(57) Abstract In order outside the visible spectrum to obtain the surface plasmon wave in the origin of total reflection conditions of incident light of specified wave length, with the prism metal layer (52,62) is used. Within metal layer-related wave length, those whose refractive index is as small as possible, it chooses those whose in addition extinction coefficient is as large as possible, it covers at the solid dielectric layer (54,64) which possesses specified optical parameter. Rather than this layer carries out the role of the optical waveguide which forms the guided wave road mode which is connected to the surface plasmon, is excited as a result, by the p polarized light and s polarized light excited light, depending on former SPR the spectrum it is much narrow, you can obtain consecutive new resonance. With one execution example of this invention dielectric layer as a guided wave road, in addition simultaneously in order to be used as the electrode it is possible to design.
展开▼
