Wavelength Division Multiplexer/ Demultiplexer based on Ag stripe Plasmon waveguide*

摘要

Characteristic of metal stripe plasmon waveguides with its size and work wavelength is studied and theoretical basis of choosing dimension under different work wavelength are given. The directional couplers composed of two Ag stripes are studied at λ = 1.31μm and λ = 1.55μm . Coupling lengths with edge-edge distance D are analyzed. 1310nm/ 1550nmrnwavelength division multiplexer/demultiplexer is presented.