WO2014081326A3 - Guided optical polarimetric sensor based on lithium niobate for measuring the ac/dc electric fields - Google Patents

Guided optical polarimetric sensor based on lithium niobate for measuring the ac/dc electric fields Download PDF

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Publication number
WO2014081326A3
WO2014081326A3 PCT/RO2012/000026 RO2012000026W WO2014081326A3 WO 2014081326 A3 WO2014081326 A3 WO 2014081326A3 RO 2012000026 W RO2012000026 W RO 2012000026W WO 2014081326 A3 WO2014081326 A3 WO 2014081326A3
Authority
WO
WIPO (PCT)
Prior art keywords
measuring
optical
dielectric
sensor
optical fibre
Prior art date
Application number
PCT/RO2012/000026
Other languages
French (fr)
Other versions
WO2014081326A2 (en
Inventor
Rudi BRATOVICH
Angelo Barberis
Original Assignee
A.O.T. Advanced Optical Transducer Company S.R.L.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by A.O.T. Advanced Optical Transducer Company S.R.L. filed Critical A.O.T. Advanced Optical Transducer Company S.R.L.
Publication of WO2014081326A2 publication Critical patent/WO2014081326A2/en
Publication of WO2014081326A3 publication Critical patent/WO2014081326A3/en

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
    • G01R1/02—General constructional details
    • G01R1/06—Measuring leads; Measuring probes
    • G01R1/067—Measuring probes
    • G01R1/07—Non contact-making probes
    • G01R1/071—Non contact-making probes containing electro-optic elements
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
    • G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
    • G01R15/24—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using light-modulating devices
    • G01R15/241—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using light-modulating devices using electro-optical modulators, e.g. electro-absorption
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
    • G01R29/08—Measuring electromagnetic field characteristics
    • G01R29/0864—Measuring electromagnetic field characteristics characterised by constructional or functional features
    • G01R29/0878—Sensors; antennas; probes; detectors
    • G01R29/0885—Sensors; antennas; probes; detectors using optical probes, e.g. electro-optical, luminiscent, glow discharge, or optical interferometers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/28—Testing of electronic circuits, e.g. by signal tracer
    • G01R31/302—Contactless testing
    • G01R31/308—Contactless testing using non-ionising electromagnetic radiation, e.g. optical radiation

Abstract

The invention refers to an optical sensor for measuring the AC/DC electric fields. The suggested sensor may be used in air or in different fluids without affecting the electric field. The main industrial application of the sensor is measuring in real time the health of the HV component used in the AC/DC transmission line or in the electricity transmission substance. The optical polarimetric sensor for measuring the electric field is formed of at least a "z- cut" LiNbO3 electro-optic crystal as sensitive optical material (10). a probe (6), with physical axes parallel with the crystal axes, whose birefringence characteristics are modulated by the electric field in contact, as well as a light source (1), an optical fibre (2) and some dielectric analysis components, including a GRIN lens (7), a polaroid (8), a retarder plate λ/4, (9), a dielectric mirror (12) and a photo diode (5) protected by a dielectric case (13, 13'). The device also includes a Y derivation (3) for transmitting a light source to the probe T (6) and from it to the photo diode (5), coupled to an optical fibre (2) coupling (4), and inside the probe (6) the electro-optical crystal (10) is framed by the polaroid (10) and the retarder plate λ/4, (9), of the one part and the retarder plate λ/8, (11) and the dielectric mirror (12) of the other part; in order to align the light beam wit this analyzer assembly, the GRIN lens (7) with attached optical fibre (2) is introduced in a cased block (14) aligned with the polaroid (8). As part of a real invention example, the GRIN lens (7) with attached optical fibre (2) is fixed in a dielectric sphere (15) perforated axially, that can rotate between two plates (16) and (17) fixed in the cased block (14).
PCT/RO2012/000026 2012-08-16 2012-09-21 Guided optical polarimetric sensor based on lithium niobate for measuring the ac/dc electric fields WO2014081326A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ROA201200602 2012-08-16
ROA201200602A RO128236A0 (en) 2012-08-16 2012-08-16 Controlled polarimetry optical sensor based on lithium columbate for measuring ac and dc electric fields

