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公开(公告)号：US09638591B1
公开(公告)日：2017-05-02
申请号：US13902726
申请日：2013-05-24
Applicant: Apple Inc.
Inventor： Sam R. Sarcia
Abstract: An electronic device includes an input surface area for receiving a force applied by a user and one or more optical waveguides that include Bragg gratings. The optical waveguide or waveguides is operatively affixed to the input surface area. At least one light source is optically coupled to the optical waveguide or waveguides. At least one wavelength interrogator is coupled to the optical waveguide or waveguides.
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