The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 23, 2022
Filed:
Sep. 03, 2018
Technion Research & Development Foundation Ltd., Haifa, IL;
Amir Rozental, Haifa, IL;
Yoav Hazan, Haifa, IL;
TECHNION RESEARCH & DEVELOPMENT FOUNDATION LTD., Haifa, IL;
Abstract
An apparatus for optical detection of ultrasound includes one or more optical resonators (OR—), one or more optical passive-demodulation interferometers (OPDI—), and one or more respective electro-optical readout circuits (EORC—). 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 () having imbalanced arms () that are recombined using an optical hybrid (). 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.