Patent ID: 9285534
Filing Date: 2016-03-15
CPC Classification: G01N,G02B

Claim Text:
1. A fiber-optic surface plasmon resonance sensor comprising: an optical fiber comprising a core, a cladding surrounding the core, and a depression; and a surface plasmon excitation layer provided on the depression, wherein the surface plasmon excitation layer comprises a first excitation layer, a second excitation layer and an optical waveguide layer between the first excitation layer and the second excitation layer, the optical waveguide layer being a single layer, and wherein the surface plasmon excitation layer is configured such that incident light propagating through the core and satisfying a surface plasmon resonance condition is coupled into the optical waveguide layer in optical waveguide mode and such that a surface plasmon wave is excited in the surface plasmon excitation layer by the incident light coupled into the optical waveguide layer.