The Dow Chemical Company

Nathan N Haese

David R Pedersen

Theodore L Parker

The invention is a pressure sensing device utilizing a polymer optical fiber with a core comprised of a flexible thermoplastic aliphatic segmented polyurethane. The use of an optical fiber based pressure sensor eliminates the electromagnetic interference problems associated with conventional electronic pressure sensors. Use of polyurethane as the core material for the optical fiber results in an optical fiber with high flexibility, thus making the inventive pressure sensing device more rugged and durable than other optical fiber based pressure sensors.

Pressure sensor utilizing a polyurethane optical fiber

The invention is a novel polymer optical waveguide which contains a thermoplastic aliphatic segmented polyurethane core.

Flexible optical waveguide containing a thermoplastic aliphatic

The invention is a durable, zero-based optical coupler pressure/load sensor which is immune from electromagnetic interference.

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Walnut Creek, CA, United States of America

Nathan N Haese