Fig. 3.8 General view of experimental models of the low-noise laser optoelectronic oscillator of
the microwave range (on the left, the usual Russian coin). The average generation RF frequency is
8–10 GHz: OEO with the direct modulation (a), the photo-picture of OEO with external MZ
modulation (b). PS1 is the power supply 1, PS2 is the power supply 2, PS3 is the power supply 3
3.1 Direct and External Laser Modulation in OEO
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