IT1228754B - Metodo e dispositivo per compensare le variazioni accidentali dei segnali ottici di misura intervenenti nelle linee ottiche di trasmissione a distanza degli stessi. - Google Patents

Metodo e dispositivo per compensare le variazioni accidentali dei segnali ottici di misura intervenenti nelle linee ottiche di trasmissione a distanza degli stessi.

Info

Publication number
IT1228754B
IT1228754B IT8919918A IT1991889A IT1228754B IT 1228754 B IT1228754 B IT 1228754B IT 8919918 A IT8919918 A IT 8919918A IT 1991889 A IT1991889 A IT 1991889A IT 1228754 B IT1228754 B IT 1228754B
Authority
IT
Italy
Prior art keywords
optical
compensate
themselves
measurement signals
remote transmission
Prior art date
Application number
IT8919918A
Other languages
English (en)
Other versions
IT8919918A0 (it
Inventor
Paolo Boero
Francesco Simonelli
Stefano Cecchi
Original Assignee
Pirelli Cavi Spa
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 Pirelli Cavi Spa filed Critical Pirelli Cavi Spa
Priority to IT8919918A priority Critical patent/IT1228754B/it
Publication of IT8919918A0 publication Critical patent/IT8919918A0/it
Priority to FR9003945A priority patent/FR2645376B1/fr
Application granted granted Critical
Publication of IT1228754B publication Critical patent/IT1228754B/it

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
    • H04B10/25—Arrangements specific to fibre transmission
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
    • G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
    • G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
    • G01D5/344—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells using polarisation
    • 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
    • H04B10/25—Arrangements specific to fibre transmission
    • H04B10/2507—Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
IT8919918A 1989-03-28 1989-03-28 Metodo e dispositivo per compensare le variazioni accidentali dei segnali ottici di misura intervenenti nelle linee ottiche di trasmissione a distanza degli stessi. IT1228754B (it)

Priority Applications (2)

Application Number Priority Date Filing Date Title
IT8919918A IT1228754B (it) 1989-03-28 1989-03-28 Metodo e dispositivo per compensare le variazioni accidentali dei segnali ottici di misura intervenenti nelle linee ottiche di trasmissione a distanza degli stessi.
FR9003945A FR2645376B1 (fr) 1989-03-28 1990-03-28 Procede et dispositif de compensation des variations accidentelles dans les signaux optiques de mesure se produisant sur les lignes optiques de transmission a distance de ces signaux

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT8919918A IT1228754B (it) 1989-03-28 1989-03-28 Metodo e dispositivo per compensare le variazioni accidentali dei segnali ottici di misura intervenenti nelle linee ottiche di trasmissione a distanza degli stessi.

Publications (2)

Publication Number Publication Date
IT8919918A0 IT8919918A0 (it) 1989-03-28
IT1228754B true IT1228754B (it) 1991-07-03

Family

ID=11162332

Family Applications (1)

Application Number Title Priority Date Filing Date
IT8919918A IT1228754B (it) 1989-03-28 1989-03-28 Metodo e dispositivo per compensare le variazioni accidentali dei segnali ottici di misura intervenenti nelle linee ottiche di trasmissione a distanza degli stessi.

Country Status (2)

Country Link
FR (1) FR2645376B1 (it)
IT (1) IT1228754B (it)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1269545B (de) * 1966-06-24 1968-05-30 Telefunken Patent Verfahren zur Nachrichtenuebertragung mittels Laserstrahlen
JPS59229938A (ja) * 1983-06-10 1984-12-24 Nec Corp ２ル−ト化光通信の位相同期方式

Also Published As

Publication number Publication date
FR2645376A1 (fr) 1990-10-05
FR2645376B1 (fr) 1993-04-09
IT8919918A0 (it) 1989-03-28

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Legal Events

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

Effective date: 19980327