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Phase-locked dual-polarization fiber lasers as compact optical-microwave sources

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Academic year: 2021

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Figure

Figure  1.  Optical  phase-locked  loop  (OPLL)  experimental  set-up.  DFFL:  dual-frequency  fiber  laser;  WDM,  pump-signal  coupler;  LO,  local  oscillator
Figure  4.  Locked  beat  note  at  1 GHz.  (a)  Electrical  spectrum.  (blue,  single  trace;  black  average 10) Span 1 kHz, RBW 1 Hz, VBW 10 Hz
Figure 6. Beat note spectrum at 10 GHz. (a) span  26 GHz,  RBW  3 MHz.  (c)  Span  1.6 MHz,  RBW  20 kHz
Figure  9.  Er:Yb-DFFL  beat  note  at  300 MHz.  (a)  Span  50 MHz,  RBW  3 MHz,  (b)  Pump-power  induced tuning

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