The International Commission for Optics最新文献_第4页

Progress in the design of chromatic null screens to test cylindrical parabolic concentrators 圆柱形抛物面聚光器彩色零屏设计进展

The International Commission for Optics Pub Date : 2011-10-25 DOI: 10.1117/12.903315

Josslyn Beltrán-Madrigal, R. Díaz-Uribe

引用次数: 10

Plasmon excitation using a dielectric slab with diffusion type photorefractive nonlinearity 具有扩散型光折变非线性的介质板激发等离子体激元

The International Commission for Optics Pub Date : 2011-10-25 DOI: 10.1117/12.903383

J. Sánchez-Mondragón, D. Ceballos-Herrera, A. Alejo-Molina, D. May-Arrioja, O. Magaña-Loaiza, N. Lozano-Crisóstomo

引用次数: 0

Theory and simulation of a two coupled-cavities fiber laser 双腔耦合光纤激光器的理论与仿真

The International Commission for Optics Pub Date : 2011-10-25 DOI: 10.1117/12.903177

Emanuel Paulucci, N. A. Russo, E. E. Sicre, R. Duchowicz

{"title":"Theory and simulation of a two coupled-cavities fiber laser","authors":"Emanuel Paulucci, N. A. Russo, E. E. Sicre, R. Duchowicz","doi":"10.1117/12.903177","DOIUrl":"https://doi.org/10.1117/12.903177","url":null,"abstract":"In this work we develop a theoretical model to analyze the response of a two coupled-cavities fiber laser. This setup operates as an additive pulse mode-locking (APM) laser and its design is based on the combined action of an active cavity and a passive cavity. The first one is generated with an erbium-doped fiber and two fiber Bragg gratings (FBGs) as reflective components, while the passive cavity is built with a fiber pigtail being the corresponding mirrors one of the FBGs and the Fresnel reflection at the fiber end. It is proposed a numerical model that solves the Non-Linear Schr¨odinger Equation (NLSE) by using the Split-Step Method (SSM) together with the T-Matrix Method (TMM) to calculate the coupling factor on each reflective component. The main parameters are: the group velocity dispersion (GVD), the self-phase modulation (SPM), the gain and/or loss factors of the fibers including self-saturation effect and the reflectivity and dispersion characteristics of each FBG. The dependence of both, temporal and frequency behaviour of the generated emission with the several involved setup parameters are analyzed. The numerical results produced by applying the theoretical model are compared with previously obtained experimental results, and a good agreement between them is observed.","PeriodicalId":320610,"journal":{"name":"The International Commission for Optics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116032889","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

Calculation of higher order dispersion coefficients in photonic crystal fibers 光子晶体光纤中高阶色散系数的计算

The International Commission for Optics Pub Date : 2011-10-25 DOI: 10.1117/12.901625

A. Martínez-Ríos, B. Ilan, I. Torres-Gómez, D. Monzón-Hernández, D. Ceballos-Herrera

引用次数: 4

Quantum security in homodyne reception using weak coherent states 弱相干态同差接收中的量子安全

The International Commission for Optics Pub Date : 2011-10-25 DOI: 10.1117/12.902191

E. García, J. A. López, F. Mendieta, A. Arvizu

{"title":"Quantum security in homodyne reception using weak coherent states","authors":"E. García, J. A. López, F. Mendieta, A. Arvizu","doi":"10.1117/12.902191","DOIUrl":"https://doi.org/10.1117/12.902191","url":null,"abstract":"We present an experimental 8-port Balanced Homodyne Detector at 1550 nm wavelength, operating in free space, implemented with polarization devices to produce a circularly polarized local oscillator, splitting its In-Phase and Quadrature components to beat separately with the weak coherent incoming signal. This allows the simultaneous measurements of the 2 quadratures at the price of an additional noise due to the vacuum fields that leak via the unused ports, resulting in a modified Husimi function for joint probability distribution for the quadrature components. These schemes require the proper optical phase synchronization between the local oscillator and the incoming field, which constitutes a challenge for weak coherent state reception. To achieve this we designed and implemented an optical Costas loop; the feedback loop (especially the loop filter) which is a result of the optimal design has an impact on the mutual information between transmitter and receiver, being this parameter a condition to generate the cryptographic key. We present experimental and theoretical results on the performance of the mutual information between the transmitter and the receiver due the phase error for different photon numbers.","PeriodicalId":320610,"journal":{"name":"The International Commission for Optics","volume":"25 11","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113940806","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

Off-axis parabolic optical relays: almost perfect imaging 离轴抛物面光学继电器:几乎完美的成像

The International Commission for Optics Pub Date : 2011-10-25 DOI: 10.1117/12.903430

