Conclusion
To authors’ opinion, this book is the new theoretical contribution to investigations of
the optoelectronic oscillator with the fiber-optical delay line. The significance of new
theory of OEO is determined by the fact that together with many interesting reviews
of experimental researches of OEO, for example, prepared by P. Devgan [1], in
reviews and manifold papers and reports, extremely small attention is paid to
theoretical explanation of formation of small phasenoises in OEO. Methods and
the analysis of the amplitude and phase noise described in this book can be used to
many systems of the quantum electronics, which are intended for generation of RF
oscillations of microwave and mm-wave ranges, and which operation principle is
based on heterodyning of two spaced in frequency optical harmonics.
Owing to the new nontraditional approach both for radio engineering and for
optics and quantum electronics, authors could discover the main mechanisms of
amplitude and phase noise formation in the optoelectronic oscillator. For this, the
oscillator under investigation was considered as the unified device, in which two
oscillating processes in optical and radio-frequency ranges are developed on frequencies respectively about 129 THz and 10 GHz. The notation of the differential
equation system for the optical quantum oscillator (or the laser), which is spanned by
the positive feedback, permits to obtain in an explicit form the necessary functional
dependences of the power spectral density of the RF noise of OEO as a function of
the power spectral density of the spontaneous noise of the laser emission.
To our opinion, this book presents an interest not only as the description of
fundamentals of the optoelectronic theory. It contains the rich material on the
experimental investigations of OEO.
In Chap. 2 we performed a comparison of many types of RF oscillations sources
in microwave and mm-wave ranges with the ultralow phase noise level. We noted
that OEO takes the own definite place among known modern RF oscillators. At the
necessary choice of parameters of all OEO components, the OEO phase noise are
comparable with the phase noise of the least low-noise RF oscillator with the
© The Editor(s) (if applicable) and The Author(s), under exclusive license to
Springer Nature Switzerland AG 2020
A. A. Bortsov et al., Laser Optoelectronic Oscillators, Springer Series in Optical
Sciences 232, https://doi.org/10.1007/978-3-030-45700-6
507
To authors’ opinion, this book is the new theoretical contribution to investigations of
the optoelectronic oscillator with the fiber-optical delay line. The significance of new
theory of OEO is determined by the fact that together with many interesting reviews
of experimental researches of OEO, for example, prepared by P. Devgan [1], in
reviews and manifold papers and reports, extremely small attention is paid to
theoretical explanation of formation of small phasenoises in OEO. Methods and
the analysis of the amplitude and phase noise described in this book can be used to
many systems of the quantum electronics, which are intended for generation of RF
oscillations of microwave and mm-wave ranges, and which operation principle is
based on heterodyning of two spaced in frequency optical harmonics.
Owing to the new nontraditional approach both for radio engineering and for
optics and quantum electronics, authors could discover the main mechanisms of
amplitude and phase noise formation in the optoelectronic oscillator. For this, the
oscillator under investigation was considered as the unified device, in which two
oscillating processes in optical and radio-frequency ranges are developed on frequencies respectively about 129 THz and 10 GHz. The notation of the differential
equation system for the optical quantum oscillator (or the laser), which is spanned by
the positive feedback, permits to obtain in an explicit form the necessary functional
dependences of the power spectral density of the RF noise of OEO as a function of
the power spectral density of the spontaneous noise of the laser emission.
To our opinion, this book presents an interest not only as the description of
fundamentals of the optoelectronic theory. It contains the rich material on the
experimental investigations of OEO.
In Chap. 2 we performed a comparison of many types of RF oscillations sources
in microwave and mm-wave ranges with the ultralow phase noise level. We noted
that OEO takes the own definite place among known modern RF oscillators. At the
necessary choice of parameters of all OEO components, the OEO phase noise are
comparable with the phase noise of the least low-noise RF oscillator with the
© The Editor(s) (if applicable) and The Author(s), under exclusive license to
Springer Nature Switzerland AG 2020
A. A. Bortsov et al., Laser Optoelectronic Oscillators, Springer Series in Optical
Sciences 232, https://doi.org/10.1007/978-3-030-45700-6
507