POLYMER-COATED HIGH-INDEX WAVEGUIDE FOR ACOUSTIC SENSING

An apparatus is provided including an acoustic sensor (50) having an optical waveguide (20). The optical waveguide (20) includes a waveguide core (202) having a waveguide core refractive index and a waveguide core photo-elastic coefficient, and an over-cladding layer (204) coupled to the waveguide c...

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Bibliographische Detailangaben
Hauptverfasser:	KUMAR RESMI RAVI, TSESSES SHAI, GRINBERG ASSAF, ROSENTHAL ALON
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	DIAGNOSIS HUMAN NECESSITIES HYGIENE IDENTIFICATION MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC ORINFRASONIC WAVES MEASURING MEDICAL OR VETERINARY SCIENCE OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PHYSICS SURGERY TESTING
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Beschreibung
Zusammenfassung:	An apparatus is provided including an acoustic sensor (50) having an optical waveguide (20). The optical waveguide (20) includes a waveguide core (202) having a waveguide core refractive index and a waveguide core photo-elastic coefficient, and an over-cladding layer (204) coupled to the waveguide core (202) and including an optically transparent polymer having an over-cladding refractive index and an over-cladding photo-elastic coefficient. The waveguide core refractive index is greater than the over-cladding refractive index, and the over-cladding photo-elastic coefficient is greater than the waveguide core photo-elastic coefficient. Other applications are also described. 提供了一种装置，包括具有光波导(20)的声学传感器(50)。光波导(20)包括具有波导芯折射率和波导芯光弹性系数的波导芯(202)和连接至波导芯(202)并且包括光学透明的聚合物的外包层(204)，该外包层具有外包层折射率和外包层光弹性系数。波导芯折射率大于外包层折射率，并且外包层光弹性系数大于波导芯光弹性系数。还描述了其他应用。