Optical waveguides – With optical coupler – Particular coupling function
Reexamination Certificate
2006-02-07
2006-02-07
Bovernick, Rodney (Department: 2874)
Optical waveguides
With optical coupler
Particular coupling function
C385S050000
Reexamination Certificate
active
06996310
ABSTRACT:
An electromagnetic field frequency filter which includes a bus waveguide that carries a signal having a plurality of frequencies, including a desired frequency, and a drop waveguide. A resonator-system is coupled to the bus and drop waveguides via directional couplers and transfers the desired frequency from the bus waveguide to the drop waveguide while allowing transmission of the remaining frequencies in the bus waveguide. The input signal in the bus waveguide is coupled from the bus waveguide to the resonator-system by a first directional coupler. The resonator-system includes two sub-elements each comprising at least one resonator. The first directional coupler splits the input signal into two preferably equal parts and directs each part into a resonator sub-element. The desired frequency is transferred to the drop waveguide by a second directional coupler. The non-desired frequencies are returned to the bus waveguide, in the forward direction, by the first directional coupler.
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Villeneuve Pierre
Wang Tairan
Bovernick Rodney
Cambrius Inc.
Gauthier & Connors LLP
Stahl Mike
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