Optical waveguides – With optical coupler – Particular coupling function
Patent
1995-06-20
1997-02-04
Lee, John D.
Optical waveguides
With optical coupler
Particular coupling function
333208, 385 37, 385125, G02B 626
Patent
active
056007400
ABSTRACT:
The present invention is a passband-type waveguide filter in which a periodic distortion is employed which has a sinusoidal, or alternately configured, distortion, which changes phase at a point along the periodic distortion. The passband filter comprises essentially any waveguide, designed as a waveguide, with a periodic distortion added to at least one of the sides of the waveguide. The waveguide can be a rectangular cross section metallic microwave type, cylindrical, elliptical, or microstrip. The waveguide may be optical, a SAW type waveguide or any waveguide of the prior art. In a preferred embodiment a waveguide structure supports propagation of a wave along the waveguide, the waveguide structure containing a boundary and the waveguide structure containing a filter portion having a portion of said boundary with a sinusoidal distortion following:
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Lee John D.
Parker Sheldon H.
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