Raman Amplifier
Mostrando 1-12 de 15 artigos, teses e dissertações.
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1. A simple strategy to design broadband low power consumption distributed Raman amplifier
Abstract In this work, a simple strategy to design wideband low power consumption Raman amplifiers is demonstrated for a three-pump configuration using a low water peak optical fiber. The approach is based on the introduction of a novel numerical measure, which quantifies and isolates pump-pump interaction contribution to gain profile and analyzes its correl
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2017-09
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2. Hybrid distributed Raman/EDFA amplifier with hybrid automatic gain control for reconfigurable WDM optical networks
Nowadays, optical amplifiers designs are induced by new requirements generated by optical networks. The introduction of WDM reconfigurable networks with increasing rate from 10-40 Gb/s to 100 Gb/s and beyond, demand new optical amplifiers development with improved gain spectral flatness and noise figure for all operational range of input powers and set-point
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2013-12
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3. Otimização da largura de banda de ganho de um amplificador Raman na banda "O" baseada em algoritmo genético
Neste trabalho a otimização da largura de banda de ganho de um amplificador Raman discreto na banda "O" utilizando algoritmo genético de um simulador comercial foi realizada. O objetivo principal do trabalho foi otimizar a maior largura de banda de ganho do amplificador Raman obtendo valores de variação de ganho menores que 0.5 dB. Utilizando uma fibra
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/01/2011
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4. Design of distributed optical-fiber raman amplifiers using multi-objective particle swarm optimization
A novel method is presented to design the configuration of pumping lasers of Raman amplifiers using a multi-objective particle swarm optimizer. The goal is to obtain the pump laser wavelengths and powers that maximize the amplifier on-off gain, while maintaining the flatness of the gain over the used bandwidth. We used an algorithm called Multiple Objective
Journal of Microwaves, Optoelectronics and Electromagnetic Applications. Publicado em: 2011-12
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5. Gain profile optimization for Raman+EDFA hybrid amplifiers with recycled pumps for WDM systems
An approximated technique to quickly optimize the gain profile of multi-pump broadband hybrid amplifiers under residual pump recycling in WDM systems is proposed. It is based on the amplifier spectral equalization by adjusting the flexible gain profile of a multi-pump Raman amplification stage to compensate the Erbium-doped stage gain variation within the C-
Journal of Microwaves, Optoelectronics and Electromagnetic Applications. Publicado em: 2010-12
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6. AmplificaÃÃo Raman de pulsos curtos em fibras Ãpticas com ganho periÃdico / Raman amplification of short pulses in optical fibers with periodic gain
Optical Amplifiers amplify incident light through stimulated emission, the same mechanism which is used by lasers. Indeed, an optical amplifier, it is not but a laser without feedback. Its main ingredient is optical gain which is realized when the amplifier is under pumping process (optically or electrically) in order to cause population inversion at electro
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 01/04/2008
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7. 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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8. Caracterização e análise de desempenho dos amplificadores ópticos Raman discretos em sistemas de comunicações ópticas na banda O
The optical amplifier has improved the optical communication systems because they lead to an increase in transmission capacity of medium and long haul optical systems, with technological advantages over electronic regenerators. The optical amplifier are relatively simple to deploy and can be used in optical links without any troubles regarding signal transmi
Publicado em: 2006
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9. Análise de um amplificador Raman distribuído nas bandas S+ e S utilizando a fibra óptica TrueWave Reach Low Water Peak
The performance of a distributed Raman amplifier at S - Band using the TrueWave Reach Low Water Peak fiber in a 100km span is analyzed through numerical simulations. The manufacturer, the OFS Fitel Denmark Ap, has experimentally characterized the physical parameters of the fiber, such as, attenuation, dispersion and Raman gain efficiency at Band - S. The low
Publicado em: 2006
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10. Amplificador Raman discreto para utilização em transmissão CWDM na banda O
A maior parte das pesquisas realizadas sobre amplificadores Raman tem seus estudos centrados nas bandas C (1530 a 1565 nm) e L (1565 a 1625 nm), regiões onde os dados de eficiência de ganho Raman e a parametrização dos amplificadores têm seus estudos consolidados. Um ponto importante para ser considerado quando se deseja trabalhar numa banda diferente,
Publicado em: 2006
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11. Análise de um amplificador Raman distribuído cobrindo as Bandas C e S utilizando a fibra óptica TrueWave Reach Low Water Peak
O desempenho de uma amplificador Raman distribuído na banda C e S utilizando a fibra TrueWave Reach LWP em 100 km de enlace é analisado através de simulações numéricas. Os parâmetros físicos da fibra, como atenuação, dispersão, e eficiência de ganho Raman para bandas C e S foram caracterizados experimentalmente pelo fabricante, a OFS Denmark. Em
Publicado em: 2006
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12. Estudo de amplificadores parametricos para sistemas de comunicações opticas de altas taxas de transmissão / Study of parametric amplifiers for high bit rate optical communication systems
This thesis presents a theoretical and experimental study on fiber optics parametric amplifiers. For the double-pumped case, we show the performance of the amplifier in terms of spectral bandwidth and gain uniformity, both fundamental properties for WDM applications. By using short dispersion shifted fibers and highly non-linear fibers, we made parametric am
Publicado em: 2006