System for detecting chemical changes in materials by embedding

Details System for detecting chemical changes in materials by embedding System for detecting chemical changes in materials by embedding

1988-02-24

1989-05-02

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

356133, H01T 516, G01N 2141

Patent

active

048271217

ABSTRACT:
A system for detecting chemical characteristics within a material includes an optical fiber having a relatively short unclad sensor section for embedding in a material, a source of infrared radiation to direct infrared radiation into the fiber, and an optical decoder connected to the fiber to detect the spectrum of infrared radiation absorbed by the material in which the sensor section is embedded.

REFERENCES:
patent: 4608344 (1986-08-01), Carter et al.
patent: 4639594 (1987-01-01), Schoch et al.

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