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M-ARY frequency presence modulation communication system and method

  • US 10,050,715 B1
  • Filed: 12/18/2017
  • Issued: 08/14/2018
  • Est. Priority Date: 12/18/2017
  • Status: Active Grant
First Claim
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1. An optical communication system, comprising:

  • a data transmitter including;

    at least one optical emission device configured to output light energy as an optical beam having an operating bandwidth;

    a beam dividing device arranged to receive and divide the operating bandwidth of the optical beam into bandwidth portions of plural communication bands;

    an array of graphene switches configured to;

    spectrally segregate a bandwidth portion of at least one communication band into plural channels by adjusting at least one graphene switch in the array, andmodulate the bandwidth portion to selectively produce an optical output signal with wavelengths that correspond to one or more of the channels, wherein a presence and absence of energy within channels of the communication band will constitute an information packet for data communication; and

    a focusing grating configured to receive and focus a first set of wavelengths of the optical output signal reflected by the array of graphene switches, wherein the first set of wavelengths is outputted to a telescope for transmission.

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