FIBER OPTIC CURRENT PROBE

Award Information
Agency: Department of Energy
Branch: N/A
Contract: N/A
Agency Tracking Number: 351
Amount: $324,411.00
Phase: Phase II
Program: SBIR
Awards Year: 1984
Solitcitation Year: N/A
Solitcitation Topic Code: N/A
Solitcitation Number: N/A
Small Business Information
Optra Inc.
1727 Revere Beach Parkway, Everett, MA, 02149
Duns: N/A
Hubzone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Geert Wyntjes
 () -
Business Contact
Phone: () -
Research Institution
N/A
Abstract
SPEED, ACCURACY AND SAFETY ARE OFFERED BY A NON-CONTACT, ALL DIELECTRIC CURRENT MEASUREMENT TECHNIQUE UTILIZING POLARIZED LIGHT AND FIBER OPTIC CABLES MADE FROM MATERIALS WHICH EXHIBIT THE FARADAY EFFECT. THE FARADAY EFFECT MANIFESTS ITSELF BY THE ROTATION OF THE PLANE OF VIBRATION OF PLANE POLARIZED LIGHT THAT PASSES THROUGH THE MATERIAL IN A DIRECTION PARALLEL TO AN APPLIED MAGNETIC FIELD. THE AMOUNT OF ROTATION OF THE PLANE OF VIBRATION IS RELATED TO THE STRENGTH OF THE MAGNETIC FIELD WHICH IN TURN CAN BE RELATED TO THE CURRENT IN A CONDUCTOR. THUS ONE MEASURES THE ROTATION ON THE PLANE OF VIBRATION WHICH YIELDS DIRECTLY THE MAGNETIC FIELD STRENGTH AND INDIRECTLY THE CURRENT. THREE ELEMENTS COMPRISE THE MEASUREMENT SYSTEM: A TWO FREQUENCY LASER, A FIBER OPTIC LOOP(S), AND A DETECTORAND PROCESSOR MODULE. IN COMBINATION THESE ELEMENTS PROVIDEFOR GENERATION OF TWO ORTHOGONALLY POLARIZED SOURCES OF LIGHT, THE TRANSDUCING FIBER OPTIC LOOP, AND A DETECTOR/ ELECTRONICS MODULE WHICH DETERMINES THE RELATIVE PHASE BETWEEN THE TWO ORTHOGONAL BEAMS. THE SYSTEM OFFERS SPEED, ACCURACY WITH HIGH PRECISION AND A WIDE DYNAMIC RANGE TO THEPROBLEM OF CURRENT MEASUREMENT.

* information listed above is at the time of submission.

Agency Micro-sites

US Flag An Official Website of the United States Government