8.5 Practical Circuits of the Optoelectronic Oscillator
Implementation
8.5.1 Implementation of Tuned Low-Noise Oscillators
in the Microwave and mm-Wave Ranges
OEOs have a series of additional valuable properties for usual and optical radars: the
low losses, the low weight, relatively small dimensions (in some cases, they can be
done in the integral implementation), the high operation speed, a capability to the
remote control of its parameters, the absolute galvanic decoupling with the environment power engineering equipment, the high noise-immunity, and secrecy (electromagnetic compatibility).
In 2019, the commercial sample OE3700 from company OE Waves of the
oscillator on the base of OEO with the Mach–Zehnder modulator has the following
characteristics: OE3700 specifications: the frequency 10 GHz (Other frequencies
available), the RF Output Power + 10 dBm, the Phase Noise À140 dBc/Hz at
10 kHz, Harmonics À40 dBc. [Product Brief. Compact Opto-Electronic Oscillator
(OEO). Low Phase Noise Microwave Signal Source Module—Oewaves (www.
oewaves.com)].
In spatially spaced and inter-connected coherent usual (RF) and optical radars
including Doppler ones, such OEO may be the main functional units of the frequency synthesizers for transmitters and receivers, spatially distributed systems of
the remote ultra-noise-immunity synchronization and PLL systems, circuits for
frequency stability transfer, transmission sections of the reference, phase-precision
oscillations for optical and microwave quantum frequency standards, network nodes
for signal layout in active phased antenna arrays.
From the point of view of OEO application as the master reference oscillators of
receiving-transmitting devices of the real radar stations of microwave and mm-wave
ranges, the extreme interest is caused by utilization of the energy pumping from
QWLDs.
8.5.2 OEO in Microwave and mm-Wave Ranges in RF
and Optical Radars of On-Board and Ground-Based
Stations
Let us consider the prospects of OEO utilization in RF and optical radars.
The radio-optical OEO built with the account of above-listed approaches, have a
series of additional valuable properties for RF radars and radio-optical radar (ROR):
low losses, the low weight and comparably small dimensions, high operation speed,
a capability to the remote control by its parameters, the absolute galvanic decoupling
8.5 Practical Circuits of the Optoelectronic Oscillator Implementation
491
Implementation
8.5.1 Implementation of Tuned Low-Noise Oscillators
in the Microwave and mm-Wave Ranges
OEOs have a series of additional valuable properties for usual and optical radars: the
low losses, the low weight, relatively small dimensions (in some cases, they can be
done in the integral implementation), the high operation speed, a capability to the
remote control of its parameters, the absolute galvanic decoupling with the environment power engineering equipment, the high noise-immunity, and secrecy (electromagnetic compatibility).
In 2019, the commercial sample OE3700 from company OE Waves of the
oscillator on the base of OEO with the Mach–Zehnder modulator has the following
characteristics: OE3700 specifications: the frequency 10 GHz (Other frequencies
available), the RF Output Power + 10 dBm, the Phase Noise À140 dBc/Hz at
10 kHz, Harmonics À40 dBc. [Product Brief. Compact Opto-Electronic Oscillator
(OEO). Low Phase Noise Microwave Signal Source Module—Oewaves (www.
oewaves.com)].
In spatially spaced and inter-connected coherent usual (RF) and optical radars
including Doppler ones, such OEO may be the main functional units of the frequency synthesizers for transmitters and receivers, spatially distributed systems of
the remote ultra-noise-immunity synchronization and PLL systems, circuits for
frequency stability transfer, transmission sections of the reference, phase-precision
oscillations for optical and microwave quantum frequency standards, network nodes
for signal layout in active phased antenna arrays.
From the point of view of OEO application as the master reference oscillators of
receiving-transmitting devices of the real radar stations of microwave and mm-wave
ranges, the extreme interest is caused by utilization of the energy pumping from
QWLDs.
8.5.2 OEO in Microwave and mm-Wave Ranges in RF
and Optical Radars of On-Board and Ground-Based
Stations
Let us consider the prospects of OEO utilization in RF and optical radars.
The radio-optical OEO built with the account of above-listed approaches, have a
series of additional valuable properties for RF radars and radio-optical radar (ROR):
low losses, the low weight and comparably small dimensions, high operation speed,
a capability to the remote control by its parameters, the absolute galvanic decoupling
8.5 Practical Circuits of the Optoelectronic Oscillator Implementation
491