Φ-OTDR Technique with Spread Amplification and Detection of Probe Pulses","authors":"D. Sanahuja, J. Preciado, J. Subías, C. Heras, Lucía Hidalgo, Iñigo Salinas, P. Sevillano, J. J. Martínez, A. Villafranca","doi":"10.5220/0007386401960200","DOIUrl":"https://doi.org/10.5220/0007386401960200","url":null,"abstract":"This paper presents a set of results to demonstrate a long-range (>100km) distributed vibration sensor (DAS) based on the Coherent Optical Time Domain Reflectometry (Φ-OTDR) technique using distributed amplification of the probe pulses and detection of the backscattered traces, which demonstrates great capability to achieve long-range distances with great sensitivity. In this case, optical amplifiers have been placed along the sensing optical fiber, each one followed by a detection stage. Results for some traces detected in each of the spans along the sensing fiber, and some measurements of stimuli produced by a vibration at the end of each of the sections of the sensing fiber, are showed here. This work, framed in the project SACOH (Long-range Distributed Vibration Sensing by Coherent Rayleigh Backscattering), has been carried out in collaboration between the University of Zaragoza and the company APL (Aragon Photonics Labs).","PeriodicalId":294758,"journal":{"name":"International Conference on Photonics, Optics and Laser Technology","volume":"101 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":"131630144","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
Advances in Phase Retrieval by Transport of Intensity Equation 强度方程输运反演相位的研究进展
International Conference on Photonics, Optics and Laser Technology Pub Date : 2019-02-25 DOI: 10.5220/0007374701680173
Dingfu Chen, A. Asundi, L. Sui, Chongtian Huang, Chi Wang, Yingjie Yu
{"title":"Advances in Phase Retrieval by Transport of Intensity Equation","authors":"Dingfu Chen, A. Asundi, L. Sui, Chongtian Huang, Chi Wang, Yingjie Yu","doi":"10.5220/0007374701680173","DOIUrl":"https://doi.org/10.5220/0007374701680173","url":null,"abstract":"There are many factors in the calculations of Transport of Intensity Equation, which may lead to the uncertainty of the retrieved phase. In this paper, effect of these parameters such as defocus distance, focus plane and magnification, on the results is studied. It is hoped that this would provide a more robust and reliable method for phase and optical height measurement. Furthermore, the effect of intensity derivatives calculated using two defocussed images as opposed to multiple images is also considered. A microlens array is chosen as the test sample in a commercial transmissive Transport of Intensity Equation system. From this study, it is concluded that the biggest factor influencing the result is the magnification, which is seen to provided totally different phase value for the same shape. Incorrect defocus distance or in-focus plane also lead to inaccurate reconstruction results while higher order differential provides better and more stable results than traditional two image differential.","PeriodicalId":294758,"journal":{"name":"International Conference on Photonics, Optics and Laser Technology","volume":"81 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":"114299876","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 Bistability in Monolithic Two-sectioned InAs/InP Quantum-dash Laser 单片双截面InAs/InP量子脉冲激光器的光学双稳性
International Conference on Photonics, Optics and Laser Technology Pub Date : 2019-02-25 DOI: 10.5220/0007365100360038
Emad Alkhazraji, M. Alias, M. Z. M. Khan
{"title":"Optical Bistability in Monolithic Two-sectioned InAs/InP Quantum-dash Laser","authors":"Emad Alkhazraji, M. Alias, M. Z. M. Khan","doi":"10.5220/0007365100360038","DOIUrl":"https://doi.org/10.5220/0007365100360038","url":null,"abstract":"Observation of optical bistability in a two-section InAs/InP quantum dash laser is reported. The hysteresis in the optical power-injection current (L-I) characteristics is found to vary with the absorber reverse bias condition. A reverse bias of −0.8 (0) V to the saturable absorber, a hysteresis of 32 (24) mW is measured when the injection current through the gain section is swept forward and backward. Moreover, the bistability is further affirmed through investigation of the lasing emission spectra at specific operating points.","PeriodicalId":294758,"journal":{"name":"International Conference on Photonics, Optics and Laser Technology","volume":"87 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":"126193568","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
Fabrication of Aberration-corrected Diffraction Grating for Soft X-ray Grating Monochromator 软x射线光栅单色仪畸变校正衍射光栅的制备
International Conference on Photonics, Optics and Laser Technology Pub Date : 2019-02-25 DOI: 10.5220/0007312001100113
Yilei Li, Changqing Xie
