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Applications of Photonic Technology最新文献

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Analyzing dispersive nonlinear optical devices by using FDTD method 用时域有限差分法分析色散非线性光学器件
Applications of Photonic Technology Pub Date : 2003-02-01 DOI: 10.1117/12.473809
Jiazong Zhang
{"title":"Analyzing dispersive nonlinear optical devices by using FDTD method","authors":"Jiazong Zhang","doi":"10.1117/12.473809","DOIUrl":"https://doi.org/10.1117/12.473809","url":null,"abstract":"Based on the exciting results recently achieved using the finite-difference time domain (FDTD) method, an explicit two dimensional FDTD package for modeling wave propagation in certain kinds of nonlinear media such as 2nd-order nonlinearity, 3rd-order nonlinearity, Kerr effect, Raman effect is proposed. The proposed scheme adopts the polarization equation (PE) philosophy, where all nonlinear effects are expressed by nonlinear polarization terms in the time-space domain Maxwell's equation. The Lorentz dispersive effect in time domain polarization term can also be easily coupled in this scheme, which will lead to a dispersive nonlinearity simulation. Typical examples for pulsed beam self-focusing, scattering, harmonic response are presented in this paper.","PeriodicalId":342015,"journal":{"name":"Applications of Photonic Technology","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133282478","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
CW fiber Raman laser emitting at 1.125 micron 发射波长1.125微米的连续波光纤拉曼激光器
Applications of Photonic Technology Pub Date : 2003-02-01 DOI: 10.1117/12.473946
M. Drolet, R. Vallée
{"title":"CW fiber Raman laser emitting at 1.125 micron","authors":"M. Drolet, R. Vallée","doi":"10.1117/12.473946","DOIUrl":"https://doi.org/10.1117/12.473946","url":null,"abstract":"In this paper, we report experimental results on a CW fiber Raman laser oscillating at 1.125μm. A CW Nd:YAG laser at 1.064μm injected in a 100m long silica fiber produces Stokes waves oscillating in a cavity formed by two fiber Bragg gratings (FBGs) written at both ends of the fiber. The fiber length and the output coupling were chosen after a numerical analysis for an optimization of the output power. An output power of 1.5W at 1.125μm has been experimentally obtained.","PeriodicalId":342015,"journal":{"name":"Applications of Photonic Technology","volume":"183 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134151298","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
In-line Fraunhofer holographic system for measuring particle distribution of fast-moving particles 用于测量快速运动粒子分布的直线弗劳恩霍夫全息系统
Applications of Photonic Technology Pub Date : 2003-02-01 DOI: 10.1117/12.474373
Zeren Li, Guozhi Wang, Zuoyou Li, Feng Wang, Zhenxiong Luo
{"title":"In-line Fraunhofer holographic system for measuring particle distribution of fast-moving particles","authors":"Zeren Li, Guozhi Wang, Zuoyou Li, Feng Wang, Zhenxiong Luo","doi":"10.1117/12.474373","DOIUrl":"https://doi.org/10.1117/12.474373","url":null,"abstract":"An in-line Fraunhofer holographic system which can measure the size distribution and the mass of particles ejected from a target surface at speeds up to 5.0 km/s is described. Observed particle diameters range from 4μm to several hudnreds μm, and teh depth of field is 10mm to 15mm. In order to avoid damage of the hologram, an optical relay system is used to relay the interference pattern 90cm. After the hologram has been made a spatially filtered laser is used to reconstruct a real image of particles over a 3D volume. Then the real particle images from the 3D volume are digitized via a CCD camera with 1280×1024 pixels. We have used this system to measure static or slow moving particle field, the experimental results show that the system's performance are very good.","PeriodicalId":342015,"journal":{"name":"Applications of Photonic Technology","volume":"92 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115018148","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
Time-resolved chirp measurement of electro-absorption and directly modulated lasers 电吸收和直接调制激光器的时间分辨啁啾测量
Applications of Photonic Technology Pub Date : 2003-02-01 DOI: 10.1117/12.474330
J. Dupre, J. Stimple
