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1. WO2020110789 - GRATING COUPLER AND INTEGRATED GRATING COUPLER SYSTEM

Publication Number WO/2020/110789
Publication Date 04.06.2020
International Application No. PCT/JP2019/044984
International Filing Date 12.11.2019
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
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
H01S 5/02 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
SDEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
5Semiconductor lasers
02Structural details or components not essential to laser action
CPC
G02B 2006/12038
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6Light guides
10of the optical waveguide type
12of the integrated circuit kind
12035Materials
12038Glass (SiO2 based materials)
G02B 2006/12061
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6Light guides
10of the optical waveguide type
12of the integrated circuit kind
12035Materials
12061Silicon
G02B 2006/12078
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6Light guides
10of the optical waveguide type
12of the integrated circuit kind
12035Materials
12078Gallium arsenide or alloys (GaAs, GaAlAs, GaAsP, GaInAs)
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 2006/12121
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6Light guides
10of the optical waveguide type
12of the integrated circuit kind
12083Constructional arrangements
12121Laser
G02B 2006/12128
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6Light guides
10of the optical waveguide type
12of the integrated circuit kind
12083Constructional arrangements
12128Multiple Quantum Well [MQW]
Applicants
  • MITSUBISHI ELECTRIC CORPORATION [JP]/[JP]
Inventors
  • KOJIMA, Keisuke
  • GOTODA, Mitsunobu
  • AKINO, Toshiaki
  • TAHERSIMA, Mohammad
Agents
  • SOGA, Michiharu
Priority Data
16/260,74729.01.2019US
62/773,72130.11.2018US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) GRATING COUPLER AND INTEGRATED GRATING COUPLER SYSTEM
(FR) COUPLEUR DE RÉSEAU ET SYSTÈME DE COUPLEUR DE RÉSEAU INTÉGRÉ
Abstract
(EN)
A grating coupler having first and second ends for coupling a light beam to a waveguide of a chip includes a substrate configured to receive the light beam from the first end and transmit the light beam through the second end, the substrate having a first refractive index nl, a grating structure having grating lines arranged on the substrate, the grating structure having a second refractive index nl, wherein the grating lines have line width w and height d and are arranged by a pitch Lambda, wherein the second refractive index n2 is less than first refractive index nl, and a cladding layer configured to cover the grating structure, wherein the cladding layer has a third refractive index n3, wherein the cladding layer is arranged to reflect the light beam diffracted from the grating structure toward below the cladding layer.
(FR)
La présente invention concerne un coupleur de réseau ayant des première et seconde extrémités pour coupler un faisceau de lumière à un guide d'ondes d'une puce. Le coupleur de réseau comprend un substrat configuré pour recevoir le faisceau de lumière à partir de la première extrémité et transmettre le faisceau de lumière à travers la seconde extrémité, le substrat ayant un premier indice de réfraction n1, une structure de réseau ayant des lignes de réseau disposées sur le substrat, la structure de réseau ayant un second indice de réfraction n1, les lignes de réseau ayant une largeur de ligne w et une hauteur d et étant agencées par un pas lambda, le second indice de réfraction n2 étant inférieur au premier indice de réfraction n1, et une couche de bardage configurée pour recouvrir la structure de réseau, la couche de bardage ayant un troisième indice de réfraction n3, la couche de bardage étant agencée pour réfléchir le faisceau lumineux diffracté à partir de la structure de réseau vers le dessous de la couche de bardage.
Also published as
Latest bibliographic data on file with the International Bureau