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Method and apparatus for encoding optical power and non-payload data in an optical signal

  • US 7,346,284 B2
  • Filed: 12/19/2006
  • Issued: 03/18/2008
  • Est. Priority Date: 12/29/1999
  • Status: Expired due to Fees
First Claim
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1. A method of extracting non-payload data from an optical signal carrying both payload data and said non-payload data, said optical signal modulated with a dither modulating signal, said dither modulating signal being modulated by a binary phase shift keyed signal carrying said non-payload data, the method comprising:

  • a) producing an electrical representation of said optical signal;

    b) demodulating said electrical representation to extract said binary phase shift keyed signal; and

    c) demodulating said binary phase shift keyed signal to obtain said non-payload data.

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