{"title":"Time-resolved chirp measurement of electro-absorption and directly modulated lasers","authors":"J. Dupre, J. Stimple","doi":"10.1117/12.474330","DOIUrl":"https://doi.org/10.1117/12.474330","url":null,"abstract":"Understanding the effects of chirp on the transmission of signals is of great importance to the system designer. Chirp can have two separate detrimental outcomes in a typical transmission system. The first is that the chirp can interact with the fiber dispersion to create a power penalty, which ultimately limits the number of channels or the distance over which the signal can propagate in today's WDM systems. The second is that chirp can broaden the transmitted spectrum limiting the channel spacing by interfering with adjacent channels even in a short-haul ultra-dense WDM environment. This paper covers time-resolved chirp measurements and the transient and adiabatic chirp properties of electro-absorption and directly modulated lasers. It also discusses methodologies to predict transmission path penalty from time-resolved chirp measurements.","PeriodicalId":342015,"journal":{"name":"Applications of Photonic Technology","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115370424","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
Ultrafast photoconductive switches integrated with electrical waveguides of low-k polyimide 集成了低k聚酰亚胺电波导的超快光导开关
Applications of Photonic Technology Pub Date : 2003-02-01 DOI: 10.1117/12.474331
S. Yagi, T. Itatani, H. Kawanami, S. Gorwadkar, T. Uemura, T. Fukushima, H. Itatani, M. Tomoi, M. Tacano
{"title":"Ultrafast photoconductive switches integrated with electrical waveguides of low-k polyimide","authors":"S. Yagi, T. Itatani, H. Kawanami, S. Gorwadkar, T. Uemura, T. Fukushima, H. Itatani, M. Tomoi, M. Tacano","doi":"10.1117/12.474331","DOIUrl":"https://doi.org/10.1117/12.474331","url":null,"abstract":"We have fabricated ultrafast electrical waveguides with low-k polyimide integrated with ultrafast photoconductive switches formed by nano-anodization process for the first time. Electrical signals are affected by nonlinear capacitance of p-n junctions in this waveguides, and pass through the low-k polyimide, so the dielectric loss and the radiation loss are dramatically reduced. The electrical pulses as short as 290 fs were measured on this waveguide by an electro-optic sampling system based on a femtosecond laser.","PeriodicalId":342015,"journal":{"name":"Applications of Photonic Technology","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116445930","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
Continuous surface-relief microoptical elements and their replication in polymer and other materials 连续表面浮雕微光学元件及其在聚合物和其他材料中的复制
Applications of Photonic Technology Pub Date : 2003-02-01 DOI: 10.1117/12.474410
P. Topart, Nathalie Bacon, H. Jerominek, D. Asselin, R. Beaulieu, S. Leclair
{"title":"Continuous surface-relief microoptical elements and their replication in polymer and other materials","authors":"P. Topart, Nathalie Bacon, H. Jerominek, D. Asselin, R. Beaulieu, S. Leclair","doi":"10.1117/12.474410","DOIUrl":"https://doi.org/10.1117/12.474410","url":null,"abstract":"This paper describes the enabling technologies developed at INO to generate continuous surface-relief profile diffractive and refractive optical elements in photoresist. Grey-scale mask photolithography based on high-energy beam sensitive glass and laser direct writing have been used to fabricate aspherical refractive and diffractive microlenses respectively. Properties of refractive microlenses are compared to those fabricated by the standard reflow technique. The replication of such elements by injection molding and UV-embossing in acrylic and custom hybrid sol-gel glasses respectively is described. Fidelity of replication in the various processing steps is given. Optical performance of aspherical microlenses with f-numbers between 0.69 and 7 as well as thermo-mechanical properties of organic/inorganic materials are given.","PeriodicalId":342015,"journal":{"name":"Applications of Photonic Technology","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121545801","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
Surface texture characterization using a chroma meter 使用色度计表征表面纹理
Applications of Photonic Technology Pub Date : 2003-02-01 DOI: 10.1117/12.474041
Z. Zhong
{"title":"Surface texture characterization using a chroma meter","authors":"Z. Zhong","doi":"10.1117/12.474041","DOIUrl":"https://doi.org/10.1117/12.474041","url":null,"abstract":"This paper discusses surface texture characterization of silicon, silicon carbide and some metal surfaces using a Chroma Meter. The specimen surfaces were obtained with various machining methods. Lightness (brightness) has a good correlation with surface roughness and could be used as an in-process/in-cycle/post-process technique for surface texture characterization. Surfaces with lower roughness values had lower lightness values.","PeriodicalId":342015,"journal":{"name":"Applications of Photonic Technology","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123208143","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
