For generation of the optical launcher of the optical modulation for being transferred to remote receiver via optical fiber link

For generation of the optical launcher of the optical modulation for being transferred to remote receiver via optical fiber link

  • CN 101,277,154 B
  • Filed: 01/04/2008
  • Issued: 09/30/2015
  • Est. Priority Date: 03/28/2007
  • Status: Active Grant
First Claim
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1. , for generation of an optical launcher for the optical modulation for being transferred to remote receiver via optical fiber link, it comprises:

  • Laser, it is for generation of the base band optical signalling of the noise expansion comprised on frequency spectrum;

    Modulator, it is for modulating to produce the optical signalling containing modulation intelligence to described base band optical signalling with RF signal;

    Phase-modulator, its output being coupled to described modulator adjusts the described optical signalling containing modulation intelligence for the described optical signalling containing modulation intelligence of reception and the phase noise for being associated with described base band optical signalling by elimination, and produces the output optical signalling closed with described optical fiber link lotus root;

    AndPhase-correcting circuit, it is coupled between described laser and described phase-modulator, described phase-correcting circuit comprises the frequency discriminator with input and output, the described input coupling of described frequency discriminator is with the part receiving described base band optical signalling, and the described output of described frequency discriminator is coupled to photodiode to be eliminated to provide the feedforward of described phase noise in order to control described phase-modulator the phase noise be associated with described base band optical signalling to be converted to modulation signal.

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