Scanning electromagnetic waves in photonic band gap multilayers

Abstract

A device and associated methods for using surface electromagnetic waves (SEWs) generated at the surface of photonic band gap multilayers (PBGMs) in place of surface plasmons (SPs) in metal films. One device is a photonic circuit comprising a multilayer apparatus to generate surface electromagnetic waves, wherein the surface electromagnetic waves comprise the signal medium within the circuit. The circuit may be formed or etched on the surface of the multilayer apparatus.

What is claimed is: 
     
         1 . An apparatus, comprising:
 a photonic band gap multilayer structure with a first surface, wherein the multilayer structure generates surface electromagnetic waves spatially confined on the first surface; and   a photonic circuit formed in or on the first surface of the multilayer structure.   
     
     
         2 . The apparatus of  claim 1 , wherein the photonic circuit is a photonic integrated circuit. 
     
     
         3 . The apparatus of  claim 1 , wherein the multilayer structure is a dielectric multilayer. 
     
     
         4 . The apparatus of  claim 1 , wherein the photonic circuit is etched into the top surface. 
     
     
         5 . The apparatus of  claim 1 , wherein the photonic circuit comprises a waveguide. 
     
     
         6 . The apparatus of  claim 5 , wherein the photonic circuit comprises a focus to guide surface electromagnetic waves into one end of the waveguide. 
     
     
         7 . The apparatus of  claim 1 , wherein the photonic circuit comprises a conversion grating to convert the surface electromagnetic waves to an optical signal. 
     
     
         8 . The apparatus of  claim 5 , wherein the waveguide comprises a plurality of cylindrical holes. 
     
     
         9 . The apparatus of  claim 5 , wherein the waveguide comprises a grating. 
     
     
         10 . The apparatus of  claim 1 , wherein the surface electromagnetic waves are spatially confined by an periodic indentation array with a missing element. 
     
     
         11 . The apparatus of  claim 1 , wherein the surface electromagnetic waves are spatially confined by a grating structure. 
     
     
         12 . The apparatus of  claim 1 , wherein the surface electromagnetic waves are spatially confined by an annular ring resonator. 
     
     
         13 . A method for operating a photonic circuit, comprising the steps of:
 coupling light from a source to surface electromagnetic waves;   focusing the surface electromagnetic waves into a surface electromagnetic wave waveguide; and   converting the surface electromagnetic waves into light.   
     
     
         14 . The method of  claim 13 , further comprising the step of providing a surface electronic wave waveguide on the surface of a photonic band gap multilayer. 
     
     
         15 . The method of  claim 14 , wherein the waveguide comprises a plurality of cylindrical holes. 
     
     
         16 . The method of  claim 14 , wherein the waveguide comprises a grating.