Linearized optical digital-to-analog modulator

CAFC
  • US 10,461,866 B2
  • Filed: 04/17/2019
  • Issued: 10/29/2019
  • Est. Priority Date: 06/13/2007
  • Status: Active Grant
First Claim
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1. A modulation system for modulating and transmitting an optical signal over at least one optical fiber in response to an input digital data word of N bits, the modulation system comprising:

  • an input enabled for receiving the digital data word into the modulation system;

    an electrically controllable modulator having one or more waveguide branches, where each branch receives an input of an unmodulated optical signal;

    a digital to digital converter enabled for converting the N bits of the input digital data word to a digital drive vector corresponding to M drive voltage values, where M>

    N and N>

    1;

    the electrically controllable modulator further enabled for coupling the drive voltage values corresponding to the digital drive vector to the unmodulated optical signal(s), said coupling enabling pulse modulation of the unmodulated optical signal(s), thereby generating pulse modulated optical signal(s), and outputting said pulse modulated optical signal(s) to one or more outputs;

    the one or more outputs enabled for transmitting the pulse modulated optical signal(s) over at least one optical fiber.

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