FR2358671A1 - TOTAL OPTICAL EQUALIZER FOR THE TRANSMISSION OF SIGNALS BY MULTIMODES OPTICAL GUIDES - Google Patents

TOTAL OPTICAL EQUALIZER FOR THE TRANSMISSION OF SIGNALS BY MULTIMODES OPTICAL GUIDES

Info

Publication number
FR2358671A1
FR2358671A1 FR7720596A FR7720596A FR2358671A1 FR 2358671 A1 FR2358671 A1 FR 2358671A1 FR 7720596 A FR7720596 A FR 7720596A FR 7720596 A FR7720596 A FR 7720596A FR 2358671 A1 FR2358671 A1 FR 2358671A1
Authority
FR
France
Prior art keywords
optical
multimodes
signals
transmission
equalizer
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
FR7720596A
Other languages
French (fr)
Other versions
FR2358671B1 (en
Inventor
Pietro Di Vita
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.)
Telecom Italia SpA
Original Assignee
CSELT Centro Studi e Laboratori Telecomunicazioni 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 CSELT Centro Studi e Laboratori Telecomunicazioni SpA filed Critical CSELT Centro Studi e Laboratori Telecomunicazioni SpA
Publication of FR2358671A1 publication Critical patent/FR2358671A1/en
Application granted granted Critical
Publication of FR2358671B1 publication Critical patent/FR2358671B1/fr
Granted 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
    • H04B10/25—Arrangements specific to fibre transmission
    • H04B10/2507—Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
    • G02B6/14—Mode converters

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Couplings Of Light Guides (AREA)
  • Optical Integrated Circuits (AREA)

Abstract

Egaliseur optique total pour guides optiques pour télécommunications du type multimode à saut d'indice de réfraction, apte à connecter deux tronçons de guide. Il est constitué par un système optique qui se compose de, ou est équivalent à deux lentilles réfractrices L, L' identiques, coaxiales entre elles et auxdits tronçons de guide g, g', disposées dans deux plans parallèles et perpendiculaires à l'axe du système, ayant une distance foca e f(r) variable selon la distance r a l'axe du système, ladite distance focale f(r) étant une fonction mathématiquement exprimée pour les fibres à faible guidage par la relation :Total optical equalizer for optical guides for telecommunications of the multimode type with step of refraction index, suitable for connecting two guide sections. It consists of an optical system which consists of, or is equivalent to, two identical refracting lenses L, L ', coaxial with each other and with said guide sections g, g', arranged in two planes parallel and perpendicular to the axis of the system, having a distance foca ef (r) variable according to the distance ra the axis of the system, said focal length f (r) being a function mathematically expressed for fibers with weak guidance by the relation:

FR7720596A 1976-07-16 1977-07-05 TOTAL OPTICAL EQUALIZER FOR THE TRANSMISSION OF SIGNALS BY MULTIMODES OPTICAL GUIDES Granted FR2358671A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT6878476A IT1071131B (en) 1976-07-16 1976-07-16 TOTAL OPTICAL EQUALIZER FOR SIGNALS TRANSMISSION ON MULTIMODE OPTICAL GUIDES

Publications (2)

Publication Number Publication Date
FR2358671A1 true FR2358671A1 (en) 1978-02-10
FR2358671B1 FR2358671B1 (en) 1980-12-26

Family

ID=11310574

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7720596A Granted FR2358671A1 (en) 1976-07-16 1977-07-05 TOTAL OPTICAL EQUALIZER FOR THE TRANSMISSION OF SIGNALS BY MULTIMODES OPTICAL GUIDES

Country Status (6)

Country Link
CA (1) CA1072790A (en)
DE (1) DE2731957C3 (en)
FR (1) FR2358671A1 (en)
GB (1) GB1582532A (en)
IT (1) IT1071131B (en)
NL (1) NL7707788A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH626729A5 (en) * 1978-12-01 1981-11-30 Cabloptic Sa
DE3010347C2 (en) * 1980-03-18 1984-08-30 Fa. Carl Zeiss, 7920 Heidenheim Device for connecting optical fibers
DE3024104C2 (en) * 1980-06-27 1986-02-20 Fa. Carl Zeiss, 7920 Heidenheim Method of making an integrated micro-optic device for use with multimode optical fibers
DE3112167A1 (en) * 1981-03-27 1982-10-14 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Optical coupling arrangement
DE3212590A1 (en) * 1982-04-03 1983-10-13 Wandel & Goltermann Gmbh & Co, 7412 Eningen Method and device for the optical equalisation of signals being transmitted via optical fibres
GB2220501A (en) * 1988-07-06 1990-01-10 Plessey Co Plc Coupling waveguides using transverse cylindrical lenses
DE4014796A1 (en) * 1990-05-09 1991-11-14 Rheydt Kabelwerk Ag Linearising transfer characteristic function - processing signal by compensation circuit based on filtered components for electronic component or circuit

Also Published As

Publication number Publication date
NL7707788A (en) 1978-01-18
DE2731957C3 (en) 1980-03-06
FR2358671B1 (en) 1980-12-26
DE2731957B2 (en) 1979-05-31
IT1071131B (en) 1985-04-02
GB1582532A (en) 1981-01-07
DE2731957A1 (en) 1978-01-19
CA1072790A (en) 1980-03-04

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Legal Events

Date Code Title Description
ST Notification of lapse