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1. WO1996003668 - MULTIPORT OPTICAL WAVEGUIDE INTERFEROMETER AND METHOD OF MAKING THE SAME

Publication Number WO/1996/003668
Publication Date 08.02.1996
International Application No. PCT/CA1995/000421
International Filing Date 17.07.1995
Chapter 2 Demand Filed 05.02.1996
IPC
G02B 6/28 2006.01
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
24Coupling light guides
26Optical coupling means
28having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
CPC
G02B 6/2835
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6Light guides
24Coupling light guides
26Optical coupling means
28having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
2804forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers
2821using lateral coupling between contiguous fibres to split or combine optical signals
2835formed or shaped by thermal treatment, e.g. couplers
G02B 6/2856
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6Light guides
24Coupling light guides
26Optical coupling means
28having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
2804forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers
2856formed or shaped by thermal heating means, e.g. splitting, branching and/or combining elements
Applicants
  • ALCATEL CANADA WIRE INC. [CA/CA]; 250 Ferrand Drive North York, Ontario M3C 3J4, CA (AllExceptUS)
  • GONTHIER, François [CA/CA]; CA (UsOnly)
  • LACROIX, Suzanne [CA/CA]; CA (UsOnly)
Inventors
  • GONTHIER, François; CA
  • LACROIX, Suzanne; CA
Agents
  • PRIMAK, George, J.; 13480 Huntington Pierrefonds, Quebec H8Z 1G2, CA
Priority Data
2,128,64522.07.1994CA
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) MULTIPORT OPTICAL WAVEGUIDE INTERFEROMETER AND METHOD OF MAKING THE SAME
(FR) INTERFEROMETRE EN GUIDE D'ONDES OPTIQUE A ACCES MULTIPLES ET SON PROCEDE DE FABRICATION
Abstract
(EN)
A multiport optical waveguide interferometer is provided which comprises at least two NxN couplers arranged in series on an array of fibers and separated by a short region such that the phase shift between the couplers is approximately equal to $g(p). A method for making such interferometer comprises forming such couplers, for instance by a fused taper method with appropriate twist, where the fused, tapered and twisted zone is longer than usual and wherein the couplers are formed in series within such zone, separated by short regions of between 1-2 mm, and adjusted to achieve the flattest possible wavelength response.
(FR)
L'invention concerne un interféromètre en guide d'ondes optique à accès multiples comprenant au moins deux coupleurs NxN placés en série sur un réseau de fibres et séparés par une région courte de sorte que le décalage de phase entre ces derniers soit approximativement égal à $g(p). L'invention porte également sur un procédé de fabrication dudit interféromètre qui consiste à former lesdits coupleurs, au moyen par exemple d'une technique de raccord progressif par alliage à torsade appropriée, la zone fusionnée, raccordée progressivement et torsadée étant plus longue qu'habituellement et les coupleurs étant formés en série dans ladite zone, et séparés par des régions courtes comprises entre 1 et 2 mm et conçues de sorte que la réponse de longueur d'onde soit la plus uniforme possible.
Also published as
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