Publications (2)

Publication Number Publication Date
WO2014081326A2 WO2014081326A2 (en) 2014-05-30
WO2014081326A3 true WO2014081326A3 (en) 2014-09-12

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/RO2012/000026 WO2014081326A2 (en) 2012-08-16 2012-09-21 Guided optical polarimetric sensor based on lithium niobate for measuring the ac/dc electric fields

Country Status (2)

Country Link
RO (1) RO128236A0 (en)
WO (1) WO2014081326A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL2020586B1 (en) * 2018-03-14 2019-09-26 Dare!! B V Probe with antenna
CN110014227B (en) * 2019-04-25 2021-08-20 大族激光科技产业集团股份有限公司 Laser cutting method and laser cutting system for cutting polaroid

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0458255A2 (en) * 1990-05-25 1991-11-27 PIRELLI CAVI S.p.A. Polarimetric directional field sensor
US5111135A (en) * 1989-07-12 1992-05-05 Ngk Insulators, Ltd. Method for optically measuring electric field and optical voltage/electric-field sensor
US5157324A (en) * 1989-12-26 1992-10-20 Commissariat A L'energie Atomique Improved electro-optical crystal
US20090066952A1 (en) * 2007-09-06 2009-03-12 Dong Ho Wu Apparatus and system for electro magnetic field measurements and automatic analyses of phase modulated optical signals from electrooptic devices
US20090274410A1 (en) * 2006-06-16 2009-11-05 Institut National Polytechnique De Grenoble Electrooptic probe for measuring temperature and electromagnetic field

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000105256A (en) 1998-09-29 2000-04-11 Nissin Electric Co Ltd Photoelectric voltage sensor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5111135A (en) * 1989-07-12 1992-05-05 Ngk Insulators, Ltd. Method for optically measuring electric field and optical voltage/electric-field sensor
US5157324A (en) * 1989-12-26 1992-10-20 Commissariat A L'energie Atomique Improved electro-optical crystal
EP0458255A2 (en) * 1990-05-25 1991-11-27 PIRELLI CAVI S.p.A. Polarimetric directional field sensor
US20090274410A1 (en) * 2006-06-16 2009-11-05 Institut National Polytechnique De Grenoble Electrooptic probe for measuring temperature and electromagnetic field
US20090066952A1 (en) * 2007-09-06 2009-03-12 Dong Ho Wu Apparatus and system for electro magnetic field measurements and automatic analyses of phase modulated optical signals from electrooptic devices

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
KOBAYASHI R ET AL: "THEORETICAL ANALYSIS OF THE SENSITIVITY OF ELECTRIC FIELD SENSORS USING LINBO3 OPTICAL MODULATOR", ELECTRONICS & COMMUNICATIONS IN JAPAN, PART I - COMMUNICATIONS, WILEY, HOBOKEN, NJ, US, vol. 80, no. 12, 1 December 1997 (1997-12-01), pages 79 - 89, XP000739130, ISSN: 8756-6621, DOI: 10.1002/(SICI)1520-6424(199701)80:12<79::AID-ECJA9>3.0.CO;2-M *
TADA K ET AL: "New Pockels field sensor with ferroelectric liquid-crystal phase modulator", REVIEW OF SCIENTIFIC INSTRUMENTS, AIP, MELVILLE, NY, US, vol. 74, no. 5, 1 May 2003 (2003-05-01), pages 2664 - 2669, XP012040820, ISSN: 0034-6748, DOI: 10.1063/1.1568537 *

Also Published As

Publication number Publication date
RO128236A0 (en) 2013-03-29
WO2014081326A2 (en) 2014-05-30

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