Optical waveguide sensor system

Details Optical waveguide sensor system Optical waveguide sensor system

2007-01-16

2007-01-16

Kim, Ellen E. (Department: 2874)

Optical waveguides

Optical waveguide sensor

C385S014000

Reexamination Certificate

active

10488171

ABSTRACT:
The sensor system for the detection of chemical substances has a spiral optical waveguide which produces an evanescent field penetrating into the adjacent medium, a light source for coupling light into the waveguide, and a detecting circuit for receiving light from the waveguide and producing an output signal reflecting the sensed chemical substance. The waveguide has the form of a bifilar, non-crossing spiral. It consists of an incoming or decreasing spiral segment and an outgoing or increasing spiral segment continuously bound by a central semi-circular segment.

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