Proceedings of LFNM 2005. 7th International Conference on Laser and Fiber-Optical Networks Modeling, 2005.最新文献_第6页

Diffractional losses in corner reflectors 角反射器的衍射损耗

Proceedings of LFNM 2005. 7th International Conference on Laser and Fiber-Optical Networks Modeling, 2005. Pub Date : 2005-12-19 DOI: 10.1109/LFNM.2005.1553236

S. Tarabrin

引用次数: 4

Simplified method of numerical simulation of eigenmodes in two-dimensional media 二维介质中特征模态数值模拟的简化方法

Proceedings of LFNM 2005. 7th International Conference on Laser and Fiber-Optical Networks Modeling, 2005. Pub Date : 2005-12-19 DOI: 10.1109/LFNM.2005.1553193

C. Briskina, M. Ryzhkov, V. Markushev

{"title":"Simplified method of numerical simulation of eigenmodes in two-dimensional media","authors":"C. Briskina, M. Ryzhkov, V. Markushev","doi":"10.1109/LFNM.2005.1553193","DOIUrl":"https://doi.org/10.1109/LFNM.2005.1553193","url":null,"abstract":"Simplified method of eigenmodes simulation in two-dimensional (2D) media based on numerical solution of the stationary wave equation with a given distribution of dielectric permittivity is suggested. By means of discretization the wave equation was reduced to the system of homogeneous linear equations, for that the eigenvalue problem was worked out. The eigenvalues alpha=(2pib/lambda)2, where b is the distance between the nodes of discretization, lambda - the wavelength, were determined and the distribution of relative field amplitudes was calculated. 2D media (ordered and random) were simulated by matrix whose elements take on two different values. One of them corresponds to dielectric permittivity of the material particles, the other to permittivity of the spaces between them. All calculations were made using MATLAB. Different variants of ordered and random media were examined. It was shown that localized modes exist only in disordered systems in a limited range of ratio b/lambda. The dependence of modes character on the value of filling ratio and dielectric permittivity is estimated","PeriodicalId":301144,"journal":{"name":"Proceedings of LFNM 2005. 7th International Conference on Laser and Fiber-Optical Networks Modeling, 2005.","volume":"131 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117054730","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 of surface-emitting grating-outcoupled lasers for mid/far-infrared difference-frequency generation 用于中/远红外差频产生的面发射光栅外耦合激光器建模

Proceedings of LFNM 2005. 7th International Conference on Laser and Fiber-Optical Networks Modeling, 2005. Pub Date : 2005-12-19 DOI: 10.1109/LFNM.2005.1553181

A. Belyanin, V. Kocharovsky, V. Kocharovsky, M. Scully

{"title":"Modeling of surface-emitting grating-outcoupled lasers for mid/far-infrared difference-frequency generation","authors":"A. Belyanin, V. Kocharovsky, V. Kocharovsky, M. Scully","doi":"10.1109/LFNM.2005.1553181","DOIUrl":"https://doi.org/10.1109/LFNM.2005.1553181","url":null,"abstract":"Physical principles and an analytical theory of operation of the hybrid-emitting nonlinear-mixing lasers which are dual-wavelength near-infrared or mid-infrared lasers simultaneously generating mid/far-infrared difference-frequency radiation due to an intracavity mode mixing are developed. In the hybrid-emitting design, the difference-frequency mid/far-infrared signal is surface-emitted by means of a grating, while the dual-wavelength near-infrared or mid-infrared lasing proceeds in a standard edge-emitting geometry. Employing intracavity optical pump fields provides the possibility of the injection current pumping and removes many problems associated with the external optical pump, e.g., drive absorption and spatial inhomogeneity which were encountered in previous works on nonlinear optics in semiconductors. The grating (dielectric or metal) can be implemented either on the surface or in the bulk of any nonlinear-mixing laser, independently on its electrical pumping design, and provides an efficient diffractive (Bragg) coupling of the nonlinear current, generated in the bulk of the heterostructure, to the output mid/far-infrared radiation in the free space","PeriodicalId":301144,"journal":{"name":"Proceedings of LFNM 2005. 7th International Conference on Laser and Fiber-Optical Networks Modeling, 2005.","volume":"91 5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129904658","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

Electrical modulation of bragg reflectors based on porous silicon infiltrated with liquid crystals 基于渗透液晶多孔硅的bragg反射器的电调制

Proceedings of LFNM 2005. 7th International Conference on Laser and Fiber-Optical Networks Modeling, 2005. Pub Date : 2005-12-19 DOI: 10.1109/LFNM.2005.1553215

I. O. Zinkovska, A. Dyomin, E. V. Tkachenko, E. Alvarado-Mendez, V. Tkachenko, O. Ibarro-Manzano, J. Andrade-Lucio, L.A. Sukhoivanov

引用次数: 2

Unwired SAW sensors systems 无线SAW传感器系统

Proceedings of LFNM 2005. 7th International Conference on Laser and Fiber-Optical Networks Modeling, 2005. Pub Date : 2005-12-19 DOI: 10.1109/LFNM.2005.1553225

