Fiber optic sensing apparatus and system
AssigneeJinan University
InventorsKaiwei Li, Tuan Guo
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Abstract
A fiber-optic sensing apparatus is provided, including an outer sleeve, an optical fiber sensor arranged within the outer sleeve, and a filling medium. The optical fiber sensor is capable of detecting a change of a refractive index or a change of surface plasmon waves over an outer surface of the outer sleeve. The filling medium may have a matching refractive index with the outer sleeve and with the optical fiber sensor. The outer sleeve may be exposed directly to the outside medium, or may be coated with at least one functional film layer such as a surface plasmon resonance (SPR)-active base film layer, or a reactive film layer that is reactive to a target molecule in the outside medium.
Claims19
A fiber optic sensing apparatus, comprising:
- an outer sleeve, having a composition of a transparent polymer or a transparent glass;
- an optical fiber sensor, arranged in an inner space of the outer sleeve;
- and
- a filling medium, arranged to fill a gap between the optical fiber sensor and the outer sleeve;
- wherein:
- a refractive index of the filling medium and a refractive index of the outer sleeve are configured to be matching;
- the outer sleeve and the filling medium are configured such that the optical fiber sensor is capable of detecting a change of a refractive index or a change of surface plasmon waves over an outer surface of the outer sleeve;
- and
- the optical fiber sensor is configured to linearly move along an axial direction of the optical fiber sensor within the inner space of the outer sleeve so as to realize a detection of different sensing areas in a scanned manner.
Dependencies are inferred from the claim text.