range, which is developed and designed in hybrid implementation and realized
completely on the Russian element base.
In Sect. 8.5, we examine practical OEO devices of realized microwave and
mm-wave oscillators: in tuned low-noise oscillators; in radar stations and in radiooptical radars; in measuring devices for spectral density of the oscillator phase noise;
in lengthy fiber-optical lines for secretive communications with increased noise
immunity; in devices for formation of optical and electrical pulses with duration
less than 1 ps with the low jitter; in fiber-optical sensor of electrical voltage and
current; in lengthy radio communication links of the mm-wave range (60–80 GHz)
with the high speed of information transmission up to 10 GBt/s.
In the end of this chapter we give the main conclusions.
8.1 Characteristics of Modulated Emission Sources: The
Laser Diode and the Light-Emitting Diode
in the Microwave Range
An aim of experimental investigations of modulated emission sources included in
OEO, namely, laser diodes (LD) and light-emitting diodes (LED), is examination of
its main characteristics, dependences of their parameters upon the pumping current,
the research of the pumping current influence on the OEO frequency and amplitude
at the closed feedback loop. Examination of main LD and LED functions is
conducted on the general unified OEO breadboard, which block diagram is shown
in Fig. 8.1 (the breadboard content is explained in the below text and in the figure
caption). At first, experimental investigations are conducted at the open feedback
loop of OEO.
Experimental workbench for our OEO with RF FODL studying is created as the
some unified laboratory breadboard and contains:
• OEO with RF FODL with the exchangeable fiber-optical section (with the length
2–4600 m).
• The frequency discriminator (FDisc.).
• The optical tester OT-6 for measurement of the output emission power of light
sources.
• The sensor element (Sen).
• Power supply sources for an amplifier and light sources (PS-1 and PS-2).
• The spectrum analyzer С-4-27.
• The oscilloscope С-1-68 for generation signal observation.
• The voltmeter V-7-26.
• The frequency meter Ch-3-54 for generation frequency measurement in OEO
with RF FODL.
• The heating lamp and the temperature meter.
466
8 Experimental Investigations and Practical Circuits of Optoelectronic. . .
completely on the Russian element base.
In Sect. 8.5, we examine practical OEO devices of realized microwave and
mm-wave oscillators: in tuned low-noise oscillators; in radar stations and in radiooptical radars; in measuring devices for spectral density of the oscillator phase noise;
in lengthy fiber-optical lines for secretive communications with increased noise
immunity; in devices for formation of optical and electrical pulses with duration
less than 1 ps with the low jitter; in fiber-optical sensor of electrical voltage and
current; in lengthy radio communication links of the mm-wave range (60–80 GHz)
with the high speed of information transmission up to 10 GBt/s.
In the end of this chapter we give the main conclusions.
8.1 Characteristics of Modulated Emission Sources: The
Laser Diode and the Light-Emitting Diode
in the Microwave Range
An aim of experimental investigations of modulated emission sources included in
OEO, namely, laser diodes (LD) and light-emitting diodes (LED), is examination of
its main characteristics, dependences of their parameters upon the pumping current,
the research of the pumping current influence on the OEO frequency and amplitude
at the closed feedback loop. Examination of main LD and LED functions is
conducted on the general unified OEO breadboard, which block diagram is shown
in Fig. 8.1 (the breadboard content is explained in the below text and in the figure
caption). At first, experimental investigations are conducted at the open feedback
loop of OEO.
Experimental workbench for our OEO with RF FODL studying is created as the
some unified laboratory breadboard and contains:
• OEO with RF FODL with the exchangeable fiber-optical section (with the length
2–4600 m).
• The frequency discriminator (FDisc.).
• The optical tester OT-6 for measurement of the output emission power of light
sources.
• The sensor element (Sen).
• Power supply sources for an amplifier and light sources (PS-1 and PS-2).
• The spectrum analyzer С-4-27.
• The oscilloscope С-1-68 for generation signal observation.
• The voltmeter V-7-26.
• The frequency meter Ch-3-54 for generation frequency measurement in OEO
with RF FODL.
• The heating lamp and the temperature meter.
466
8 Experimental Investigations and Practical Circuits of Optoelectronic. . .