L. Reindl

{"title":"Unwired SAW sensors systems","authors":"L. Reindl","doi":"10.1109/LFNM.2005.1553225","DOIUrl":"https://doi.org/10.1109/LFNM.2005.1553225","url":null,"abstract":"Surface acoustic wave (SAW) devices can be used as identification and sensor elements (SAW transponders) for measuring physical, chemical and biological quantities such as temperature, pressure, torque, acceleration, humidity, etc. that do not need additional power supply for the sensor elements and may be accessed wirelessly. The complete wireless sensor system includes a transponder, consisting of an antenna wired to a SAW device, and a local reader unit, consisting of a radar transceiver linked to a signal processing and controlling unit. An RF burst transmitted by the radar transceiver is received by the passive SAW transponder. The passive transponder responses with an RF signal - like a radar echo, which can be received by the front-end of the local transceiver. Amplitude, frequency, phase, and time of arrival of this RF response signal carry information about the SAW reflection and propagation mechanisms which in many cases can be directly attributed to the sensor effect for a certain measurand. Due to the high delay time of the SAW transponder in the order of a few us, usually no intersymbol interferences (ISI) due to environmental reflections occur when the system operates in typical, i.e. harsh indoor/outdoor environments. The present work reviews the operating principle of such sensor systems and their state-of-the-art performance by way of a few examples which include the wireless measurement of temperature, pressure, torque, acceleration, tire-road friction, magnetic field, and water content of soil","PeriodicalId":301144,"journal":{"name":"Proceedings of LFNM 2005. 7th International Conference on Laser and Fiber-Optical Networks Modeling, 2005.","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131881580","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

Low noise parametric quartz crystal oscillator 低噪声参数石英晶体振荡器

Proceedings of LFNM 2005. 7th International Conference on Laser and Fiber-Optical Networks Modeling, 2005. Pub Date : 2005-12-19 DOI: 10.1109/LFNM.2005.1553226

S. Galliou, R. Brendel, G. Cibiel

{"title":"Low noise parametric quartz crystal oscillator","authors":"S. Galliou, R. Brendel, G. Cibiel","doi":"10.1109/LFNM.2005.1553226","DOIUrl":"https://doi.org/10.1109/LFNM.2005.1553226","url":null,"abstract":"It is well known for a long time that oscillation in a circuit can be sustained by using a parametric action instead of a conventional amplifier. In that case, the resonant circuit loss is compensated by a periodic change of an oscillation loop parameter at an appropriate frequency (pump action). The modulated parameter should be, for instance, the series capacitance of a RLC resonant circuit by using a varactor diode. In fact, this component basically operates as a noiseless reverse-biased junction expected to be a good candidate for a low noise oscillator circuit design. Parametric amplifiers widely used in the microwave domain are much less used in the RF oscillator circuits, probably because their development leads to a more involved circuitry and the lack of suitable simulation tools. The paper recalls the principle of the parametric oscillator an example of which using a quartz resonator (PXO) will be presented. Various methods used to analyse the behaviour of the PXO are described, and comparison between theory, simulation, and experimental results are discussed. Encouraging power spectral density of phase noise fluctuations obtained so far are demonstrated","PeriodicalId":301144,"journal":{"name":"Proceedings of LFNM 2005. 7th International Conference on Laser and Fiber-Optical Networks Modeling, 2005.","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133806181","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

High power, CW, RT, DFB-CQD lasers emitting at 4-8 microns (Paper has not been available at the publishing time) 发射4-8微米的大功率、连续波、RT、DFB-CQD激光器(论文尚未发表)

Proceedings of LFNM 2005. 7th International Conference on Laser and Fiber-Optical Networks Modeling, 2005. Pub Date : 2005-12-19 DOI: 10.1109/LFNM.2005.1553177

M. Razeghi

引用次数: 0

Collisions of spatial solitons in optically induced lattices 光诱导晶格中空间孤子的碰撞

Proceedings of LFNM 2005. 7th International Conference on Laser and Fiber-Optical Networks Modeling, 2005. Pub Date : 2005-12-19 DOI: 10.1117/12.793328

O. Romanov

引用次数: 0

Study of thermal lensing in a side diode pumped Nd:YAG laser by using boundary element method 用边界元法研究侧面二极管泵浦Nd:YAG激光器的热透镜效应

Proceedings of LFNM 2005. 7th International Conference on Laser and Fiber-Optical Networks Modeling, 2005. Pub Date : 2005-12-19 DOI: 10.1109/LFNM.2005.1553214

M. Sovizi, R. Massudi

引用次数: 3

Bifurcation intramolecular dynamics at photoisomerization and modeling of the robust control of photoisomerization molecules-by light pulses 光异构分子的分岔动力学及光脉冲对光异构分子鲁棒控制的建模

Proceedings of LFNM 2005. 7th International Conference on Laser and Fiber-Optical Networks Modeling, 2005. Pub Date : 2005-12-19 DOI: 10.1109/LFNM.2005.1553234

V. A. Morozov, Y. Dubina, D. E. Doronkin, P. Shorygin

引用次数: 1