JPH02184772A - Electric field antenna using optical crystal - Google Patents

Electric field antenna using optical crystal

Info

Publication number
JPH02184772A
JPH02184772A JP380589A JP380589A JPH02184772A JP H02184772 A JPH02184772 A JP H02184772A JP 380589 A JP380589 A JP 380589A JP 380589 A JP380589 A JP 380589A JP H02184772 A JPH02184772 A JP H02184772A
Authority
JP
Japan
Prior art keywords
optical
antenna
crystal
optical modulator
light
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP380589A
Inventor
Mitsuo Hattori
Shoichi Kuramoto
Nobuo Kuwabara
Masaharu Sato
Original Assignee
Nippon Telegr & Teleph Corp <Ntt>
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 Nippon Telegr & Teleph Corp <Ntt> filed Critical Nippon Telegr & Teleph Corp <Ntt>
Priority to JP380589A priority Critical patent/JPH02184772A/en
Publication of JPH02184772A publication Critical patent/JPH02184772A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To eliminate the influence of an optical cable which is extended round by providing a deflector, optical crystal, and an analyzer.
CONSTITUTION: The light from a light source 1 is guided to the optical modulator of the part of an antenna 8 by a multi-mode fiber 12 and its output is guided to a receiver 16 by a fiber 12. In this case, no single-mode fiber is used, so tolerance to bending stress, etc., is obtained. The optical modulator which uses the optical crystal 9 extract a linear polarized wave component having a 45° angle to the optical axis of the crystal 9 from an unmodulated signal and outputs an optically modulated signal which is modulated according to the intensity of an electric field applied to the crystal 9. At this time, the part of the optical modulator is integrated at the antenna part 8, so the specific linear polarized wave component is extracted and then the shape of the elliptic polarized light of the unmodulated signal entering the optical modulator is constant or varied at random. Therefore, the antenna 8 which uses the fiber 12 for the transmission of light signals between the light source 1 and antenna 8 is realized and not influenced by the laying-round state of the optical cable.
COPYRIGHT: (C)1990,JPO&Japio
JP380589A 1989-01-12 1989-01-12 Electric field antenna using optical crystal Pending JPH02184772A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP380589A JPH02184772A (en) 1989-01-12 1989-01-12 Electric field antenna using optical crystal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP380589A JPH02184772A (en) 1989-01-12 1989-01-12 Electric field antenna using optical crystal

Publications (1)

Publication Number Publication Date
JPH02184772A true JPH02184772A (en) 1990-07-19

Family

ID=11567409

Family Applications (1)

Application Number Title Priority Date Filing Date
JP380589A Pending JPH02184772A (en) 1989-01-12 1989-01-12 Electric field antenna using optical crystal

Country Status (1)

Country Link
JP (1) JPH02184772A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04172261A (en) * 1990-11-05 1992-06-19 Toyota Central Res & Dev Lab Inc Apparatus for measuring strength of electromagnetic field
JPH04172260A (en) * 1990-11-05 1992-06-19 Toyota Central Res & Dev Lab Inc Apparatus for measuring strength of electromagnetic field
JPH04332878A (en) * 1991-05-07 1992-11-19 Toyota Central Res & Dev Lab Inc Electromagnetic field intensity measuring device
US5799116A (en) * 1995-08-08 1998-08-25 Sharp Kabushiki Kaisha Electromagnetic wave-to-optical signal converting and modulating device and a communication system using the same
US5969341A (en) * 1996-10-11 1999-10-19 Kabushiki Kaisha Toyota Chuo Kenkyusho Optical integrated voltage sensor for optically measuring the magnitude of a voltage

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56114766A (en) * 1980-02-15 1981-09-09 Sumitomo Electric Ind Ltd Voltage-electric field measuring instrument by means of light
JPS57160071A (en) * 1981-03-30 1982-10-02 Meidensha Electric Mfg Co Ltd Electric field detector

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56114766A (en) * 1980-02-15 1981-09-09 Sumitomo Electric Ind Ltd Voltage-electric field measuring instrument by means of light
JPS57160071A (en) * 1981-03-30 1982-10-02 Meidensha Electric Mfg Co Ltd Electric field detector

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04172261A (en) * 1990-11-05 1992-06-19 Toyota Central Res & Dev Lab Inc Apparatus for measuring strength of electromagnetic field
JPH04172260A (en) * 1990-11-05 1992-06-19 Toyota Central Res & Dev Lab Inc Apparatus for measuring strength of electromagnetic field
JPH04332878A (en) * 1991-05-07 1992-11-19 Toyota Central Res & Dev Lab Inc Electromagnetic field intensity measuring device
US5799116A (en) * 1995-08-08 1998-08-25 Sharp Kabushiki Kaisha Electromagnetic wave-to-optical signal converting and modulating device and a communication system using the same
US5969341A (en) * 1996-10-11 1999-10-19 Kabushiki Kaisha Toyota Chuo Kenkyusho Optical integrated voltage sensor for optically measuring the magnitude of a voltage

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