In-line light sensor

Details In-line light sensor In-line light sensor

2008-04-04

2010-11-02

Kianni, K. Cyrus (Department: 2883)

Optical waveguides

With optical coupler

Particular coupling structure

C385S014000

Reexamination Certificate

active

07826700

ABSTRACT:
The sensor includes an optical waveguide defined in a light-transmitting medium. The waveguide includes a sensing portion and an non-sensing portion. The light-transmitting medium included in the sensing portion has defects that provide the light-transmitting medium with a deep band gap level between a valence band of the light-transmitting medium and a conduction band of the light-transmitting medium. The deep band gap level is configured such that the waveguide guiding light signals through the light-transmitting medium in the sensing portion causes free carriers to be generated in the light-transmitting medium. A detector is configured to detect the free carriers in the sensing region of the waveguide.

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