A comparison of Au and Ag metalized layer in microstructured optical fibers for surface plasmon resonance excitation

Plasmons on the surface of large metalized holes containing analyte are excited by the fundamental mode of a microstructured fiber. Phase matching between Plasmon and core modes is facilitated by the perforation of fiber core. A comparison of Au and Ag metalized layer is illustrated. There are some differences between gold and silver layer in SPR excitation ability and strength.