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2006 Multiconference on Electronics and Photonics最新文献

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Optical system assembly for cutting and engraving 用于切割和雕刻的光学系统组件
2006 Multiconference on Electronics and Photonics Pub Date : 1900-01-01 DOI: 10.1109/MEP.2006.335633
L. Hernandez, J. Cabrera, B. Lambert, T. Flores, R. Sis, M. Arronte, L. Ponce
{"title":"Optical system assembly for cutting and engraving","authors":"L. Hernandez, J. Cabrera, B. Lambert, T. Flores, R. Sis, M. Arronte, L. Ponce","doi":"10.1109/MEP.2006.335633","DOIUrl":"https://doi.org/10.1109/MEP.2006.335633","url":null,"abstract":"Physical and technical parameters are reported for a laser optical system that is used to cut and engrave. The laser optical system is formed by optical resonant cavity, reflector mirrors, beam expander, and a focal system. The assembly is part of an equipment to cut and engrave by laser via, which is called Ulyses, and was developed in the Laser Technology Laboratory at IMRE-University of Havana. Nd:YAG laser with 1064 nm wavelength is used to obtain 1 ms pulse with energy peak of 1.2 mJ. We have made several engraving with different sizes and wide line, with thicknesses from 0.5 mm to 3 mm in brass and alloying steel.","PeriodicalId":380710,"journal":{"name":"2006 Multiconference on Electronics and Photonics","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131587103","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
DOAV estimation using planar array, a 4D capon approach 平面阵DOAV估计，一种四维capon方法
2006 Multiconference on Electronics and Photonics Pub Date : 1900-01-01 DOI: 10.1109/MEP.2006.335656
Webert Montlouis
{"title":"DOAV estimation using planar array, a 4D capon approach","authors":"Webert Montlouis","doi":"10.1109/MEP.2006.335656","DOIUrl":"https://doi.org/10.1109/MEP.2006.335656","url":null,"abstract":"In this paper a four dimensional Capon approach is proposed to estimate the direction of arrival and angular velocities (DOAV) of moving sources using a rectangular array of antennas. The movement of the source is modeled using linear polynomial approximation in order to estimate the DOA and angular velocities of a point source impinging a signal on the planar array. The resulting four dimensional problem is computation intensive and precludes the use of the approach in real time applications. In order to reduce the computational complexity of the problem, we exploit the geometry of this array and decoupling techniques to perform two two-dimensional searches in parallel instead of a four dimensional search. We also relate the high resolution Capon approach, which we demonstrate herein, to the DOAV formulation presented in this paper. The excellent performance of the combined technique is demonstrated via simulation results.","PeriodicalId":380710,"journal":{"name":"2006 Multiconference on Electronics and Photonics","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133182319","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
Reconstruction of atmospheric vertical reflectivity profile on the base of discrete orthogonal polynomials 基于离散正交多项式的大气垂直反射率剖面重建
2006 Multiconference on Electronics and Photonics Pub Date : 1900-01-01 DOI: 10.1109/MEP.2006.335677
M. Tecpoyotl-Torres, E. Partida-Rivera, I. A. Gonzalez-Roman, O. Ibarra-Manzano, J. Sánchez-Mondragón
{"title":"Reconstruction of atmospheric vertical reflectivity profile on the base of discrete orthogonal polynomials","authors":"M. Tecpoyotl-Torres, E. Partida-Rivera, I. A. Gonzalez-Roman, O. Ibarra-Manzano, J. Sánchez-Mondragón","doi":"10.1109/MEP.2006.335677","DOIUrl":"https://doi.org/10.1109/MEP.2006.335677","url":null,"abstract":"Because of their characteristic large contrast, the transfer problem of meteorological radar images is cumbersome and resource expensive. We present a simple and efficient process to code images based on our experience on discrete data fitting on circular and spherical domains. On either case, the disperse data may lead to large errors unless we use a discrete reduction. We consider, as is common in images analysis, a geometry independent single variable but discrete description, to reduce it using the Chebyshev like polynomials on that discrete set. We analyze several radar images of the type height-distance, to successfully deconstruct and reconstruct them with a reduced error.","PeriodicalId":380710,"journal":{"name":"2006 Multiconference on Electronics and Photonics","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131834635","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: 2
