International Conference on Photonics Solutions最新文献

Quadrant-mapping-based computer generated hologram compression 基于象限映射的计算机生成全息图压缩

International Conference on Photonics Solutions Pub Date : 2020-03-11 DOI: 10.1117/12.2552991

Nelwin Raj N. R., K. G., Meril Cyriac, S. M. K.

引用次数: 0

Three-dimensional VLC indoor positioning system using smart device camera receiver with image processing technique 三维VLC室内定位系统采用智能设备摄像机接收机结合图像处理技术

International Conference on Photonics Solutions Pub Date : 2020-03-11 DOI: 10.1117/12.2553400

P. Rattakorn, U. Mankong, S. Potha

引用次数: 0

Analysis and optimization of Raman scattering for malaria infected blood 疟疾感染血液拉曼散射分析及优化

International Conference on Photonics Solutions Pub Date : 2020-03-11 DOI: 10.1117/12.2552998

Gunganist Kongklad, Tana Taechalertpatsarn, R. Chitaree

{"title":"Analysis and optimization of Raman scattering for malaria infected blood","authors":"Gunganist Kongklad, Tana Taechalertpatsarn, R. Chitaree","doi":"10.1117/12.2552998","DOIUrl":"https://doi.org/10.1117/12.2552998","url":null,"abstract":"Malaria is a disease generally found in a tropical area including Thailand. It is widely known that the biological technique such as PCR normally used for an accurate detection of malaria-infected blood requiring a considerable period to repeat the process. Raman spectroscopy is considered to be an alternative method for the malaria infected blood detection. Theoretically, Raman spectroscopy is based on the scattering process that is less likely in a normal situation. Therefore, an enhancing technique known as “surface-enhanced Raman scattering (SERS)” is required for the signal augmentation. The SERS provides the enhancement of the electric field near the surface of the substrate. With the application of the technique, the main target of this research focuses on the comparison of the SER Raman spectra of the normal red blood cell and malaria infected red blood cell. However, only a single spectrum cannot provide a clear difference between the normal and the infected blood. An additional tool for even more effective discrimination was provided by using PCA analysis. In the sample preparation stage, the spin coating process was applied to spread the red blood cells uniformly on the surface. In addition, the spectra of the red blood cells including media were collected in various conditions in terms of the excitation wavelengths and the types of substrate. This additional information can be used as references for any red blood cell related investigation using Raman spectroscopy.","PeriodicalId":260932,"journal":{"name":"International Conference on Photonics Solutions","volume":"254 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133359313","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

Precision longitudinal alignment of matter-wave near-field interferometer 物质波近场干涉仪的精密纵向对准

International Conference on Photonics Solutions Pub Date : 2020-03-11 DOI: 10.1117/12.2552945

S. Buathong, S. Srisuphaphon, S. Deachapunya

{"title":"Precision longitudinal alignment of matter-wave near-field interferometer","authors":"S. Buathong, S. Srisuphaphon, S. Deachapunya","doi":"10.1117/12.2552945","DOIUrl":"https://doi.org/10.1117/12.2552945","url":null,"abstract":"Matter-wave near-field interferometric experiments require interference contrast as high as possible in order to extract information from the interference patterns. One of the tasks to accomplish this requirement is to align the distances between gratings and detection. We present here a method for this precision alignment. An electron beam as a matter-wave source, a diffraction grating, and mask grating were used in this study. The simulations show that the longitudinal scanning of the mask grating with the detection can specify the exact location of the near-field or so-called Talbot distance with the condition of using the gratings with small open fractions. Therefore, the various open fractions were done in the calculation. Due to the lack of commercial gratings with small open fractions, a technique of two overlapping gratings can be applied for changing arbitrary grating shapes and open fractions. We conclude that smaller open fraction of the gratings gives better longitudinal alignment. The results show that the Talbot distance is located at the highest throughput behind the gratings. The present study can provide a method for implementing matter-wave diffraction experiments in the future.","PeriodicalId":260932,"journal":{"name":"International Conference on Photonics Solutions","volume":"436 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132592521","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

The design of high birefringence hollow core with nested anti-resonance nodeless fiber 嵌套抗共振无节点光纤高双折射空芯的设计

International Conference on Photonics Solutions Pub Date : 2020-03-11 DOI: 10.1117/12.2553003

