At present, we cannot find a comparison of OEO technical characteristics with
other oscillators. In such an oscillator, the main advantages and shortcomings were
not analyzed in detail. The theoretical and experimental investigation of OEO with
the direct and external QWLD modulation was not yet performed taking laser noises
into consideration.
The above-mentioned allows formulation of this book purposes as follows.
The purposes of this book are:
• Familiarization of the worldwide scientific community with high-tech approach
for development of new sources of high-precision low-noise high-stable oscillations of the different physical nature.
• Examination of the new principle of ultralow-noise microwave and mm-wave
oscillations’ generation, which consists in application the self-modulation effect
of laser emission in the optoelectronic loop of the positive feedback.
• Description of fundamentals of the phase noise theory of the optoelectronic
oscillator based on the semiclassical laser model.
• Discussion of structures and technical characteristics of the experimental breadboard of the optoelectronic oscillator with the quantum-well laser diode as the
primary source of the high-coherent emission.
• Demonstration that among various OEO phase noise sources, the spontaneous
noise of laser emission is the determinative one for the level of the power spectral
density of the phase noise.
• Elaboration of recommendations for a choice of OEO element base of microwave
and mm-wave oscillations.
• Comparison of OEO various structures with direct and external modulation of
laser emission.
This book is organized as follows. After present Introduction, this book contains
seven Chapters.
Chapter 2 is devoted to reader introducing in the optoelectronic oscillator theme.
We discuss the operation principle of this comparably new and the source of
microwave and millimeter-wave precision oscillations, which is studied yet a little.
Features, advantages, and shortcomings of these oscillators are described for two
types of optical emission modulation: direct modulation and external modulation
with the special modulators. Possible applications of optoelectronic oscillators are
discussed in brief with an emphasis to complexities of analysis and design of such
systems.
Chapter 3 is devoted to an analysis of laser emission modulation methods and
formulation of mathematical model of the autonomous optoelectronic oscillator
(OEO) on the base of nonlinear differential equations. Sections of the Chap. 3
present two methods of laser emission modulation: the direct (internal) electrical
method and the external modulation through the electro-optical modulator offered by
Mach and Zehnder. Before beginning of material discussion, to explain a consequence and the logic of description, we briefly describe the structure of mathematical
6
1 Introduction
other oscillators. In such an oscillator, the main advantages and shortcomings were
not analyzed in detail. The theoretical and experimental investigation of OEO with
the direct and external QWLD modulation was not yet performed taking laser noises
into consideration.
The above-mentioned allows formulation of this book purposes as follows.
The purposes of this book are:
• Familiarization of the worldwide scientific community with high-tech approach
for development of new sources of high-precision low-noise high-stable oscillations of the different physical nature.
• Examination of the new principle of ultralow-noise microwave and mm-wave
oscillations’ generation, which consists in application the self-modulation effect
of laser emission in the optoelectronic loop of the positive feedback.
• Description of fundamentals of the phase noise theory of the optoelectronic
oscillator based on the semiclassical laser model.
• Discussion of structures and technical characteristics of the experimental breadboard of the optoelectronic oscillator with the quantum-well laser diode as the
primary source of the high-coherent emission.
• Demonstration that among various OEO phase noise sources, the spontaneous
noise of laser emission is the determinative one for the level of the power spectral
density of the phase noise.
• Elaboration of recommendations for a choice of OEO element base of microwave
and mm-wave oscillations.
• Comparison of OEO various structures with direct and external modulation of
laser emission.
This book is organized as follows. After present Introduction, this book contains
seven Chapters.
Chapter 2 is devoted to reader introducing in the optoelectronic oscillator theme.
We discuss the operation principle of this comparably new and the source of
microwave and millimeter-wave precision oscillations, which is studied yet a little.
Features, advantages, and shortcomings of these oscillators are described for two
types of optical emission modulation: direct modulation and external modulation
with the special modulators. Possible applications of optoelectronic oscillators are
discussed in brief with an emphasis to complexities of analysis and design of such
systems.
Chapter 3 is devoted to an analysis of laser emission modulation methods and
formulation of mathematical model of the autonomous optoelectronic oscillator
(OEO) on the base of nonlinear differential equations. Sections of the Chap. 3
present two methods of laser emission modulation: the direct (internal) electrical
method and the external modulation through the electro-optical modulator offered by
Mach and Zehnder. Before beginning of material discussion, to explain a consequence and the logic of description, we briefly describe the structure of mathematical
6
1 Introduction