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1. WO2000043817 - OPTICAL WAVEGUIDES, OPTICAL CIRCUITS AND METHOD AND APPARATUS FOR PRODUCING OPTICAL WAVEGUIDES AND OPTICAL CIRCUITS

Publication Number WO/2000/043817
Publication Date 27.07.2000
International Application No. PCT/CA2000/000020
International Filing Date 11.01.2000
Chapter 2 Demand Filed 17.08.2000
IPC
G02B 6/12 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
10of the optical waveguide type
12of the integrated circuit kind
G02B 6/124 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
10of the optical waveguide type
12of the integrated circuit kind
122Basic optical elements, e.g. light-guiding paths
124Geodesic lenses or integrated gratings
CPC
G02B 2006/12107
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6Light guides
10of the optical waveguide type
12of the integrated circuit kind
12083Constructional arrangements
12107Grating
G02B 2006/12173
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6Light guides
10of the optical waveguide type
12of the integrated circuit kind
12166Manufacturing methods
12173Masking
G02B 6/02138
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6Light guides
02Optical fibre with cladding ; with or without a coating
02057comprising gratings
02076Refractive index modulation gratings, e.g. Bragg gratings
02123characterised by the method of manufacture of the grating
02133using beam interference
02138based on illuminating a phase mask
G02B 6/124
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6Light guides
10of the optical waveguide type
12of the integrated circuit kind
122Basic optical elements, e.g. light-guiding paths
124Geodesic lenses or integrated gratings
G02B 6/3608
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6Light guides
24Coupling light guides
36Mechanical coupling means
3608Fibre wiring boards, i.e. where fibres are embedded or attached in a pattern on or to a substrate, e.g. flexible sheets
Applicants
  • NU-WAVE PHOTONICS INC. [CA/CA]; 2305 St. Laurent Boulevard Ottawa, Ontario K1G 4J8, CA
Inventors
  • HATAMI-HANZA, Hamid; CA
Agents
  • SADIK, Achmed, N.; P.O. Box 908 Station "B" Ottawa, Ontario K1P 5P9, CA
Priority Data
2,259,35020.01.1999CA
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) OPTICAL WAVEGUIDES, OPTICAL CIRCUITS AND METHOD AND APPARATUS FOR PRODUCING OPTICAL WAVEGUIDES AND OPTICAL CIRCUITS
(FR) GUIDES D'ONDES OPTIQUES, CIRCUITS OPTIQUES ET PROCEDE ET APPAREIL DE FABRICATION DE GUIDES D'ONDES OPTIQUES ET DE CIRCUITS OPTIQUES
Abstract
(EN)
Optical circuits, in optical waveguide structures, are provided by making grating elements in patterns defined by perturbations of the refractive index of the waveguide material. An optical waveguide including ultraviolet (UV) photosensitive material is carried by a substrate to provide a waveguide assembly. The assembly is overlaid with a first mask being nontransparent to ultraviolet light and having a transparent aperture which defines an area of the optical waveguide for formation of an optical circuit. The first mask also includes registration targets. A grating mask with ports for passing ultraviolet light is removably clamped in a space registered relationship over the first mask, to provide a process assembly which is vibration tolerant. Exposing the grating mask to an ultraviolet radiation source, such as a UV lamp, forms the desired perturbations to affect the grating elements. The grating mask is removed and is reusable. As the location of each grating element is defined in relation to the registration targets, either the manufacturer or a user is at liberty to post-manufacture adjust the optical circuit using a narrow beam of ultraviolet light controlled to impinge upon one or more grating elements.
(FR)
On forme des circuits optiques dans des structures de guides d'ondes optiques, en produisant des éléments de grille dans des configurations définies par les perturbations de l'indice de réfraction du matériau du guide d'ondes. Un guide d'ondes optique comportant un matériau photosensible aux ultraviolets (UV) est placé en support sur un substrat, pour former un ensemble guide d'ondes. Cet ensemble est recouvert d'un premier masque qui n'est pas transparent à la lumière ultraviolette et qui présente une ouverture transparente définissant sur le guide d'ondes optique une zone de formation d'un circuit optique. Le premier masque comporte également des cibles d'alignement. Un masque de grille ayant une structure ajourée pour le passage de la lumière ultraviolette est fixé amovible en position alignée dans l'espace par rapport au premier masque, afin de former un ensemble de traitement tolérant les vibrations. L'exposition de ce masque de grille à une source de rayonnement ultraviolet, telle qu'une lampe à UV, forme les perturbations souhaitées qui vont influencer les éléments de grille. Le masque de grille est alors retiré et on peut le réutiliser. Dès lors que la position de chaque élément de grille est déterminée par rapport aux cibles d'alignement, le fabriquant ou l'utilisateur ont la liberté d'ajuster le circuit optique après fabrication, en utilisant un faisceau étroit de lumière ultraviolette dirigé sur un ou plusieurs de ces éléments de grille.
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