N. Phanchat, R. Chitaree

{"title":"The design of high birefringence hollow core with nested anti-resonance nodeless fiber","authors":"N. Phanchat, R. Chitaree","doi":"10.1117/12.2553003","DOIUrl":"https://doi.org/10.1117/12.2553003","url":null,"abstract":"We present the design of a high birefringence hollow core with nested anti-resonance nodeless fiber (HC-NANF). This model is designed for terahertz guidance made by TOPAS copolymer. The finite element method is used to study the properties of the proposed fiber: effective material loss, confinement loss, and birefringence. In this model, the cladding consists of four circular anti-resonant tubes: two tubes aligning in the horizontal axis and two tubes aligning in the vertical axis. Each circular anti-resonant tube consists of two circular nested tubes. First, we optimize the thickness of circular nested tubes due to anti-resonance reflecting guidance mechanism to achieve the lowest loss. The simulation results show that the thickness of 0.09 mm is suitable for operating at 1 THz. To achieve the birefringence, we attempted to rotate the inner circular nested tube with two patterns: symmetric and asymmetric rotations. The simulation results show that only the asymmetric rotation can provide the birefringence in the structure. It also shows that the birefringence can be adjusted by rotating the inner circular nested tube with respect to the core radius. Finally, the orthogonal birefringence of the proposed design from HC-NANF is found to be higher than 10-4. This study offers an alternative model to provide the birefringence in THz regime, which might be relevant for future polarization related applications.","PeriodicalId":260932,"journal":{"name":"International Conference on Photonics Solutions","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128557801","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

A numerical investigation of broadband absorption of TE-polarized wave in photonic hypercrystal 光子超晶体te偏振波宽带吸收的数值研究

International Conference on Photonics Solutions Pub Date : 2020-03-11 DOI: 10.1117/12.2553005

N. Reangchan, S. Plaipichit, C. Puttharugsa, P. Buranasiri, S. Wicharn

{"title":"A numerical investigation of broadband absorption of TE-polarized wave in photonic hypercrystal","authors":"N. Reangchan, S. Plaipichit, C. Puttharugsa, P. Buranasiri, S. Wicharn","doi":"10.1117/12.2553005","DOIUrl":"https://doi.org/10.1117/12.2553005","url":null,"abstract":"In this study, we numerically investigated the absorption properties in one-dimensional photonic hypercrystal (PHC), which was consisted of a periodically alternating layers of hyperbolic metamaterial and dielectric material. The first layer of the unit cell of the PHC is a hyperbolic metamaterial (HMM), which made of the two-dimensional square lattice arrangement of gold (Au) nanowire embedded in indium tin oxide (ITO) host and the second layer is the same dielectric material used in metamaterial system. First, the nanowire array hyperbolic metamaterial was designed for providing high extinction coefficient in visible light to near infrared region by optimizing the radius of each Au nanowires. Then, a transfer-matrix method (TMM) was used as the numerical tool for calculating the absorption spectrum of the PHC for both TE- and TM-polarization. The numerical results showed that the PHC structure provides the widest absorption spectrum in the range of 500 to 1,000 nm for TE-polarized wave incidence. The bandwidth of interesting absorption spectrum is increased when increasing the layer thickness of the composed dielectric material. The level of absorbance of PHC is enhanced by increasing the number of periods. Conversely, the absorbance of PHC structure is decreased with the greater incident angle. Finally, the fill factor of nanowire hyperbolic metamaterial will make the shifting of absorption spectrum into long-wavelength region when it is decreased. Meanwhile, the absorption of TM-polarized wave in PHC structure is too low when comparing with TE-wave case. Due to the influence of the above parameters on the absorption spectrum for TE-polarized wave, so the PHC may be used as the TE broadband absorber for energy harvesting application.","PeriodicalId":260932,"journal":{"name":"International Conference on Photonics Solutions","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127104108","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

Plasmon resonance of spherical and ellipsoidal gold particles in hexagonal-plasmonic arrays 六边形等离子体阵列中球形和椭球状金粒子的等离子体共振

International Conference on Photonics Solutions Pub Date : 2020-03-11 DOI: 10.1117/12.2552985