The quality estimation of multiposition measure system for group objects 群目标多位置测量系统的质量估计
2006 Multiconference on Electronics and Photonics Pub Date : 1900-01-01 DOI: 10.1109/MEP.2006.335661
Y. Goritskiy
{"title":"The quality estimation of multiposition measure system for group objects","authors":"Y. Goritskiy","doi":"10.1109/MEP.2006.335661","DOIUrl":"https://doi.org/10.1109/MEP.2006.335661","url":null,"abstract":"The method of quality estimation for measurements data is described. In particular this method allows: at the design stage to choose rationally the amount and location of measurers and at the operation stage to determine the most unfavourable group objects.","PeriodicalId":380710,"journal":{"name":"2006 Multiconference on Electronics and Photonics","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115501799","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
Gain and numerical modelling of rare-earth doped fiber devices 稀土掺杂光纤器件的增益与数值模拟
2006 Multiconference on Electronics and Photonics Pub Date : 1900-01-01 DOI: 10.1109/MEP.2006.335620
A. Castillo-Guzmán, R. Selvas, C. Calles, M. Basurto-Pensado
{"title":"Gain and numerical modelling of rare-earth doped fiber devices","authors":"A. Castillo-Guzmán, R. Selvas, C. Calles, M. Basurto-Pensado","doi":"10.1109/MEP.2006.335620","DOIUrl":"https://doi.org/10.1109/MEP.2006.335620","url":null,"abstract":"We compute the evolution of a signal, pump, backward and forward ASE in a fibre laser in a model that takes into account the modal shape of the radiation fields, the spectral shape of cross sections and of forward and backward propagation ASE, pump power depletion, and saturations due to ASE and or signal. The model can be easily extended to different rare-earth fibre lasers configurations subject to some constrains, since the physics remains the same in many cases. Some spectroscopy data of important fibre fabrication companies and published papers are then used to calculate the amplification, and gain. Three different rare earth doped fibres (namely ytterbium, neodymium, and thulium) were objects of this analysis. Finally, the numerical calculations showed to be in good agreement with reported experimental results (slope efficiency, etc).","PeriodicalId":380710,"journal":{"name":"2006 Multiconference on Electronics and Photonics","volume":"89 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123625115","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
Coupling between metallic microstrips on dielectric sustrates 介电表面金属微带间的耦合
2006 Multiconference on Electronics and Photonics Pub Date : 1900-01-01 DOI: 10.1109/MEP.2006.335630
M. Tecpoyotl-Torres, N. Benitez-Ruiz, M. Torres-Cisneros, O. Ibarra-Manzano, D. May-Arrioja, J. Sánchez-Mondragón
{"title":"Coupling between metallic microstrips on dielectric sustrates","authors":"M. Tecpoyotl-Torres, N. Benitez-Ruiz, M. Torres-Cisneros, O. Ibarra-Manzano, D. May-Arrioja, J. Sánchez-Mondragón","doi":"10.1109/MEP.2006.335630","DOIUrl":"https://doi.org/10.1109/MEP.2006.335630","url":null,"abstract":"The analysis and simulation of the coupling between microstrips is realized, showing the corresponding capacitive or inductive walls. We analyze their interference and the changes produced in the electric and magnetic fields, as well as the distance dependence of the interference. The conductive lines on silicon and their crosstalk, produced when their distance is shorter that their width, is considered. The simulations were carried out with FEMLAB.","PeriodicalId":380710,"journal":{"name":"2006 Multiconference on Electronics and Photonics","volume":"107 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123672394","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
PROGRESS AT CENAM TOWARDS A CS FOUNTAIN CLOCK 在ccs喷泉钟方面的进展
2006 Multiconference on Electronics and Photonics Pub Date : 1900-01-01 DOI: 10.1109/MEP.2006.335642
M. Lopez, E. de Carlos, M. Talavera, S. Lopez
