DE3042815A1 - Locating faults in optical transmission paths - by feeding output of regenerator back via adjacent opposite-direction regenerator - Google Patents

Locating faults in optical transmission paths - by feeding output of regenerator back via adjacent opposite-direction regenerator

Info

Publication number
DE3042815A1
DE3042815A1 DE19803042815 DE3042815A DE3042815A1 DE 3042815 A1 DE3042815 A1 DE 3042815A1 DE 19803042815 DE19803042815 DE 19803042815 DE 3042815 A DE3042815 A DE 3042815A DE 3042815 A1 DE3042815 A1 DE 3042815A1
Authority
DE
Grant status
Application
Patent type
Prior art keywords
regenerator
loop
optical
signal
transmission paths
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.)
Granted
Application number
DE19803042815
Other languages
German (de)
Other versions
DE3042815C2 (en )
Inventor
Ralf Michael Ing Grad Stach
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.)
ANT Nachrichtentechnik GmbH
Original Assignee
Licentia Patent-Verwaltungs-GmbH
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

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B10/00Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/07Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B10/00Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/07Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
    • H04B10/075Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
    • H04B10/077Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using a supervisory or additional signal
    • H04B10/0777Monitoring line amplifier or line repeater equipment

Abstract

The method involves passing the signal from a selected regenerator via a monitor loop to the input of the adjacent regenerator operating in the opposite direction and then back to the selected loop input. All circuit elements of the regenerators connected by the monitor loop are tested without the use of expensive optical loop switching or loading the transmission paths with additional damping. The light signal produced by the optical source (LD) at the output of the selected regenerator is converted into an electrical signal. The electrical signal is passed along a conductor (9) contg. a loop switch (4) and is converted back into an optical signal. The optical signal is fed to the optical receiver (OE) at the input to the adjacent regenerator.
DE19803042815 1980-11-13 1980-11-13 Expired DE3042815C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19803042815 DE3042815C2 (en) 1980-11-13 1980-11-13

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19803042815 DE3042815C2 (en) 1980-11-13 1980-11-13

Publications (2)

Publication Number Publication Date
DE3042815A1 true true DE3042815A1 (en) 1982-05-19
DE3042815C2 DE3042815C2 (en) 1985-10-17

Family

ID=6116681

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19803042815 Expired DE3042815C2 (en) 1980-11-13 1980-11-13

Country Status (1)

Country Link
DE (1) DE3042815C2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2529735A1 (en) * 1982-07-03 1984-01-06 Philips Nv Apparatus for detecting defects in a transmission system information optically
EP0111582A1 (en) * 1982-12-18 1984-06-27 ANT Nachrichtentechnik GmbH Fault locating arrangement for an optical fibre cable link
US4887309A (en) * 1987-07-16 1989-12-12 Telefonaktiebolaget L M Ericsson Optical repeater for fault tracing in an optical transmission system
EP0531047A2 (en) * 1991-09-03 1993-03-10 AT&T Corp. Optical line monitor
US5825515A (en) * 1991-09-03 1998-10-20 Lucent Technologies Inc. Supervisory apparatus for optical transmission system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1938211A1 (en) * 1969-07-28 1971-02-11 Licentia Gmbh Circuitry for forming a UEberwachungsschleife in yield stronger Enver

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1938211A1 (en) * 1969-07-28 1971-02-11 Licentia Gmbh Circuitry for forming a UEberwachungsschleife in yield stronger Enver

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2529735A1 (en) * 1982-07-03 1984-01-06 Philips Nv Apparatus for detecting defects in a transmission system information optically
US4660973A (en) * 1982-07-03 1987-04-28 U.S. Philips Corporation Arrangement for locating faults in an optical information transmission system
EP0111582A1 (en) * 1982-12-18 1984-06-27 ANT Nachrichtentechnik GmbH Fault locating arrangement for an optical fibre cable link
US4887309A (en) * 1987-07-16 1989-12-12 Telefonaktiebolaget L M Ericsson Optical repeater for fault tracing in an optical transmission system
EP0531047A2 (en) * 1991-09-03 1993-03-10 AT&T Corp. Optical line monitor
EP0531047A3 (en) * 1991-09-03 1994-04-27 American Telephone & Telegraph
US5825515A (en) * 1991-09-03 1998-10-20 Lucent Technologies Inc. Supervisory apparatus for optical transmission system

Also Published As

Publication number Publication date Type
DE3042815C2 (en) 1985-10-17 grant

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Legal Events

Date Code Title Description
OM8 Search report available as to paragraph 43 lit. 1 sentence 1 patent law
OP8 Request for examination as to paragraph 44 patent law
8127 New person/name/address of the applicant

Owner name: AEG-TELEFUNKEN NACHRICHTENTECHNIK GMBH, 7150 BACKN

8127 New person/name/address of the applicant

Owner name: ANT NACHRICHTENTECHNIK GMBH, 7150 BACKNANG, DE

8125 Change of the main classification

Ipc: H04B 17/00

D2 Grant after examination
8364 No opposition during term of opposition
8320 Willingness to grant licences declared (paragraph 23)
8339 Ceased/non-payment of the annual fee