Traitement en cours

Veuillez attendre...

Paramétrages

Paramétrages

Aller à Demande

1. AU2002245235 - Tunable optical filter and method of filtering optical radiation

Office
Australie
Numéro de la demande 2002245235
Date de la demande 09.01.2002
Numéro de publication 2002245235
Date de publication 20.06.2002
Type de publication A
CIB
G02F 1/03
GPHYSIQUE
02OPTIQUE
FDISPOSITIFS OU SYSTÈMES DONT LE FONCTIONNEMENT OPTIQUE EST MODIFIÉ PAR CHANGEMENT DES PROPRIÉTÉS OPTIQUES DU MILIEU CONSTITUANT CES DISPOSITIFS OU SYSTÈMES ET DESTINÉS À LA COMMANDE DE L'INTENSITÉ, DE LA COULEUR, DE LA PHASE, DE LA POLARISATION OU DE LA DIRECTION DE LA LUMIÈRE, p.ex. COMMUTATION, OUVERTURE DE PORTE, MODULATION OU DÉMODULATION; TECHNIQUES NÉCESSAIRES AU FONCTIONNEMENT DE CES DISPOSITIFS OU SYSTÈMES; CHANGEMENT DE FRÉQUENCE; OPTIQUE NON LINÉAIRE; ÉLÉMENTS OPTIQUES LOGIQUES; CONVERTISSEURS OPTIQUES ANALOGIQUES/NUMÉRIQUES
1Dispositifs ou systèmes pour la commande de l'intensité, de la couleur, de la phase, de la polarisation ou de la direction de la lumière arrivant d'une source lumineuse indépendante, p.ex. commutation, ouverture de porte ou modulation; Optique non linéaire
01pour la commande de l'intensité, de la phase, de la polarisation ou de la couleur
03basés sur des céramiques ou des cristaux électro-optiques, p.ex. produisant un effet Pockels ou un effet Kerr
CPC
G02F 1/0311
GPHYSICS
02OPTICS
FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
1Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
01for the control of the intensity, phase, polarisation or colour 
03based on ceramics or electro-optical crystals, e.g. exhibiting Pockels effect or Kerr effect
0305Constructional arrangements
0311Structural association of optical elements, e.g. lenses, polarizers, phase plates, with the crystal
G02F 1/0338
GPHYSICS
02OPTICS
FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
1Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
01for the control of the intensity, phase, polarisation or colour 
03based on ceramics or electro-optical crystals, e.g. exhibiting Pockels effect or Kerr effect
0338structurally associated with a photoconductive layer or having photo-refractive properties
G02F 2201/305
GPHYSICS
02OPTICS
FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
2201Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
30grating
305diffraction grating
G02F 2201/307
GPHYSICS
02OPTICS
FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
2201Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
30grating
307Reflective grating, i.e. Bragg grating
G02F 2203/055
GPHYSICS
02OPTICS
FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
2203Function characteristic
05wavelength dependent
055wavelength filtering
Déposants STRATEGIC LIGHT, INC.
Inventeurs Petrov, Michael P.
Petrov, Victor M.
Shamrai, Alexander V.
Données relatives à la priorité 60/260,555 09.01.2001 US
Titre
(EN) Tunable optical filter and method of filtering optical radiation
Abrégé
(EN) The present invention provides a new method for spectral filtering of optical radiation wherein the light to be filtered is directed onto two or more spaced apart layers of photosensitive material (1). A holographic grating is recorded in the layers so that each layer of the photosensitive material contains a portion of the recorded holographic grating. The output optical signal (6) is formed as the result of interference of the light reflected due to the Bragg diffraction from the parts of the diffraction grating recorded in different layers. The reflected light propagates through the spaced apart electrooptical layers (2) sandwiched between the photosensitive layers (1). The refractive index of the electrooptical layers is varied by the application of the appropriate electrical field (Em) to provide the phase difference between the reflected optical signals in order to obtain the desired value of the total output signal resulted from the interference of the reflected light.
Documents de brevet associés