{"title":"PROGRESS AT CENAM TOWARDS A CS FOUNTAIN CLOCK","authors":"M. Lopez, E. de Carlos, M. Talavera, S. Lopez","doi":"10.1109/MEP.2006.335642","DOIUrl":"https://doi.org/10.1109/MEP.2006.335642","url":null,"abstract":"A primary frequency standard based on cold Cs atoms is under development at the Time and Frequency Division of the Centre Nacional de Metrologia, CENAM. A Cs magneto-optical trap has been developed using the standard sigma+sigma$4-horizontal 2-vertical laser beams of 1.9 cm in diameter, with 5 mW each. We use 852 nm, 5 mW, DBR laser as a master laser which is stabilized by saturation spectroscopy. Linewidth of the master laser is 1 MHz. A 50 mW, 852 nm, semiconductor laser is used as slave laser in order to amplify the light of the master laser. The slave laser is stabilized by injection light technique. 12 MHz red shift of the light is performed by double pass through two AOM's. In this paper we present some preliminary results of our MOT characterization as function of MOT's parameters such as intensity of laser beams and gradient of the magnetic field.","PeriodicalId":380710,"journal":{"name":"2006 Multiconference on Electronics and Photonics","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128612004","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
Modeling and optimization of the coupling efficiency for double-clad fiber 双包层光纤耦合效率的建模与优化
2006 Multiconference on Electronics and Photonics Pub Date : 1900-01-01 DOI: 10.1109/MEP.2006.335622
C. Calles, R. Selvas-Aguilar, A. Castillo-Guzmán, J. E. Alatorre
{"title":"Modeling and optimization of the coupling efficiency for double-clad fiber","authors":"C. Calles, R. Selvas-Aguilar, A. Castillo-Guzmán, J. E. Alatorre","doi":"10.1109/MEP.2006.335622","DOIUrl":"https://doi.org/10.1109/MEP.2006.335622","url":null,"abstract":"In this work, we simulate the efficiency of optical power transfer between a 915 nm diode laser, and a double-clad fiber optic. A lenses array allows collimating and focusing the pump energy to the fiber. This model was made using the optical design software OSLO. The result shows a high coupling efficiency of roughly 84%, which can increase the optical input power in fiber optics lasers.","PeriodicalId":380710,"journal":{"name":"2006 Multiconference on Electronics and Photonics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130165752","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
DTCXO output signal spectrum improvement 改进DTCXO输出信号频谱
2006 Multiconference on Electronics and Photonics Pub Date : 1900-01-01 DOI: 10.1109/MEP.2006.335648
A. Lepetaev, A. Kosykh
{"title":"DTCXO output signal spectrum improvement","authors":"A. Lepetaev, A. Kosykh","doi":"10.1109/MEP.2006.335648","DOIUrl":"https://doi.org/10.1109/MEP.2006.335648","url":null,"abstract":"In the given work the structure of the quartz oscillator with digital thermocompensation system synthesizer type is observed. Such oscillators provide high accuracy of thermocompensation and have high long-term stability. Weakness of such oscillators is the spectrum of an output signal. In paper the method of improvement of a spectrum of a target signal of such oscillators is considered, and the results of mathematical modeling confirming its efficiency are resulted.","PeriodicalId":380710,"journal":{"name":"2006 Multiconference on Electronics and Photonics","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129191290","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
SOLAR CONCENTRATOR GUIDANCE 太阳能聚光器引导
2006 Multiconference on Electronics and Photonics Pub Date : 1900-01-01 DOI: 10.1109/MEP.2006.335671
M. Tecpoyotl-Torres, J. Campos-Álvarez, F. Tellez-Alanis, M. Torres-Cisneros, J. Sánchez-Mondragón
{"title":"SOLAR CONCENTRATOR GUIDANCE","authors":"M. Tecpoyotl-Torres, J. Campos-Álvarez, F. Tellez-Alanis, M. Torres-Cisneros, J. Sánchez-Mondragón","doi":"10.1109/MEP.2006.335671","DOIUrl":"https://doi.org/10.1109/MEP.2006.335671","url":null,"abstract":"In this work we discuss the control of a solar concentrator located at Temixco, Morelos, Mexico. This place accounts with the greatest constant illumination in Mexico. For the construction of the concentrator we use a recycled parabolic plate (NEC). This plate was totally covered with aluminum. Its opening diameter is of 332 cm, the focal length is of 83 cm and the opening angle is of 90deg. The geometry of the plate guarantees that the incident beams, will be collected at the focus. We obtain up to 2000degC of temperature concentration with this setup. In order to optimize the operation of the concentrator we use a control circuit designed to track the apparent sun position.","PeriodicalId":380710,"journal":{"name":"2006 Multiconference on Electronics and Photonics","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126292578","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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