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Method and circuit for encoding multi-level pulse amplitude modulated signals using integrated optoelectronic devices

  • US 8,238,014 B2
  • Filed: 09/08/2009
  • Issued: 08/07/2012
  • Est. Priority Date: 09/08/2008
  • Status: Active Grant
First Claim
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1. A method for processing signals, the method comprising:

  • generating a multi-level, amplitude-modulated optical signal utilizing an optical modulator driven by two or more of a plurality of electrical input signals, wherein;

    said optical modulator comprises a plurality of optical modulator elements coupled in series and configured into a plurality of groups;

    a number of said optical modular elements and a number of said plurality of groups configure a number of levels in said multi-level amplitude modulated optical signal;

    unit drivers are coupled to each of said plurality of groups of said optical modulator elements; and

    said plurality of electrical input signals are synchronized utilizing flip-flops before being communicated to said unit drivers.

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