Phase and amplitude fluctuations of oscillationsin laser optoelectronic oscillator

Bortsov, A.A.

Автор: Bortsov Alexander A.
Журнал: Optical Engineering
Том: 63
Номер: 3
Год издания: 2024
Издательство: SPIE, the International Society for Optical Engineering
Местоположение издательства: Bellingham, WA, United States
Первая страница: 038106-1
Последняя страница: 038106-15
Номер статьи: 038106
Аннотация: Our work is devoted to the analysis of a power spectral density (PSD) of amplitudeand phase fluctuations of the laser and the laser optoelectronic oscillator (LOEO)with direct modulation. Using the control operator equation of the laser, the ampli-tude and phase fluctuations of the laser covered by positive optoelectronic feedbackwere analyzed for the two-level model. Systems of differential stochastic equationsof laser and LOEO are compiled, and analytical dependencies of spectral powerdensity of amplitude and phase fluctuations in approximation of small phase noiseare determined. The obtained design relationships were compared with experimen-tal PSD of amplitude and phase fluctuations of the laser and LOEO. Shown toachieve in LOEO, the PSD of phase fluctuations less than −140 dB∕Hz at the F ¼10 kHz offset 10 GHz radio frequency (RF) oscillation, it is necessary to use highlycoherent laser PSD phase fluctuations less than −100 dB∕Hz at the F ¼ 10 kHzoffset and achieve noise reduction by synchronizing the longitudinal laser modesby directly modulating the laser with a harmonic RF signal of LOEO generation.Our results make it possible to construct the theory of LOEO and the coupledLOEO based on a system of operator differential equations of a laser with fluctua-tions covered by a positive feedback circuit on the variable component of the pump-ing current. The content used in this document is only for preview purposes.© 2024 Society of Photo-Optical Instrumentation Engineers (SPIE) [DOI: 10.1117/1.OE.63.3.038106]Keywords: laser; optoelectronic oscillator; phase noise; power spectral density ofphase fluctuations; radiophotonicPaper 20230827G received Sep. 8, 2023; revised Jan. 24, 2024; accepted Feb. 28, 2024; published Mar.26, 2024.
Добавил в систему: Борцов Александр Анатольевич

	ИСТИНА	Войти в систему Регистрация
	ИСТИНА ИНХС РАН
	Главная Поиск Статистика О проекте Помощь

ИСТИНА

ИСТИНА ИНХС РАН

Phase and amplitude fluctuations of oscillationsin laser optoelectronic oscillatorстатья

Прикрепленные файлы