Patent ID: 6101300
Filing Date: 2000-08-08
Classification: G02B,G02F,H04Q

Abstract:
An electromagnetic field frequency filter comprising:an input waveguide which carries a signal having at least one frequency including at least one desired frequency;an output waveguide; anda resonator-system coupled between said input and output waveguides operable for the adjustable transfer of said at least one desired frequency to said output waveguide and transmission of undesired frequencies through said input waveguide in response to a variation of the internal decaying rate of at least one resonator of said resonator-system, said resonator-system being comprised of resonators, and defining at least two system modes of opposite symmetry, said system modes consisting in part of a linear combination of resonant modes of said resonators, said resonator-system being specifically configured such that at least two of said system modes have substantially the same frequency when said transfer occurs substantially.