Linearized optical digital-to-analog modulator

CAFC
  • US 10,270,535 B1
  • Filed: 12/28/2018
  • Issued: 04/23/2019
  • Est. Priority Date: 06/13/2007
  • Status: Active Grant
First Claim
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1. A method of modulating and transmitting an optical signal over an optical fiber in response to N bits of digital data in parallel, the method comprising:

  • inputting the N bits of digital data into an optical modulator having a plurality of waveguide branches, where each branch has an input of an unmodulated optical signal;

    converting the N bits of digital data to M drive voltage values, where M>

    N and N>

    1;

    coupling the M drive voltage values to the unmodulated optical signal, said coupling enabling pulse modulation of the unmodulated optical signal, thereby generating a pulse modulated optical signal; and

    transmitting the pulse modulated optical signals over an optical fiber.

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