Patent ID: 6735235
Filing Date: 2004-05-11
Classification: B82Y,G02B

Abstract:
A three-dimensional photonic crystal add-drop filter apparatus, comprising:a three-dimensional photonic crystal; a first waveguide in said three-dimensional photonic crystal for transmitting light having a frequency within a bandgap of said three-dimensional photonic crystal, said first waveguide having an input to and a first output from said three-dimensional photonic crystal; a second waveguide in said three-dimensional photonic crystal, said second waveguide having a second output from said three-dimensional photonic crystal; and a resonant cavity coupling said first waveguide to said second waveguide for extracting at least one wavelength of the light transmitted in said first waveguide and redirecting the extracted at least one wavelength of the light to said second waveguide to exit said three-dimensional photonic crystal at said second output of said second waveguide, a remainder of the light transmitted in said first waveguide continuing to be transmitted in said first waveguide to exit said three-dimensional photonic crystal at said first output of said first waveguide.