THE DEVELOPMENT OF A NON-INTRUSIVE ELECTRIC FIELD SENSOR BASED ON THE ELECTRO-OPTIC EFFECT IS PROPOSED.

Award Information
Agency:
Department of Defense
Branch
Air Force
Amount:
$49,979.00
Award Year:
1985
Program:
SBIR
Phase:
Phase I
Contract:
n/a
Agency Tracking Number:
2108
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
Geo-centers Inc
320 Needham St, Newton Upp Falls, MA, 02164
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
BRUCE N NELSON
(617) 964-7070
Business Contact:
() -
Research Institution:
n/a
Abstract
THE DEVELOPMENT OF A NON-INTRUSIVE ELECTRIC FIELD SENSOR BASED ON THE ELECTRO-OPTIC EFFECT IS PROPOSED. ELECTRO-OPTIC CRYSTALS ARE SELECTED SUCH THAT A DIFFERENCE IN THE INDEX OF REFRACTION ALONG THE PRINCIPAL OPTICAL AXES, INDUCED BY A CHANGING ELECTRIC FIELD, RESULTS IN A CHANGE IN TRANSMISSION THROUGH THE OPTICAL SYSTEM. THROUGH THE CHOICE OF AN APPROPRIATE CRYSTAL AND CRYSTAL GEOMETRIES, VARIOUS SENSITIVITIES AND AC BANDWIDTHS ARE ATTAINED IN A FIBER OPTIC SENSOR. THE NATURE OF THE ELECTRO-OPTIC EFFECT EXHIBITED IN ELECTRO-OPTIC CRYSTALS SELECTS SENSITIVITIES TO THE ELECTRIC FIELD ONLY IN ONE DIRECTION. THEREFORE, A SENSOR CAN BE DEVELOPED WITH 3 ELECTRO-OPTIC CRYSTALS MOUNTED ORTHOGONALLY SUCH THAT BOTH FIELD STRENGTH AND DIRECTION CAN BE DETERMINED. ALSO, THE ELECTRONICS AND SIGNAL PROCESSING EQUIPMENT ARE LOCATED AT A GREAT DISTANCE FROM THE SENSOR END, ALLOWING FOR REAL TIME ELECTRIC FIELD MEASUREMENTS IN HOSTILE ENVIRONMENTS. PHASE I RESEARCH IS DIRECTED AT THE SELECTION OF SUITABLE ELECTRO-OPTIC CRYSTALS FOR DESIGNING FIBER OPTIC SENSORS AND TOWARDS THE DETERMINATION OF OPTIMUM MEANS OF SIGNAL DETECTION.

* information listed above is at the time of submission.

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