Fig. 3.9 Different variants of OEO structural diagrams: (a) with direct modulation of the laser
pumping current and with the external photodetector PD2; (b) with external electro-optical Mach–
Zehnder modulator with modulation of the laser emission in both MZ optical channels (OC1 and
OC2); (c) OEO structure without RF amplifier, but with optical amplifier OA2 mounted in the fiber
92 3 Modulation Methods of Laser Emission in Optoelectronic oscillator (OEO) and OEO. . .
pumping current and with the external photodetector PD2; (b) with external electro-optical Mach–
Zehnder modulator with modulation of the laser emission in both MZ optical channels (OC1 and
OC2); (c) OEO structure without RF amplifier, but with optical amplifier OA2 mounted in the fiber
92 3 Modulation Methods of Laser Emission in Optoelectronic oscillator (OEO) and OEO. . .