Matrix analysis for fiber lasers with hybrid birefringence resonators 混合双折射腔光纤激光器的矩阵分析
Applications of Photonic Technology Pub Date : 2003-02-01 DOI: 10.1117/12.474305
I. Cruz Torres, J. Hernández-Cordero
{"title":"Matrix analysis for fiber lasers with hybrid birefringence resonators","authors":"I. Cruz Torres, J. Hernández-Cordero","doi":"10.1117/12.474305","DOIUrl":"https://doi.org/10.1117/12.474305","url":null,"abstract":"Although population dynamics play an important role on the characteristics of laser emission, the polarization properties of fiber lasers are established by the birefringence of the laser cavity. While the use of fibers with low birefringence (Low-Bi) will yield polarization features that can be easily altered by means of polarization controllers, fibers with high birefringence (Hi-Bi) yield more stable polarization features. Although in most cases stable oscillation frequencies from a fiber laser are desired, some applications require adjustments either on the spectral or the polarization characteristics of the laser output. This can be easily achieved by combining both Hi-Bi and Low-Bi fibers to form a hybrid birefringence resonator. In this paper we study the transmission characteristics for these fiber resonators using Jones matrix analysis. This yields information on relevant laser characteristics as a function of different parameters for the Low-Bi and Hi-Bi fibers (e.g., birefringence, length and orientation of the birefringent axes). In particular, we focus on the theoretical predictions on tunability of polarization mode beating frequencies (PMB) as a function of wavelength and effective birefringence of the laser cavity. The results are compared with experiments involving fiber polarimetric sensors, tunable optical generators of microwaves and wavelength measurement of fiber lasers through PMB frequencies.","PeriodicalId":342015,"journal":{"name":"Applications of Photonic Technology","volume":"263 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130326988","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
Femtosecond laser beam shaping with structured thin-film elements 结构薄膜元件飞秒激光束整形
Applications of Photonic Technology Pub Date : 2003-02-01 DOI: 10.1117/12.473829
R. Grunwald, V. Kebbel, U. Griebner, U. Neumann, A. Kummrow, E. Nibbering, M. Rini, M. Piché, G. Rousseau, M. Fortin
{"title":"Femtosecond laser beam shaping with structured thin-film elements","authors":"R. Grunwald, V. Kebbel, U. Griebner, U. Neumann, A. Kummrow, E. Nibbering, M. Rini, M. Piché, G. Rousseau, M. Fortin","doi":"10.1117/12.473829","DOIUrl":"https://doi.org/10.1117/12.473829","url":null,"abstract":"Spectral interference caused by structured thin-film components has been used for shaping and characterization of few-cycle femtosecond laser beams. Array structures enable spatially resolved measurements of coherence and wavefront. The generation of spatially and temporally localized optical wavepackets with reflective and refractive axicons was demonstrated in theory and experiment.","PeriodicalId":342015,"journal":{"name":"Applications of Photonic Technology","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121027520","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
Influence of dehydration on strength of silica fibers 脱水对硅纤维强度的影响
Applications of Photonic Technology Pub Date : 2003-02-01 DOI: 10.1117/12.474872
N. Gougeon, M. Poulain, R. El Abdi
{"title":"Influence of dehydration on strength of silica fibers","authors":"N. Gougeon, M. Poulain, R. El Abdi","doi":"10.1117/12.474872","DOIUrl":"https://doi.org/10.1117/12.474872","url":null,"abstract":"Strength and dynamic fatigue behavior of silica optical fibers has been measured in very dry atmosphere. Bare and coated fibers were compared to characterize the influence of the polymer. The stress corrosion susceptibility parameter has been evaluated. Subcritical crack growth effect was found to be different in coated and bare fibers while their strength was found to be close. The strength measurement have been done using a two-point bending set up.","PeriodicalId":342015,"journal":{"name":"Applications of Photonic Technology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128920265","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
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