16-QAM optical signals generate

16-QAM optical signals generate

  • CN 103,155,505 B
  • Filed: 09/09/2011
  • Issued: 10/09/2018
  • Est. Priority Date: 09/09/2010
  • Status: Active Grant
First Claim
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1. a kind of light modulation device, including:

  • Parallel inphase/orthogonal modulator has the first signal branch and second signal branch, wherein the second signal branchThere is the phase difference of pi/2 with first signal branch, and the wherein described parallel inphase/orthogonal modulator is configured to by twoData-signal drives;

    Encoder device encodes described two data-signals by following manner:

    Rising edge is encoded to 01, failing edge is encoded to 10, high level is encoded to 11 andLow level is encoded to 00;

    AndIntensity modulator is configured to that signal is made to be bent in transit point, wherein the intensity modulator is driven by clock signal,The clock signal cuts the waveform after the intensity modulator, and the position cut is the rising edge of the waveformOr failing edge.

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