Non-Invasive Electro-Magnetic Field Sensor.

reportActive / Technical Report | Accession Number: ADA173683 | Open PDF

Abstract:

The development of a non-invasive electromagnetic field sensor that would not perturb the electric field being measured was investigated. Electro-optic crystals were selected such that a difference in the index of refraction along the optical axes would result in a change in transmission through the optical system when an electric field was applied. Through the choice of appropriate crystals and crystal geometries, various sensitivities bited in electro-optic crystals is sensitive to an electric field in only one direction. A sensor can be developed using multiple crystals mounted orthogonally that can measure both the strength and direction of the electric field. The electronics and signal processing equipment can be located a great distance from the sensor allowing for real time electric field measurements in hostile environments. This phase of research was directed towards selecting suitable electro-optic crystals for the design of such a sensor and towards determining the optimum means of signal detection.

Author(s):
Nelson, Bruce N. ; Menzel, Christoph ; Diguisseppe, Thomas G.
Author Organization(s):
GEO-CENTERS INC NEWTON CENTRE MA
Descriptive Note:
Final rept. May 85-May 86,
Pagination:
0094

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
GC-TR-578-01, AFWAL-TR-86-3051
Contract/Grant Number(s):
F33615-85-C-3417
Task Number(s):
30
Project Number(s):
3005
Monitor Series:
TR-86-3051
 Subject Terms
Joint Capability Areas:
JCA_1.2.7_Experimentation; JCA_5_Command and Control; JCA_5.3_Planning; JCA_1.2.5_Lessons Learned
Communities of Interest:
Sensors
Descriptor(s):
*FIBER OPTICS, *ELECTROOPTICS, *SINGLE CRYSTALS, *ELECTRIC FIELDS, SIGNAL PROCESSING, MEASUREMENT, MAGNETIC FIELDS, ARRAYS, OXIDES, INSTRUMENTATION, BIREFRINGENCE, ORTHOGONALITY, INTRUSION, PHOSPHATES, POTASSIUM COMPOUNDS, HYDROGEN COMPOUNDS, BISMUTH COMPOUNDS
Field(s)/Group(s):
Test Facilities, Equipment and Methods, Crystallography, Electricity and Magnetism, Fiber Optics and Integrated Optics
Keyword(s):
Field sensors, Bismuth Germanates, Invasive senors, Nonintrusive detectors, Noninvasive sensors, PE65502F, WUAFWAL30053038
Report Date:
1986 Jan 01