BE900162A - Reseau de distribution local a acces multiples. - Google Patents

Reseau de distribution local a acces multiples.

Info

Publication number
BE900162A
BE900162A BE0/213335A BE213335A BE900162A BE 900162 A BE900162 A BE 900162A BE 0/213335 A BE0/213335 A BE 0/213335A BE 213335 A BE213335 A BE 213335A BE 900162 A BE900162 A BE 900162A
Authority
BE
Belgium
Prior art keywords
distribution network
local distribution
multiple access
network
access local
Prior art date
Application number
BE0/213335A
Other languages
English (en)
Inventor
T H Wood
Original Assignee
American Telephone & Telegraph
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 American Telephone & Telegraph filed Critical American Telephone & Telegraph
Publication of BE900162A publication Critical patent/BE900162A/fr

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
    • H04B10/2581—Multimode transmission
    • 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
    • G02B6/24—Coupling light guides
    • G02B6/26—Optical coupling means
    • G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
    • G02B6/2804—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers
    • G02B6/2821—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers using lateral coupling between contiguous fibres to split or combine optical signals

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)
  • Small-Scale Networks (AREA)
  • Optical Integrated Circuits (AREA)

Abstract

Pour minimiser la puissance qui est extraite à chaque dérivation (10) d'un réseau de distribution local, tout en maximisant le rendement de couplage entre l'émetteur local (15) et le réseau, on utilise un coupleur à sélectivité de modes (11) en association avec un mélangeur de modes (12). L'émetteur, fonctionnant dans le mode préférentiel, couple un pourcentage élevé de son signal vers le réseau, dans lequel ce signal est réparti parmi tous les modes susceptibles de se propager dans le voie directe (13).
BE0/213335A 1983-07-15 1984-07-13 Reseau de distribution local a acces multiples. BE900162A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US51430283A 1983-07-15 1983-07-15

Publications (1)

Publication Number Publication Date
BE900162A true BE900162A (fr) 1984-11-05

Family

ID=24046625

Family Applications (1)

Application Number Title Priority Date Filing Date
BE0/213335A BE900162A (fr) 1983-07-15 1984-07-13 Reseau de distribution local a acces multiples.

Country Status (6)

Country Link
JP (1) JPS6042715A (fr)
BE (1) BE900162A (fr)
DE (1) DE3425927A1 (fr)
FR (1) FR2549240A1 (fr)
GB (1) GB2143394B (fr)
NL (1) NL8402232A (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3689040T2 (de) * 1986-01-06 1994-04-14 American Telephone & Telegraph Faseroptisches Einzelmoden-Kommunikationssystem.
US4810052A (en) * 1986-01-07 1989-03-07 Litton Systems, Inc Fiber optic bidirectional data bus tap
US4828350A (en) * 1986-01-17 1989-05-09 The Board Of Trustees Of The Leland Stanford Junior University Fiber optic mode selector
US6151431A (en) * 1998-11-24 2000-11-21 Lucent Technologies Inc. Compact non-blocking non-dilated optical switch using mode conversion
AU2003231890A1 (en) * 2002-05-28 2003-12-12 Optun (Bvi) Ltd. Device and method of dynamic optical spot conversion
US7609918B2 (en) 2002-05-28 2009-10-27 Optun (Bvi) Ltd. Method and apparatus for optical mode division multiplexing and demultiplexing
US7424193B2 (en) 2004-07-14 2008-09-09 The Regents Of The University Of Michigan Composite waveguide
JP4571160B2 (ja) * 2007-02-27 2010-10-27 日本電信電話株式会社 伝搬モード選択器および光伝送システム

Also Published As

Publication number Publication date
JPS6042715A (ja) 1985-03-07
NL8402232A (nl) 1985-02-01
DE3425927A1 (de) 1985-01-24
GB2143394B (en) 1986-07-09
GB2143394A (en) 1985-02-06
GB8417523D0 (en) 1984-08-15
FR2549240A1 (fr) 1985-01-18

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Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: AMERICAN TELEPHONE AND TELEGRAPH CY

Effective date: 19860731