Refractive index sensing using a multimode interference-based fiber sensor in a cavity ring-down system
Refractive index sensing using a multimode interference-based fiber sensor in a cavity ring-down system
dc.contributor.author | Susana Oliveira Silva | en |
dc.contributor.author | Orlando Frazão | en |
dc.date.accessioned | 2018-01-23T12:24:23Z | |
dc.date.available | 2018-01-23T12:24:23Z | |
dc.date.issued | 2017 | en |
dc.description.abstract | This work presents a multimode interference-based fiber sensor in a cavity ring-down system for sensing temperature-induced refractive index (RI) changes of water. The sensing head is based in multimodal interference (MMI) and it was placed inside the fiber loop cavity of the CRD system. A modulated laser source was used to send pulses down into the fiber loop cavity and an erbium-doped fiber amplifier (EDFA) was placed in the fiber ring to provide an observable signal with a reasonable decay time. The behavior of the sensing head to temperature was studied due to its intrinsic sensitivity to said parameter - a sensitivity of -1.6 10(-9) s/C was attained. This allowed eliminating the temperature component from RI measurement of water and a linear sensitivity of 580 mu s/RIU in the RI range of 1.324-1.331 was obtained. | en |
dc.identifier.uri | http://repositorio.inesctec.pt/handle/123456789/7265 | |
dc.identifier.uri | http://dx.doi.org/10.1117/12.2263437 | en |
dc.language | eng | en |
dc.relation | 4061 | en |
dc.relation | 4678 | en |
dc.rights | info:eu-repo/semantics/openAccess | en |
dc.title | Refractive index sensing using a multimode interference-based fiber sensor in a cavity ring-down system | en |
dc.type | conferenceObject | en |
dc.type | Publication | en |
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