CHIRPED FIBER BRAGG GRATING CAVITY RING-DOWN FOR STRAIN SENSING USING AN OTDR
CHIRPED FIBER BRAGG GRATING CAVITY RING-DOWN FOR STRAIN SENSING USING AN OTDR
dc.contributor.author | Susana Oliveira Silva | en |
dc.contributor.author | Passos,DJ | en |
dc.contributor.author | Manuel Joaquim Marques | en |
dc.contributor.author | Orlando Frazão | en |
dc.date.accessioned | 2018-01-17T09:32:50Z | |
dc.date.available | 2018-01-17T09:32:50Z | |
dc.date.issued | 2015 | en |
dc.description.abstract | This work presents a fiber cavity ring down (CRD) configuration for the measurement of strain. An optical time-domain reflectometer (OTDR) was used to send impulses down into the fiber loop cavity, inside of which a chirped fiber Bragg grating was placed to act as a strain sensing element. This technique could provide strain results with both conventional CRD-based configuration and the OTDR. The CRD configuration provided a linear response to strain applied in the range 0-2000 epsilon, and a sensitivity of 1.34 ns/epsilon was obtained. For the same operation range, the OTDR interrogation allowed obtaining a periodic behavior due to fiber Bragg grating scanning of the wavelength peaks of the multimode laser source while increasing strain. It is shown that the OTDR interrogation method provide a ring-down time response of about 8 s which is a great improvement when compared to the conventional CRD configuration (23 s). (c) 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 57:1442-1444, 2015 | en |
dc.identifier.uri | http://repositorio.inesctec.pt/handle/123456789/6551 | |
dc.identifier.uri | http://dx.doi.org/10.1002/mop.29114 | en |
dc.language | eng | en |
dc.relation | 4678 | en |
dc.relation | 4383 | en |
dc.relation | 4061 | en |
dc.rights | info:eu-repo/semantics/openAccess | en |
dc.title | CHIRPED FIBER BRAGG GRATING CAVITY RING-DOWN FOR STRAIN SENSING USING AN OTDR | en |
dc.type | article | en |
dc.type | Publication | en |
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