Barbara M White

US Patent:

51151278, May 19, 1992

Filed:

Sep 17, 1990

Appl. No.:

7/585331

Inventors:

Lloyd C. Bobb - Warminster PA
Barbara J. White - Hatboro PA
Jon P. Davis - Willow Grove PA
Arthur Samouris - Albuquerque NM

Assignee:

The United States of America as represented by the Secretary of the Navy - Washington DC

International Classification:

H01J 516
G01D 534

US Classification:

25022719

Abstract:

A physical property of a fluid or of any optical fiber is measured using an ptical fiber interferometer. A conductive material is disposed upon the surface of a region of a light tranmitting optical fiber and the region having the conductive material is disposed in the fluid. Light energy is applied to one end of the fiber and transmitted light is received at the other end of the fiber. Electrical energy is applied to the conductive material disposed upon the surface of the fiber to heat the region of the fiber and cause a change in the optical path length of the light transmitted through the fiber. The physical property of the fluid or optical fiber is determined in accordance with the change in the optical path length or phase of the received light caused by applying the electrical energy to the conductive material. Thermal conductivity is measured using a series of short energy pulses and determining the average phase change. The flow rate of a fluid is measured by measuring the phase change and applied electrical energy upon heating the fiber to an equilibrium temperature.

US Patent:

48590592, Aug 22, 1989

Filed:

Jan 13, 1988

Appl. No.:

7/145020

Inventors:

Lloyd C. Bobb - Warminster PA
Barbara J. White - Hatboro PA
Jon P. Davis - Willow Grove PA

Assignee:

The United States of America as represented by the Secretary of the Navy - Washington DC

International Classification:

G01D 902

US Classification:

356345

Abstract:

The phase of light passing through an optical waveguide is modulated by aying electric current to heat the waveguide and thereby alter the length and refractive index thereof. An application for the thermal phase modulation concept is provided in a Mach-Zehnder interferometer.

US Patent:

50476262, Sep 10, 1991

Filed:

Jan 3, 1990

Appl. No.:

7/460435

Inventors:

Lloyd C. Bobb - Warminster PA
Barbara J. White - Hatboro PA
Jon P. Davis - Willow Grove PA

Assignee:

The United States of America as represented by the Secretary of the Navy - Washington DC

International Classification:

H01J 516

US Classification:

25022719

Abstract:

A physical property of a liquid or of any optical fiber is measured using optical fiber interferometer. A conductive material is disposed upon the surface of a region of a light transmitting optical fiber and the region having the conductive material is disposed in the liquid. Light energy is applied to one end of the fiber and transmitted light is received at the other end of the fiber. Electrical energy is applied to the conductive material disposed upon the surface of the fiber to heat the region of the fiber and cause a change in the optical path length of the light transmitted through the fiber. The physical property of the liquid or optical fiber is determined in accordance with the change in the optical path length of the received light caused by applying the electrical energy to the conductive material. A series of short energy pulses is provided and the average phase change is determined. The conductive material is gold and it encircles the fiber.

Address:

84 Surrey Hl Way, Rochester, NY 14623

Phone:

5854759685

VIN:

5FNYF18588B038452

Make:

HONDA

Model:

PILOT

Year:

2008