Optical Couplers
Mostrando 1-8 de 8 artigos, teses e dissertações.
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1. Artificial Immune Network Design of Optical Multiplexers/Demultiplexers
Abstract An efficient design approach of directional couplers based multiplexers/demultiplexers for optical communication applications, by using an adapted artificial immune network algorithm for optimization (opt-AiNet), is presented and validated by using the beam propagation method. Two key multiplexers/demultiplexers based on planar waveguides and optica
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2015-12
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2. Acopladores de cristais fotÃnicos e acesso mÃltiplo por divisÃo de cÃdigo Ãptico (OCDMA) com pulsos ultracurtos em fibras de Bragg / Photonic crystals couplers and optical code division multiple access (OCDMA) with optical ultra-short pulses in linear fiber Bragg gratings
This paper presents numerical simulation studies of propagation/switching of ultra-short pulses in photonic crystal couplers and Optical Code Division Multiple Access (OCDMA) using Fiber Bragg Grating (FBG). For coding were obtained analytically Gold codes. In the analysis of photonic crystal couplers (microstructured) investigated the properties of the prop
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/02/2012
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3. Ressoadores e guias dielÃtricos cilÃndricos operando em micro-ondas e Ãptica: antenas dielÃtricas e acopladores refletores de Bragg a fibra / Cylindrical dielectric resonators and waveguides operating at microwave and optics: dielectric antennas and fiber Bragg grating couplers
Duas contribuiÃÃes caracteristicamente distintas, nÃo obstante correlacionÃveis num mesmo sistema de telecomunicaÃÃo, sÃo apresentadas. A primeira versa sobre antenas ressoadoras constituÃdas por novas cerÃmicas dielÃtricas à base de Fe2O3. Os materiais desenvolvidos foram caracterizados na faixa de micro-ondas. Tratam-se de dielÃtricos com baixa
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/11/2010
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4. Acopladores direcionais de fibras Ãpticas com perfis de dispersÃo / Directional optic staple dispersion profile fiber(DPF)
We present a numerical investigation of the propagation and the switching of fundamental solitons in a two-core nonlinear fiber coupler constructed with Dispersion Profile Fiber (DPF). We have shown that appropriate shaping of the DPF profile is quite effective to recover, almost completely, the original switching behavior associated to the lossless situatio
Publicado em: 2007
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5. Amplificadores Ãpticos, estudos de polarizaÃÃo e geraÃÃo de pulso usando processos paramÃtricos em fibras Ãpticas
The recent telecommunication development can be, to a large extent, attributed to the capacity of transmitting information (video, sound and data) at high transmission rates (Tbits/s) through the optical fiber. The constant advances in the technological development of active and passive devices based on optical fibers have enabled a steady increase in commun
Publicado em: 2007
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6. Estudo numÃrico de acopladores asimÃtricos aplicados na implementaÃÃo de portas lÃgicas totalmente Ãpticas / Numerical study of asymmetric couplers applied in the implementation of logical gates totally optical
Nesta pesquisa, apresentamos uma investigaÃÃo numÃrica da transmissÃo e do chaveamento de sÃlitons fundamentais em acopladores duplos nÃo-lineares, constituÃdos por fibras Ãpticas com Ãndice de dispersÃo decrescente (DDF). SÃo propostas portas lÃgicas Ãpticas baseadas na utilizaÃÃo de um acoplador direcional nÃo linear (NLDC) duplo assimÃtri
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 09/12/2006
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7. Estudo do desempenho de acoplador direcional não linear duplo assimétrico de fibras ópticas operando portas lógicas. / Study of the performance of assymmetrical two-core non linear directional fiber coupler operating logic gates
We investigate the performance of three different non linear directional assymmetrical fibers couplers that include a profile of self-modulation of increasing and decreasing phase. The asymmetry is associated with the profile of self-modulation of phase of one of the chanels. Initially, we investigate the performance of the considered coupler using ultrashor
Publicado em: 2006
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8. Implementação de modelos de amplificadores a fibra dopada em érbio para simulação de enlaces opticos
In this work two models were developed for the optical amplifier: the first is based on its gain curve and in the resolution of the model through the maximum value of gain; the second is based on the interactive resolution of the rate equations that describe the device, being used the values of the emission and absorption cross sections and the method of Run
Publicado em: 1990