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engineering, electrical & electronic (6) 6
optical fibers (6) 6
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IEEE Sensors Journal, ISSN 1530-437X, 11/2013, Volume 13, Issue 11, pp. 4113 - 4120
In this paper, we describe a low cost optical sensor of water level based on fiber bending effect associated to the use of an elastomeric membrane. The sensor... 
Optical fibers | Optical fiber sensors | liquid level sensor | Optical fiber cables | dam's monitoring | Optical sensor | bend loss | Electron tubes | Optical fiber testing | Monitoring | INSTRUMENTS & INSTRUMENTATION | PHYSICS, APPLIED | FORMULA | ENGINEERING, ELECTRICAL & ELECTRONIC
Journal Article
Journal of Lightwave Technology, ISSN 0733-8724, 04/2013, Volume 31, Issue 8, pp. 1323 - 1330
In this work, we propose a novel self-seeded WDM-PON topology. Unlike previous works, in our case, the self-seeding occurs in RSOAs located at the OLT,... 
Optical fibers | Optical filters | self-seeding | wavelength division multiplexing | reflective semiconductor optical amplifiers | Bit error rate | Extinction ratio | Optical receivers | Passive optical networks | NETWORK | OPTICS | TELECOMMUNICATIONS | POLARIZATION | ENGINEERING, ELECTRICAL & ELECTRONIC
Journal Article
Optical Fiber Technology, ISSN 1068-5200, 12/2015, Volume 26, pp. 180 - 183
•The access to high voltage by power over fiber and free space optics is proposed.•The collimators kit avoids the use of an embedded fiber optic... 
High voltage | Free space optics | Electrical insulator | Power over fiber | Current sensing | Overhead transmission lines | OPTICS | TELECOMMUNICATIONS | ENGINEERING, ELECTRICAL & ELECTRONIC | Power lines | Usage | Equipment and supplies | Rain and rainfall | Fiber optics
Journal Article
Journal of Microwaves, Optoelectronics and Electromagnetic Applications, ISSN 2179-1074, 06/2012, Volume 11, Issue 1, pp. 15 - 25
This paper presents a new approach to upgrade and extend the reach of the current passive optical network (PON) by using wavelength division multiplexing (WDM)... 
PON Overlay | GPON | GEPON CWDM | PON Stacking
Journal Article
Journal of Microwaves, Optoelectronics and Electromagnetic Applications, ISSN 2179-1074, 06/2012, Volume 11, Issue 1, pp. 15 - 25
This paper presents a new approach to upgrade and extend the reach of the current passive optical network (PON) by using wavelength division multiplexing (WDM)... 
OPTICS | ENGINEERING, ELECTRICAL & ELECTRONIC
Journal Article
Journal of Lightwave Technology, ISSN 0733-8724, 09/2019, Volume 37, Issue 18, pp. 4791 - 4798
In this paper, we proposed a sealing method of fiber Bragg grating (FBG) in pressure sensors using electroless nickel-plating. The sensor is designed to be... 
Optical fibers | Pressure sensors | FBG | Electroless nickel-plating | Engines | Connectors | Bragg gratings | pressure sensor | Optical fiber sensors | thermoelectric | harsh environments | engine | optical fiber | Nickel | DESIGN | OPTICS | TELECOMMUNICATIONS | FIBER BRAGG GRATINGS | ENGINEERING, ELECTRICAL & ELECTRONIC
Journal Article
2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC), 08/2017, pp. 1 - 4
Long range ultrasonic testing approach is strategic due to its capability to inspect long distances and to detect incipient damage in rail transportation. The... 
Rails | Actuators | Ultrasonic variables measurement | guided waves | Acoustics | FBG | cracks | PZT | Optical sensors | Monitoring | rail monitoring
Conference Proceeding
05/2014
SISTEMA E MÉTODO PARA PLANEJAMENTO DE REDES DE TELECOMUNICAÇÕES PARA SERVIÇOS TRIPLE PLAY, que oferecem suporte ao planejamento de rede, através de uma... 
ELECTRIC COMMUNICATION TECHNIQUE | TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION | WIRELESS COMMUNICATIONS NETWORKS | ELECTRICITY
Patent
This study aims to investigate the use of Reed-Solomon codes in the channel coding of the TDMA IS-136 system. Block codes seem to be more suitable to the time... 
Modulação digital | Teoria da codificação | Telefonia celular
Dissertation
2011 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC 2011), 10/2011, pp. 40 - 43
This paper presents a new approach to upgrade the current passive optical network (PON) by using wavelength division multiplexing (WDM) in the standardized... 
Optical fibers | GEPON | Wavelength division multiplexing | GPON | CWDM Stacked PON | Optical receivers | Passive optical networks | Optical fiber filters | PON
Conference Proceeding
12/2015
dispositivo sensor e sistema de fibra óptica de medição de volume de líquido contido num reservatório (190) compreendendo uma fibra óptica (130) mergulhada... 
TESTING | MEASURING | PHYSICS | METERING BY VOLUME | MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUIDLEVEL
Patent
08/2014
DISPOSITIVO SENSOR DE CORRENTE E FIBRA ÓPTICA compreendendo um suporte plano (8) que pode ser envolto/curvado ao redor de um condutor (4) de corrente elétrica,... 
TESTING | OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS | MEASURING ELECTRIC VARIABLES | MEASURING MAGNETIC VARIABLES | MEASURING | PHYSICS | OPTICS
Patent
01/2015
Métodos, sistemas e aparatos para uso em redes de acesso ópticas com sinais autoalimentados e multiplexados em comprimento de onda que provêem meios para gerar... 
MULTIPLEX COMMUNICATION | TRANSMISSION | ELECTRIC COMMUNICATION TECHNIQUE | ELECTRICITY
Patent
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