Fiber-Optic Cavity Ring Down Using an Added-Signal for Curvature Sensing
Fiber-Optic Cavity Ring Down Using an Added-Signal for Curvature Sensing
dc.contributor.author | Susana Oliveira Silva | en |
dc.contributor.author | Biswas,P | en |
dc.contributor.author | Bandyopadhyay,S | en |
dc.contributor.author | Pedro Jorge | en |
dc.contributor.author | Manuel Joaquim Marques | en |
dc.contributor.author | Orlando Frazão | en |
dc.date.accessioned | 2018-01-17T09:32:47Z | |
dc.date.available | 2018-01-17T09:32:47Z | |
dc.date.issued | 2015 | en |
dc.description.abstract | This letter presents a fiber-optic cavity ring down (CRD) configuration using an added-signal for curvature sensing. An optical time-domain reflectometer was used to send impulses down into the fiber loop cavity, inside of which a long period grating was placed to act as a sensing device. The added-signal was obtained by the sum of several conventional CRD impulses, thus providing an improvement on the curvature sensitivity when compared with the conventional CRD signal processing. A linear response to applied curvature in the range of 2.2-3.6 m(-1) was observed, and a sensitivity of 15.3 mu s/m(-1) was obtained. This result was found to be 20-fold the one obtained for the conventional CRD signal processing. The added-signal increases the optical power but increases as well the ring-down time due to the sum of the several loops that light travels inside the ring. A ring-down time response of 43.3 mu s was attained (versus 23.7 mu s for the conventional CRD signal processing). | en |
dc.identifier.uri | http://repositorio.inesctec.pt/handle/123456789/6550 | |
dc.identifier.uri | http://dx.doi.org/10.1109/lpt.2015.2453124 | en |
dc.language | eng | en |
dc.relation | 4061 | en |
dc.relation | 3565 | en |
dc.relation | 4383 | en |
dc.relation | 4678 | en |
dc.rights | info:eu-repo/semantics/openAccess | en |
dc.title | Fiber-Optic Cavity Ring Down Using an Added-Signal for Curvature Sensing | en |
dc.type | article | en |
dc.type | Publication | en |
Files
Original bundle
1 - 1 of 1