This invention can be used in nanophotonics, ultrafast optics, optical memories, and quantum computing
Conventional methods of guiding light are limited because they have a fairly small frequency bandwidth and high propagation losses. There is a need for a more efficient waveguide that can be used over a wide range of frequency regimes.
This invention presents a new class of surface plasmon waveguides. The basis of these structures is the presence of surface plasmon modes, supported on the interfaces between the dielectric regions and the flat unpatterned surface of a bulk metallic substrate. The SP waveguides can simultaneously shrink length, time and energy scales, allowing for easy coupling over their entire bandwidth of operation. This attribute enables the design of nanoscale SP-enabled optical micro-cavities.
It can be used for many frequency regimes (from GHz and lower, to optical)
It can operate with minimal absorption losses, limited only by the intrinsic loss of the metallic substrate