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1. (WO2019049016) ULTRASOUND DETECTION BY OPTICAL PASSIVE-DEMODULATION INTERFEROMETRY USING PHOTONIC INTEGRATED CIRCUITS (PIC)
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Pub. No.: WO/2019/049016 International Application No.: PCT/IB2018/056704
Publication Date: 14.03.2019 International Filing Date: 03.09.2018
IPC:
G02F 1/11 (2006.01) ,G01B 9/02 (2006.01) ,A61B 8/00 (2006.01)
G PHYSICS
02
OPTICS
F
DEVICES 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
1
Devices 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
01
for the control of the intensity, phase, polarisation or colour
11
based on acousto-optical elements, e.g. using variable diffraction by sound or like mechanical waves
G PHYSICS
01
MEASURING; TESTING
B
MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
9
Instruments as specified in the subgroups and characterised by the use of optical measuring means
02
Interferometers
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
B
DIAGNOSIS; SURGERY; IDENTIFICATION
8
Diagnosis using ultrasonic, sonic or infrasonic waves
Applicants:
TECHNION RESEARCH & DEVELOPMENT FOUNDATION LTD. [IL/IL]; Technion Israel Institute of Technology Senate Building 32000 Haifa, IL
Inventors:
ROZENTAL, Amir; IL
HAZAN, Yoav; IL
Agent:
D. KLIGLER I. P. SERVICES LTD.; P.O. Box 57651 61576 Tel Aviv, IL
Priority Data:
62/555,06607.09.2017US
Title (EN) ULTRASOUND DETECTION BY OPTICAL PASSIVE-DEMODULATION INTERFEROMETRY USING PHOTONIC INTEGRATED CIRCUITS (PIC)
(FR) DÉTECTION D'ULTRASONS PAR INTERFÉROMÉTRIE OPTIQUE À DÉMODULATION PASSIVE À L'AIDE DE CIRCUITS PHOTONIQUES INTÉGRÉS (PIC)
Abstract:
(EN) An apparatus for optical detection of ultrasound includes one or more optical resonators (OR - 200), one or more optical passive-demodulation interferometers (OPDI - 22), and one or more respective electro-optical readout circuits (EORC - 24). The one or more optical resonators (OR) are configured to modulate respective carrier frequencies of optical signals indicative of US waves impinging thereon. The one or more OPDI are implemented in one or more photonic integrated circuits (PIC), wherein each OPDI is configured to demodulate the optical signal output by the respective OR, so as to generate a respective intensity-modulated optical signal. Each OPDI includes an interferometer (32) having imbalanced arms (323, 325) that are recombined using an optical hybrid (34). The one or more respective EORC are each configured to measure the intensity demodulated optical signal produced by the respective OPDI, and to output a respective electrical signal.
(FR) La présente invention concerne un appareil pour la détection optique d'ultrasons qui comprend un ou plusieurs résonateurs optiques (OR-200), un ou plusieurs interféromètres optiques à démodulation passive (OPDI-22), et un ou plusieurs circuits de lecture électro-optiques respectifs (EORC-24). Le ou les résonateurs optiques (OR) sont conçus pour moduler des fréquences porteuses respectives de signaux optiques indiquant la présence d'ondes ultrasonores incidentes sur ceux-ci. Le ou les OPDI sont implémentés dans un ou plusieurs circuits intégrés photoniques (PIC), chaque OPDI étant conçu pour démoduler le signal optique délivré par le résonateur optique respectif, de sorte à générer un signal optique modulé en intensité respectif. Chaque OPDI comprend un interféromètre (32) ayant des bras déséquilibrés (323, 325) qui sont recombinés à l'aide d'une jonction hybride optique (34). Le ou les EORC respectifs sont chacun conçus pour mesurer le signal optique démodulé en intensité produit par l'OPDI respectif, et pour délivrer un signal électrique respectif.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)