Zobrazeno 1 - 10
of 38
pro vyhledávání: '"Carlos E. S. Castellani"'
Publikováno v:
Journal of Microwaves, Optoelectronics and Electromagnetic Applications, Vol 23, Iss 1 (2024)
Abstract This paper presents a numerical study and the optimization of very short discrete multi-pump Raman amplifiers using Tellurite-based optical fibers. While most studies about discrete Raman amplifiers usually focus on cases where hundreds of m
Externí odkaz:
https://doaj.org/article/1c41a86c2f0940968805e540371760e8
Publikováno v:
Journal of Microwaves, Optoelectronics and Electromagnetic Applications, Vol 17, Iss 4, Pp 528-538
Abstract Here we report a simple analytical technique to model a Mach-Zehnder fiber optic interferometric sensors that allow us to predict and calculate via computer simulations parameters that are not easily obtained experimentally. This model was c
Externí odkaz:
https://doaj.org/article/1e7ce55376c049968f04871c5987a093
Publikováno v:
IEEE Sensors Journal. 21:7657-7664
This paper presents the development of a thermal measurement system for density, specific heat capacity and thermal conductivity in fluids. Due to toxic and flammable environment often found in oil industry, Fiber Bragg Gratings (FBGs) were used in t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::014cb394c267b1fdad234d932a2a00e1
https://doi.org/10.1109/jsen.2021.3049574
https://doi.org/10.1109/jsen.2021.3049574
Autor:
Luís C. B. Silva, Patrick Marques Ciarelli, Carlos E. S. Castellani, Jean Carlos Cardozo da Silva, Marcelo E. V. Segatto, Maria José Pontes, Igor Brutkowski Vieira da Costa
Publikováno v:
IEEE Sensors Journal. 21:4582-4589
Measuring temperature is essential in many industrial applications not only to preserve equipment lifespan but also for security reasons. One solution that has grown exponentially in recent years due to its distributed measurement capability is the R
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c685072b499b6d78efb5be1dfbf61119
https://doi.org/10.1109/jsen.2020.3029210
https://doi.org/10.1109/jsen.2020.3029210
Autor:
Giuliano S Rebuli, Luís C B Silva, Eduarda Pedruzzi, Arnaldo G Leal-Junior, Marcelo E V Segatto, Carlos E S Castellani
Publikováno v:
SSRN Electronic Journal.
In this paper, through a semi-analytical model, we demonstrate the spectral optimization of Stokes channels for cascaded multi-wavelength Brillouin fiber lasers. Here we develop an improved version of an earlier model, introducing the erbium-doped fi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::883b6e5206b6df2f163afc888b659d0a
https://doi.org/10.2139/ssrn.4055263
https://doi.org/10.2139/ssrn.4055263
Autor:
Marcelo E. V. Segatto, Carlos E. S. Castellani, Jair C. C. Freitas, Maria José Pontes, Yuli A. A. Pizarro, Luís C. B. Silva, Mariana A. Vieira
Publikováno v:
IEEE Photonics Technology Letters. 31:1713-1716
This work demonstrates a passively Q-Switched fiber laser employing graphite oxide as a saturable absorber, generating tunable microsecond pulses with kHz repetition rates, pulse energies of up to 15.54 nJ and the pulse-to-pulse timing jitter of 46.1
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::52895b380d58d5eaba9c86a937d83df2
https://doi.org/10.1109/lpt.2019.2943252
https://doi.org/10.1109/lpt.2019.2943252
Autor:
Arnaldo G. Leal-Junior, Renan C. Lazaro, Carlos Marques, Anselmo Frizera-Neto, Carlos E. S. Castellani
Publikováno v:
Sensors, Vol 21, Iss 6922, p 6922 (2021)
Sensors
Volume 21
Issue 20
Sensors (Basel, Switzerland)
Sensors
Volume 21
Issue 20
Sensors (Basel, Switzerland)
The assessment of heat transfer is a complex task, especially for operations in the oil and gas industry, due to the harsh and flammable workspace. In light of the limitations of conventional sensors in harsh environments, this paper presents a fiber
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3d87a918a8ce8599b3e7c2edc95cf40c
https://doi.org/10.3390/s21206922
https://doi.org/10.3390/s21206922
Publikováno v:
Optical Fiber Technology. 64:102560
Dark pulses are optical structures with fascinating fundamental physics and have a great wealth of optical properties yet to be better explored. Since the earliest demonstration of a dark pulse, its generation was very limited, depending on specific
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d3d02d053b5c248013da10ca996bd3c4
https://doi.org/10.1016/j.yofte.2021.102560
https://doi.org/10.1016/j.yofte.2021.102560
Autor:
Hozianna C. B. Ximenes, Maria José Pontes, Rodolpho L. Silva, Carlos E. S. Castellani, Moisés R. N. Ribeiro, Anselmo Frizera-Neto
Publikováno v:
IEEE Photonics Technology Letters. 29:239-242
We report an optical sensor based on the interference pattern created by an all-fiber Mach–Zehnder setup. This pattern is produced by the combination of the core and cladding modes that are excited on a fiber with reduced diameter fusion spliced to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::54384e264ee8eaba608105b88e09c724
https://doi.org/10.1109/lpt.2016.2637870
https://doi.org/10.1109/lpt.2016.2637870
Publikováno v:
2019 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC).
We report in this work for the first time, to the best of the author’s knowledge, an approach that allows to accurately determine directly from the sensor response the hot spot size in Raman Distributed Temperature Sensors. Our method applies a lin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1630ee7455069b277a75c7461a8078b8
https://doi.org/10.1109/imoc43827.2019.9317584
https://doi.org/10.1109/imoc43827.2019.9317584