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Digital optical transmitter

  • US 20030043438A1
  • Filed: 10/30/2002
  • Published: 03/06/2003
  • Est. Priority Date: 06/22/1998
  • Status: Active Grant
First Claim
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1. An optical transmitter, comprising:

  • an analog-to-digital (A/D) converter for converting an analog information signal to a digital information signal;

    a pilot tone generator for generating a digital pilot tone;

    a summer coupled to the A/D converter and the pilot tone generator for adding the digital pilot tone to the digital information signal to result in a summed signal; and

    a laser diode coupled to the summer for providing an optical signal in accordance with the summed signal.

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