SURFACE PLASMON RESONANCE SENSOR AND SENSING METHOD USING SURFACE PLASMON RESONANCE

摘要

PURPOSE: A surface plasmon resonance sensor and a sensing method using the surface plasmon resonance are provided to prevent light loss by the optical absorption of a metal layer. CONSTITUTION: A surface plasmon resonance sensor comprises an oval reflective surface(50), a platform(5), a surface plasmon excitation layer(12), and an optical detector(32). The reflecting surface has a first focal point and a second focus. The surface plasmon excitation layer locates on the platform. The surface plasmon excitation layer is touched with an analysis target. The optical detector detects the light reflected to the surface plasmon excitation layer. The second focus is located on the surface plasmon excitation layer.