Abstract
The invention relates to an optical fibre localization plasma resonance sensing device and a system thereof. The optical fibre localization plasma resonance sensing system comprises a light source, an optical fibre localization plasma resonance sensing device and a detection unit; the light source provides a light beam incoming to the optical fibre localization plasma resonance sensing device; and the detection unit receives the emergent light of the optical fibre localization plasma resonance sensing device to generate a detection signal. The optical fibre localization plasma resonance sensing device comprises an optical fibre, a precious metal nano particle layer and a thin filter layer, wherein the thin filter layer is a porous material; the aperture or property of the porous material is selected according to the characteristics of the matter to be detected and, at the same time, an interfere source is isolated.