N. Sitpathom, J. Dawes, T. Muangnapoh, P. Kumnorkaew, S. Suwana, A. Sinsarp, T. Osotchan

{"title":"Plasmon resonance of spherical and ellipsoidal gold particles in hexagonal-plasmonic arrays","authors":"N. Sitpathom, J. Dawes, T. Muangnapoh, P. Kumnorkaew, S. Suwana, A. Sinsarp, T. Osotchan","doi":"10.1117/12.2552985","DOIUrl":"https://doi.org/10.1117/12.2552985","url":null,"abstract":"Plasmonic field enhancement localized around metallic particles is useful for improving sensitivity in sensing applications. In this research, we used finite-difference time-domain modelling to study plasmonic field enhancement in an array of polystyrene particles covered with gold, to understand the effect of the incident polarization and the particle shape. The gold particle shapes were changed from a perfect sphere to an ellipsoid with the vertical height varying as 930 nm, 880 nm and 830 nm, while the horizontal diameter was fixed at 930 nm. The simulated structure was composed of gold spheres arranged in a hexagonal-close-packed array on an 80-nm thick gold film. When the metallic spheres were arranged on the gold film the plasmonic enhancement was up to 1.8 times greater than for the array without a metallic film. The plasmon resonances of the array were strongest at the bridge connections between the particles, and at the surface of the particles without connections. Where there were no particle-particle connections, the resonant field distributions had one, two, three and higher nodes. In addition, the absorption spectra for various sized rectangular structures with gold particles at the center were investigated to determine the effect of the lattice period on the wavelengths of resonance. The results showed that the lattice period did not greatly perturb the resonance modes for this structure. This study aids improved design of plasmonic-photonic crystals with micron-scale periods for sensing applications.","PeriodicalId":260932,"journal":{"name":"International Conference on Photonics Solutions","volume":"11331 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129033982","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

Improvement of acquisition time using high speed MEMS bolometer in active imaging 利用高速MEMS辐射热计改进主动成像的采集时间

International Conference on Photonics Solutions Pub Date : 2020-03-11 DOI: 10.1117/12.2553016

I. Morohashi, Ya Zhang, Boqi Qiu, N. Sekine, K. Hirakawa, I. Hosako

{"title":"Improvement of acquisition time using high speed MEMS bolometer in active imaging","authors":"I. Morohashi, Ya Zhang, Boqi Qiu, N. Sekine, K. Hirakawa, I. Hosako","doi":"10.1117/12.2553016","DOIUrl":"https://doi.org/10.1117/12.2553016","url":null,"abstract":"For establishing terahertz (THz) imaging with rapid scan, the influence of the response speed of a microelectromechanical system (MEMS) bolometer on the image quality have been evaluated and compared it with a pyroelectric detector (PED). The MEMS bolometer was operated with the frequency modulation detection mode in which the frequency shift due to the illumination of the laser light is tracked by a phase-locked loop (PLL) system. In the detection system using the PED, the laser light was chopped by an optical chopper and output signals were measured by a lock-in amplifier. Output signals from the detection systems were recorded by an analog-to-digital converter (ADC). An etched metal bookmark was used for the imaging object and imaging was made by a combination of continuous scans in the X direction and step scans in the Z direction. In imaging using the MEMS bolometer under a stage speed of 25 mm/s, the fine structures composed of very small holes much smaller than 1 mm were clearly observed. The images acquired by the MEMS bolometer were almost the same quality regardless of the stage speed, while in the case of the PED the images were distorted with increasing the stage speed. This is due to the bandwidth of the detectors. These results imply that the MEMS bolometer enables to acquire images with rapid scanning.","PeriodicalId":260932,"journal":{"name":"International Conference on Photonics Solutions","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126255360","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

A novel method for camera calibration and image alignment of a thermal/visible image fusion system 一种热/可见光图像融合系统摄像机标定和图像对准的新方法

International Conference on Photonics Solutions Pub Date : 2020-03-11 DOI: 10.1117/12.2553042

P. Bamrungthai, Prasatporn Wongkamchang

引用次数: 3

Diffuse interstellar band from the spectrum of auto-ionizing helium 来自自电离氦光谱的弥漫星际带

International Conference on Photonics Solutions Pub Date : 2020-03-11 DOI: 10.1117/12.2550805

Aekawit Kittiya, A. Watcharangkool, S. Wannawichian, Waranont Anukool

引用次数: 0