Appeal No. 2006-1095 Page 2
Application No. 10/280,188
The disclosed invention pertains to a multiple-mode planar-waveguide
sensor, fabrication materials and techniques.
Representative claim 1 is reproduced as follows:
1. A planar optical sensor, comprising:
• at least one input waveguide and at least two output waveguides in
optical communication with a coupling region having a sensor surface
configured to receive a multiplicity of immobilized chemical or
biological receptors thereon;
• a source of light directed to the input waveguide;
• the coupling region supporting at least two electromagnetic modes of
propagation such that chemical or biological binding to the receptors
causes a change in the refractive index near the surface of the
waveguide of the coupled region affecting the interaction of the
propagation modes; and
• a detector for detecting differing aspects of the light propagating down
each of the output waveguides.
The examiner relies on the following references:
Boiarski et al. (Boiarski) 5,173,747 Dec. 22, 1992
Fardad et al. (Fardad) 6,054,253 Apr. 25, 2000
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