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1. WO2000041016 - OPTICAL FIBER FILTERS AND METHOD OF MAKING THE SAME

Publication Number WO/2000/041016
Publication Date 13.07.2000
International Application No. PCT/CA2000/000012
International Filing Date 03.01.2000
Chapter 2 Demand Filed 06.09.2000
IPC
G02B 6/255 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
255Splicing of light guides, e.g. by fusion or bonding
G02B 6/34 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
34utilising prism or grating
CPC
G02B 6/02052
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6Light guides
02Optical fibre with cladding ; with or without a coating
02052comprising optical elements other than gratings, e.g. filters
G02B 6/2552
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6Light guides
24Coupling light guides
255Splicing of light guides, e.g. by fusion or bonding
2552reshaping or reforming of light guides for coupling using thermal heating, e.g. tapering, forming of a lens on light guide ends
G02B 6/29344
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
293with wavelength selective means
29344operating by modal interference or beating, i.e. of transverse modes, e.g. zero-gap directional coupler, MMI
Applicants
  • ITF OPTICAL TECHNOLOGIES INC.-Technologies Optiques ITF Inc. [CA/CA]; 45,rue Montpellier Ville St-Laurent, Quebec H4N 2G3, CA (AllExceptUS)
  • GONTHIER, François [CA/CA]; CA (UsOnly)
Inventors
  • GONTHIER, François; CA
Agents
  • PRIMAK, George, J.; 13480 Huntington Pierrefonds, Quebec H8Z 1G2, CA
Priority Data
2,258,14006.01.1999CA
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) OPTICAL FIBER FILTERS AND METHOD OF MAKING THE SAME
(FR) FILTRES POUR FIBRES OPTIQUES ET LEUR PROCEDE DE FABRICATION
Abstract
(EN)
An optical fiber filter is produced which has a sinusoidal response or a modulated sinusoidal response with any desired amplitude and wavelength period. This is achieved by first producing an elongated adiabatic taper in a single-mode fiber which has been stripped of its protective jacket. Then, on the slope of this adiabatic taper, at each end of the central zone, there is formed a non-adiabatic taper such as to obtain a predetermined sinusoidal or modulated sinusoidal response in the filter.
(FR)
L'invention porte sur la fabrication d'un filtre pour fibre optique à réponse sinusoïdale ou une réponse sinusoïdale modulée qui a une amplitude et une durée de longueur d'onde désirées. Pour cela, on crée d'abord un évasement adiabatique allongé dans une fibre monomode dont la gaine de protection a été retirée. Puis, sur la déclivité de cet évasement adiabatique, à chaque extrémité de la zone centrale, un évasement non adiabatique est formé de façon à obtenir une réponse sinusoïdale ou une réponse sinusoïdale modulée dans le filtre.
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