Metrology In Optical Fibers
Mostrando 1-4 de 4 artigos, teses e dissertações.
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1. Sistemas CDMA ópticos coerentes baseados em codificação de fase espectral / Coherent optical CDMA systems based on spectral phase coding
In this work we perform a comprehensive analysis of a spectral phase-encoded time spreading optical code division multiple access (SPECTS-OCDMA) system. Despite being a numerical study, efforts were concentrated on the investigation of more realistic scenarios using as much information as possible from implemented test-beds in laboratories. In this context,
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 11/12/2012
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2. CaracterizaÃÃo de lasers de femtossegundos para metrologia Ãptica
O desenvolvimento de lasers de estado sÃlido de modos travados no final da dÃcada de 90 possibilitou um grande avanÃo em diversas Ãreas da Ãptica ultrarrÃpida. A curta duraÃÃo temporal e alta intensidade de pico dos pulsos gerados por estes lasers levou à observaÃÃo de fenÃmenos fÃsicos que atà entÃo nÃo eram possÃveis de serem estudados com
Publicado em: 2009
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3. AVALIAÇÃO METROLÓGICA DE ACELERÔMETRO ÓPTICO UTILIZANDO REDE DE BRAGG: APLICAÇÃO EM LINHAS DE TRANSMISSÃO DE ENERGIA ELÉTRICA / METROLOGICAL EVALUATION OF AN OPTICAL FIBER BRAGG GRATING ACCELEROMETER: APPLICATION IN OVERHEAD TRANSMISSION LINES
Overhead transmission lines play an important role on electric systems. Due to the high energy carried through those networks, failures on overhead lines can bring severe constraints on consumers supply, occasionally taking the form of blackouts in large geographic regions. Among the reasons of such failures is the breaking of electric cables caused by the f
Publicado em: 2005
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4. UM POLARÍMETRO DE BAIXO CUSTO / A POLARIMETER OF LOW COST
A new polarimeter model, based on time-varying birefringence caused by piezoelectric-controlled fiber- squeezing plates, is presented and constructed. The device is based on time division of the light signal and, in comparison with other polarimeters of its kind, features many advantages, like low cost and simplicity. The results given by the new polarimeter
Publicado em: 2003