Patent ID: 8149413

Claim:
A surface plasmon resonance sensing device, comprising: a light source unit, for providing a light source; a fiber sensing unit including a trench, a cladding layer, a core layer, a first metallic layer, a second metallic layer and a plurality of dielectric thin film layers, wherein the core layer is surrounded by the cladding layer, and the light source passes through the fiber sensing unit for producing a light signal; an optical sensor, for sensing the light signal and transforming the light signal into a corresponding electric signal; a plurality of fibers being connected with the light source unit, the fiber sensing unit, the optical sensor, respectively; and a computing and displaying unit being connected with the optical sensor, for sensing the electric signal and displaying the result of the computation; wherein the first metallic layer covers the trench, the plurality of dielectric thin film layers forms on the first metallic layer; and the second metallic layer forms on the plurality of dielectric thin film layers.