J. Holdsworth, G. Sharafutdinova, M. Sanderson, D. V. van Helden

引用次数: 3

The effect of alignment errors in polarimetry of light using liquid-crystal variable retarders 液晶可变缓速器光偏振测量中对准误差的影响

The International Commission for Optics Pub Date : 2011-10-25 DOI: 10.1117/12.901214

J. M. López-Téllez, Neil C. Bruce

引用次数: 2

Waveguides by multiple implantations of Ag ion on SiO2 substrates 在SiO2衬底上多次注入银离子的波导

The International Commission for Optics Pub Date : 2011-10-25 DOI: 10.1117/12.901975

H. Marquez, D. Salazar, R. Rangel-Rojo, J. L. Ángel, G. Vázquez, E. Flores-Romero, L. Rodríguez-Fernández, A. Oliver

引用次数: 3

Optical characterization of LiBr-H2O using MMI in optical fiber 利用MMI在光纤中表征LiBr-H2O的光学特性

The International Commission for Optics Pub Date : 2011-10-25 DOI: 10.1117/12.902203

E. Antúnez-Cerón, M. Basurto-Pensado, J. C. García-Castrejón, J. Sánchez-Mondragón

{"title":"Optical characterization of LiBr-H2O using MMI in optical fiber","authors":"E. Antúnez-Cerón, M. Basurto-Pensado, J. C. García-Castrejón, J. Sánchez-Mondragón","doi":"10.1117/12.902203","DOIUrl":"https://doi.org/10.1117/12.902203","url":null,"abstract":"Heat pumps work with a refrigerant mixture of lithium bromide-water (LiBr-H2O) and the efficiency of the heat pump may be adjusted depending on the concentration of this mixture. On the basis of the last, in this work an analysis of LiBr concentration by multimode interference (MMI) effects occurring in a single-mode-multimode-single-mode (SMS) fiber structure is presented. In the SMS structure the sensitive element consists in a multimode fiber (MMF) section spliced between two single-mode fibers (SMF) in order to launch light into and recover light from that multimode waveguide. The multimode fiber (MMF) has no cladding so that its exposed core interacts with different concentrations of LiBr-H2O which refraction indices are between 1.423 and 1.472. The different refraction indices of the solution covering the exposed core generate variations in the modes coupling inside the multimode section of the SMS fiber, and therefore, a different response for each case. SMS fiber structure was designed to generate a first self-image of the input profile at a 1555 nm wavelength. The experimental set up consists of a laser diode operating at 1550 nm as the source of the system, a photodetector as the transducer of the transmitted intensity and a digital multimeter.","PeriodicalId":320610,"journal":{"name":"The International Commission for Optics","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131111936","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

An analytical analysis of the nonlinear modes of the coupled silicon-on-insulator waveguides 耦合绝缘体上硅波导非线性模式的解析分析

The International Commission for Optics Pub Date : 2011-10-25 DOI: 10.1117/12.903154

N. Lozano-Crisóstomo, J. Sánchez-Mondragón, A. Vázquez-Guardado, G. Lopez-Galmiche, M. A. Fuentes-Fuentes, O. Magaña-Loaiza, J. Escobedo-Alatorre

{"title":"An analytical analysis of the nonlinear modes of the coupled silicon-on-insulator waveguides","authors":"N. Lozano-Crisóstomo, J. Sánchez-Mondragón, A. Vázquez-Guardado, G. Lopez-Galmiche, M. A. Fuentes-Fuentes, O. Magaña-Loaiza, J. Escobedo-Alatorre","doi":"10.1117/12.903154","DOIUrl":"https://doi.org/10.1117/12.903154","url":null,"abstract":"In the present work we analyze the nonlinear modes of silicon-on-insulator (SOI) nanowires and supermodes of the coupled SOI waveguides. A generalized analysis of the nonlinear modes of silicon nanowires is given where we have considered the scalar approximation and its vectorial nature to obtain the analytical profiles. In the scalar approximation, the analytical analysis of the profiles of the transversal modes is based on the solutions of the Helmholtz equation for nonlinear periodic media, where we obtain an integral solution for the intensity which is identified with the help of the elliptic functions. Those modes are characterized by two constants of motion of particular physical significance and in some approximations the solution could become a soliton or cosenoidal type. Therefore, we describe the solutions on terms of the movement and integration constants. This is an important result because defines the nature of the solutions, therein the analysis of the third order polynomials roots of those elliptic functions. The general theoretical model includes the two-photon absorption (TPA) and the nonlinear Kerr effect implicit in the refraction index.","PeriodicalId":320610,"journal":{"name":"The International Commission for Optics","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134511950","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