IT1269223B - PROCEDURE AND DEVICE FOR THE TRANSMISSION OF INFORMATION ON OPTICAL FIBER - Google Patents

PROCEDURE AND DEVICE FOR THE TRANSMISSION OF INFORMATION ON OPTICAL FIBER

Info

Publication number
IT1269223B
IT1269223B ITTO910710A ITTO910710A IT1269223B IT 1269223 B IT1269223 B IT 1269223B IT TO910710 A ITTO910710 A IT TO910710A IT TO910710 A ITTO910710 A IT TO910710A IT 1269223 B IT1269223 B IT 1269223B
Authority
IT
Italy
Prior art keywords
procedure
transmission
information
optical fiber
fiber
Prior art date
Application number
ITTO910710A
Other languages
Italian (it)
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 filed Critical
Publication of ITTO910710A0 publication Critical patent/ITTO910710A0/it
Publication of ITTO910710A1 publication Critical patent/ITTO910710A1/en
Application granted granted Critical
Publication of IT1269223B publication Critical patent/IT1269223B/en

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)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Length Measuring Devices By Optical Means (AREA)
ITTO910710A 1990-09-21 1991-09-19 PROCEDURE AND DEVICE FOR THE TRANSMISSION OF INFORMATION ON OPTICAL FIBER IT1269223B (en)

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 (3)

Publication Number Publication Date
ITTO910710A0 ITTO910710A0 (en) 1991-09-19
ITTO910710A1 ITTO910710A1 (en) 1993-03-19
IT1269223B true IT1269223B (en) 1997-03-21

Family

ID=9400534

Family Applications (1)

Application Number Title Priority Date Filing Date
ITTO910710A IT1269223B (en) 1990-09-21 1991-09-19 PROCEDURE AND DEVICE FOR THE TRANSMISSION OF INFORMATION ON OPTICAL FIBER

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
WO1983004150A1 (en) * 1982-05-06 1983-11-24 Nippon Telegraph And Telephone Public 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
ITTO910710A0 (en) 1991-09-19
ITTO910710A1 (en) 1993-03-19
DE4131009C1 (en) 1997-05-22
GB2303753B (en) 1997-07-09
SE9102563L (en) 2000-02-09
FR2738430A1 (en) 1997-03-07
GB2303753A (en) 1997-02-26
CA2051913C (en) 1999-02-16
GB9119976D0 (en) 1997-01-08
SE513651C2 (en) 2000-10-16
FR2738430B1 (en) 1998-03-13
CA2051913A1 (en) 1996-12-06
NL9101538A (en) 1997-03-03

Similar Documents

Publication Publication Date Title
BR9201348A (en) APPLIANCE FOR FIBER OPTIC INTERFACE AND PROVISION METHOD OF THE SAME
FI961060L (en) Optical fiber system device
FI961062L (en) Optical fiber system device
BR9503158A (en) Optical fiber guidance system and equipment comprising optical fiber guidance system
IT1298254B1 (en) FIBER OPTIC AMPLIFIER AND OPTICAL COMMUNICATION SYSTEM USING THE SAME
DE69507486D1 (en) HIGH PERFORMANCE FIBER OPTICAL AMPLIFIER OR LASER DEVICE
ES530378A0 (en) PROCEDURE AND DEVICE FOR THE CONNECTION OF OPTICAL FIBERS.
DE69533076D1 (en) Optical data transmission and location device
BR8900185A (en) METHOD AND FIBER FOR AMPLIFICATION OF OPTICAL SIGNS
MX9202155A (en) FIBER OPTIC ARRANGEMENT JOINT DEVICE.
NO903982D0 (en) UNDERWATER UNIT WHICH IS EXTENSIVE AND INCLUDES OPTICAL FIBERS.
DE69127215D1 (en) Optical transmission method and optical transmission system
IT1273965B (en) PROCEDURE AND EQUIPMENT FOR ATTENUATING THE OPTICAL WAVING SIGNS ON A FINISHED SURFACE
DE69106146D1 (en) FIBER OPTICAL COUPLING DEVICE AND METHOD.
IT9067033A0 (en) OPTICAL TRANSMISSION EQUIPMENT
PT95668A (en) AMPLIFIER FOR OPTICAL FIBER TELECOMMUNICATION LINES AND OPTICAL FIBER TELECOMMUNICATION LINES INCORPORATING THE REFERENCE AMPLIFIER
IT1206261B (en) OPTICAL SCANNING DEVICE
IT7826817A0 (en) DEVICE AND METHOD FOR FIXING THE END OF AN OPTICAL FIBER.
ITTO950290A0 (en) PROCEDURE AND EQUIPMENT FOR THE MEASUREMENT OF THE KERR NONLINEARITY COEFFICIENT IN A SINGLE-MODE OPTIC FIBER.
IT1271254B (en) OPTICAL MASKING DEVICE
IT1269223B (en) PROCEDURE AND DEVICE FOR THE TRANSMISSION OF INFORMATION ON OPTICAL FIBER
DE69027356D1 (en) Fiber optic data connection system
IT1273064B (en) DEVICE FOR THE OPTICAL PROCESSING OF LIGHT RADIATIONS
IT220098Z2 (en) FIBER OPTIC PASSIVE COUPLER
ITGE910031A1 (en) METHOD AND DEVICE FOR THE PRODUCTION OF FIBER PADS

Legal Events

Date Code Title Description
0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19980831