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pro vyhledávání: '"Jose M. Lopez- Higuera"'
Autor:
Jose M. Lopez- Higuera, Adolfo Cobo, Olga M. Conde, Jesus Mirapeix, P. Beatriz Garcia-Allende
Publikováno v:
Sensors, Vol 8, Iss 10, Pp 6496-6506 (2008)
A new spectral processing technique designed for application in the on-line detection and classification of arc-welding defects is presented in this paper. A noninvasive fiber sensor embedded within a TIG torch collects the plasma radiation originate
Externí odkaz:
https://doaj.org/article/b75da81646cc4022ad8a4aecb4d2f5a2
Autor:
Ruben Ruiz-Lombera, Javier Urricelqui, Mikel Sagues, Jesus Mirapeix, Jose M. Lopez-Higuera, Alayn Loayssa
Publikováno v:
IEEE Photonics Journal, Vol 7, Iss 6, Pp 1-9 (2015)
We demonstrate, for the first time to our knowledge, a Brillouin optical time-domain analysis (BOTDA) sensor that is able to operate with a probe power larger than the Brillouin threshold of the deployed sensing fiber and that is free from detrimenta
Externí odkaz:
https://doaj.org/article/22dd28aad5b34094bef67e9d95edf563
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Publikováno v:
Sensors, Vol 9, Iss 10, Pp 7753-7770 (2009)
Plasma optical spectroscopy is widely employed in on-line welding diagnostics. The determination of the plasma electron temperature, which is typically selected as the output monitoring parameter, implies the identification of the atomic emission lin
Externí odkaz:
https://doaj.org/article/6b8740ed15474c22ae2d937cee5ae8d5
Publikováno v:
Sensors, Vol 9, Iss 8, Pp 6261-6272 (2009)
In this work, methane detection is performed on the 2ν3 and ν2 + 2ν3 absorption bands in the Near-Infrared (NIR) wavelength region using an all-fibre optical sensor. Hollowcore photonic bandgap fibres (HC-PBFs) are employed as gas cells due to the
Externí odkaz:
https://doaj.org/article/fc643880e9ae4ab29d7bf5bdc5ee7c5d
Publikováno v:
Sensors, Vol 9, Iss 1, Pp 490-502 (2009)
Hollow-core photonic bandgap fibres (HC-PBFs) have emerged as a novel technology in the field of gas sensing. The long interaction pathlengths achievable with these fibres are especially advantageous for the detection of weakly absorbing gases. In th
Externí odkaz:
https://doaj.org/article/a7b0b8ecd1644818b7b6f793ec17a8ca