Development of Opto-electronic Biosensor based on Surface Plasmon Resonance Phenomenon using an Optical Relay Setup

Development of an opto-electronic biosensor based on surface plasmon resonance phenomenon is proposed by using an optical relay setup. The relay setup constructed using a 4-f optical architecture provides small divergent beam illumination inside a prism and resonates surface plasmons along an interface of dielectric and metal layers. Since size of a reflectivity output signal pattern is small, a compact sensor can be implemented by using a commercially-available small CMOS array image sensor.