FR2738430B1 - METHOD AND DEVICE FOR TRANSMITTING INFORMATION ON FIBER OPTICS WITH INTRUSION DETECTION AND / OR LOCATION - Google Patents

METHOD AND DEVICE FOR TRANSMITTING INFORMATION ON FIBER OPTICS WITH INTRUSION DETECTION AND / OR LOCATION

Info

Publication number
FR2738430B1
FR2738430B1 FR9011685A FR9011685A FR2738430B1 FR 2738430 B1 FR2738430 B1 FR 2738430B1 FR 9011685 A FR9011685 A FR 9011685A FR 9011685 A FR9011685 A FR 9011685A FR 2738430 B1 FR2738430 B1 FR 2738430B1
Authority
FR
France
Prior art keywords
location
transmitting information
intrusion detection
fiber optics
optics
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.)
Expired - Fee Related
Application number
FR9011685A
Other languages
French (fr)
Other versions
FR2738430A1 (en
Inventor
Jacques Auge
Jose Chesnoy
Philippe Darbon
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alcatel Lucent SAS
Original Assignee
Alcatel Alsthom Compagnie Generale dElectricite
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 Alcatel Alsthom Compagnie Generale dElectricite filed Critical Alcatel Alsthom Compagnie Generale dElectricite
Priority to FR9011685A priority Critical patent/FR2738430B1/en
Priority to SE9102563A priority patent/SE513651C2/en
Priority to NL9101538A priority patent/NL9101538A/en
Priority to DE4131009A priority patent/DE4131009C1/en
Priority to GB9119976A priority patent/GB2303753B/en
Priority to ITTO910710A priority patent/IT1269223B/en
Priority to CA002051913A priority patent/CA2051913C/en
Publication of FR2738430A1 publication Critical patent/FR2738430A1/en
Application granted granted Critical
Publication of FR2738430B1 publication Critical patent/FR2738430B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/80—Optical aspects relating to the use of optical transmission for specific applications, not provided for in groups H04B10/03 - H04B10/70, e.g. optical power feeding or optical transmission through water
    • H04B10/85—Protection from unauthorised access, e.g. eavesdrop protection

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Testing Of Optical Devices Or Fibers (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
FR9011685A 1990-09-21 1990-09-21 METHOD AND DEVICE FOR TRANSMITTING INFORMATION ON FIBER OPTICS WITH INTRUSION DETECTION AND / OR LOCATION Expired - Fee Related FR2738430B1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
FR9011685A FR2738430B1 (en) 1990-09-21 1990-09-21 METHOD AND DEVICE FOR TRANSMITTING INFORMATION ON FIBER OPTICS WITH INTRUSION DETECTION AND / OR LOCATION
SE9102563A SE513651C2 (en) 1990-09-21 1991-09-06 Method and apparatus for transmitting information via an optical fiber, whereby interference is detected and / or located
NL9101538A NL9101538A (en) 1990-09-21 1991-09-12 Method and device for transferring information about a radiation fiber with detection and / or location of burglary.
DE4131009A DE4131009C1 (en) 1990-09-21 1991-09-18 Method and device for monitoring intrusions on an information-transmitting optical connecting fiber
GB9119976A GB2303753B (en) 1990-09-21 1991-09-19 Method and apparatus for transmitting information over an optical fiber with intrusion being detected and located
ITTO910710A IT1269223B (en) 1990-09-21 1991-09-19 PROCEDURE AND DEVICE FOR THE TRANSMISSION OF INFORMATION ON OPTICAL FIBER
CA002051913A CA2051913C (en) 1990-09-21 1991-09-20 Process and device for transmitting informations over optical fibers with detection and/or localization of intrusions

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9011685A FR2738430B1 (en) 1990-09-21 1990-09-21 METHOD AND DEVICE FOR TRANSMITTING INFORMATION ON FIBER OPTICS WITH INTRUSION DETECTION AND / OR LOCATION

Publications (2)

Publication Number Publication Date
FR2738430A1 FR2738430A1 (en) 1997-03-07
FR2738430B1 true FR2738430B1 (en) 1998-03-13

Family

ID=9400534

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9011685A Expired - Fee Related FR2738430B1 (en) 1990-09-21 1990-09-21 METHOD AND DEVICE FOR TRANSMITTING INFORMATION ON FIBER OPTICS WITH INTRUSION DETECTION AND / OR LOCATION

Country Status (7)

Country Link
CA (1) CA2051913C (en)
DE (1) DE4131009C1 (en)
FR (1) FR2738430B1 (en)
GB (1) GB2303753B (en)
IT (1) IT1269223B (en)
NL (1) NL9101538A (en)
SE (1) SE513651C2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6072614A (en) * 1997-08-21 2000-06-06 Nortel Networks Corporation Monitoring induced counterpropagating signals in optical communications systems

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4134642A (en) * 1976-04-16 1979-01-16 Northern Telecom Limited Optical fibre with increased security
FR2453403A1 (en) * 1979-04-06 1980-10-31 Bertin & Cie Optical fibre link parasitic connection detector - uses second source whose amplitude and time shifts are memorised
US4386629A (en) * 1980-07-31 1983-06-07 Raychem Corporation Apparatus for internal pipe protection
JPS57118136A (en) * 1981-01-14 1982-07-22 Nippon Telegr & Teleph Corp <Ntt> Fault searching method by optical fiber
CA1205307A (en) * 1981-12-07 1986-06-03 Venkata A. Bhagavatula Low dispersion, low-loss single-mode optical waveguide
EP0117868B1 (en) * 1982-05-06 1989-10-04 Nippon Telegraph and Telephone Corporation Method and device for separating position of fault in light transmission line
GB8709900D0 (en) * 1987-04-27 1987-08-05 British Telecomm Surveillance system
DE3743678A1 (en) * 1987-12-23 1989-07-06 Philips Patentverwaltung OPTICAL BACKFLOW MEASURING DEVICE
JPH0227231A (en) * 1988-07-18 1990-01-30 Nippon Telegr & Teleph Corp <Ntt> Measurement of length-wise distortion for optical fiber
FR2635876B1 (en) * 1988-08-26 1992-10-16 Comp Generale Electricite SINGLE-MODE OPTICAL FIBER PROTECTED AGAINST HACKING OF TRANSMITTED INFORMATION AND TRANSMISSION METHOD USING THE SAME

Also Published As

Publication number Publication date
GB2303753A (en) 1997-02-26
CA2051913A1 (en) 1996-12-06
FR2738430A1 (en) 1997-03-07
CA2051913C (en) 1999-02-16
DE4131009C1 (en) 1997-05-22
GB2303753B (en) 1997-07-09
IT1269223B (en) 1997-03-21
SE513651C2 (en) 2000-10-16
GB9119976D0 (en) 1997-01-08
SE9102563L (en) 2000-02-09
ITTO910710A0 (en) 1991-09-19
NL9101538A (en) 1997-03-03
ITTO910710A1 (en) 1993-03-19

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Legal Events

Date Code Title Description
CD Change of name or company name
ST Notification of lapse