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Coupling sensor information to an optical cable using ultrasonic vibrations

  • US 10,598,969 B2
  • Filed: 06/27/2017
  • Issued: 03/24/2020
  • Est. Priority Date: 07/13/2016
  • Status: Active Grant
First Claim
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1. An apparatus, comprising:

  • an electronic circuit, configured to receive data to be transmitted over an optical cable, and to convert the data into a modulating signal;

    an electro-acoustic transducer, configured to convert the modulating signal into an acoustic wave; and

    a coupler, which is mechanically coupled to a section of the optical cable, and is configured to apply to the section a longitudinal strain that varies responsively to the acoustic wave, so as to modulate the data onto an optical carrier traversing the optical cable,wherein the electronic circuit is configured to generate the modulating signal by modulating the data onto a carrier, whose carrier frequency matches a resonance frequency of the electro-acoustic transducer.

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