Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1988-11-04
1990-05-29
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
324 96, H01J 516
Patent
active
049298305
ABSTRACT:
A fibre-optic sensor for measuring a particular directional component of an electric field comprises a piezoelectric body (4) and a glass fiber (5a) which is rigidly connected to the piezoelectric body (4) in a given length section. A crystal class and a crystallographic orientation of the piezoelectric body (4) is selected in such a manner that only the directional component which is parallel to a given body axis (h) of the piezoelectric body (4) causes a change in a length of the glass fiber (a) by means of an inverse piezoelectric effect. The change in length is measured interferometrically. In a preferred embodiment, the piezoelectric body has the shape of a disk, of a plate or of a hollow cylinder.
REFERENCES:
patent: 4319186 (1982-03-01), Kingsley
patent: 4477723 (1984-10-01), Carome
patent: 4524322 (1985-06-01), Bobb
IEEE Journal of Quantum Electronics, vol. QE-18, No. 4, Apr. 1982.
An Electric Field Sensor Utilizing A Piezoelectric Polyvinylidene Fluoride (PVF2) Film in a Single-Mode . . . pp. 670-675.
IEEE Journal of Quantum Electronics vol. QE-18 No. 10 Oct. 1982.
Fiber-Optic Fabry-Perot Interferometer And Its Sensor Applications Yoshino, et al. pp. 1624-1633.
Electronics Letters Apr. 15th 1982 vol. 18 No. 8 Electric Field Sensitive Optical Fibre Using Piezoelectric Polymer Coating. pp. 327-328.
The Optical Society of America-Optic Letters vol. 12 No. 9 Strain Effects On Highly Elliptical Core Two-Mode Fibers Blake, et al., pp. 732-734, Sep. 1987.
Optical Society of America/Optics Letters Sep. 1987 vol. 12, No. 9.
Use of Highly Elliptical Core Fibers For Two-Mode Fiber Devices Kim, et al., pp. 729-731.
Bohnert Klaus
Kaufmann Meinolph
Nehring Jurgen
Asea Brown Boveri AG
Hsia Sherrie
Nelms David C.
LandOfFree
Fiber-optic electric field sensor with piezoelectric body sensor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Fiber-optic electric field sensor with piezoelectric body sensor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fiber-optic electric field sensor with piezoelectric body sensor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-522683