{"title":"Fabrication of Aberration-corrected Diffraction Grating for Soft X-ray Grating Monochromator","authors":"Yilei Li, Changqing Xie","doi":"10.5220/0007312001100113","DOIUrl":"https://doi.org/10.5220/0007312001100113","url":null,"abstract":"In this work, we present the design and fabrication of an aberration corrected diffraction grating for soft X-ray monochromator. Spherical mirrors, which induce spherical, coma and astigmatic aberration, degrade the performance of a grating monochromator. These aberrations are often corrected by aspherical mirrors. however, aspherical mirrors with high surface accuracy are very difficult to fabricate. We proposed a new diffraction grating, by carefully adjust the positions of grating lines, the wavefront of the diffracted light can be modified and the aberrations can be corrected under certain conditions and the performance of the monochromator can be improved. The aberrations of a typical Czerny-Turner monochromator are discussed in detail and the grating design method is proposed in this work. A lamina type aberration corrected reflective grating for soft X-ray is fabricated using e-beam lithography, and the detailed process is elaborated.","PeriodicalId":294758,"journal":{"name":"International Conference on Photonics, Optics and Laser Technology","volume":"8 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":"124122017","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
Manufacturing of Cylindrical Micro Lenses and Micro Lens Arrays in Fused Silica and Borosilicate Glass using F2-Laser Microstructuring 利用f2激光微结构制造熔融二氧化硅和硼硅玻璃的圆柱微透镜和微透镜阵列
International Conference on Photonics, Optics and Laser Technology Pub Date : 2019-02-25 DOI: 10.5220/0007382300660072
S. Büttner, M. Pfeifer, S. Weissmantel
{"title":"Manufacturing of Cylindrical Micro Lenses and Micro Lens Arrays in Fused Silica and Borosilicate Glass using F2-Laser Microstructuring","authors":"S. Büttner, M. Pfeifer, S. Weissmantel","doi":"10.5220/0007382300660072","DOIUrl":"https://doi.org/10.5220/0007382300660072","url":null,"abstract":"The results of our investigations on direct laser fabrication of cylindrical micro lenses and micro lens arrays in fused silica and borosilicate glass using fluorine laser microstructuring technique will be presented. The process, based on the mask projection technique, enables the generation of almost perfectly curved, smooth surfaces with a defined radius of curvature. In particular, it will be shown that one calculated mask can be used to generate different radii of curvature depending on the laser pulse fluence and the pulse-to-pulse overlap. The surface roughness of the lenses depends on the process parameters as well. To generate continuous transition areas between the lenses in one array, the optimal lens spacing was determined. Moreover, it can be shown, that the surface quality of cylindrical micro lens arrays, made of fused silica, can be improved by CO2 laser smoothing. The minimal reached surface roughness is 4.6 nm RMS.","PeriodicalId":294758,"journal":{"name":"International Conference on Photonics, Optics and Laser Technology","volume":"1 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":"131317312","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
Experimental Implementation of Bias-free Quantum Random Number Generator based on Vacuum Fluctuation 基于真空涨落的无偏量子随机数发生器的实验实现
International Conference on Photonics, Optics and Laser Technology Pub Date : 2019-02-25 DOI: 10.5220/0007569902760282
Ziyong Zheng, Yichen Zhang, Song Yu, Hong Guo
{"title":"Experimental Implementation of Bias-free Quantum Random Number Generator based on Vacuum Fluctuation","authors":"Ziyong Zheng, Yichen Zhang, Song Yu, Hong Guo","doi":"10.5220/0007569902760282","DOIUrl":"https://doi.org/10.5220/0007569902760282","url":null,"abstract":"We experimentally demonstrate a bias-free optical quantum random number generator with real-time randomness extraction to directly output uniform distributed random numbers by measuring the vacuum fluctuation of quantum state. A phase modulator is utilized in the scheme to effectively reduce the influence of deviations between two arms of the generator caused by the imperfect practical devices, which is an innovative solution in the field of quantum random number generator. In the case where the feedback modulation frequency is much faster than the phase jitter, an unbiased result can be obtained by an additional subtraction between the compensation signal and its average value to eliminate residual deviation. A following randomness extractor is applied to eliminate the influence of residual side information introduced by the imperfect devices in practical system.","PeriodicalId":294758,"journal":{"name":"International Conference on Photonics, Optics and Laser Technology","volume":"70 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":"132601771","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
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