Single-loop space-time symmetric tunable optoelectronic oscillator based on SBS

• Main Authors: WANG YAO, ZHANG JIAHONG, DING QIHONG
• Format: Patent
• Language: Chinese; English
• Published: 13.10.2023
• Subjects: BASIC ELECTRIC ELEMENTS; DEVICES USING STIMULATED EMISSION; ELECTRICITY

The invention discloses an SBS-based single-loop space-time symmetric tunable optoelectronic oscillator, which comprises a laser used for generating optical carrier signals, an optical signal is coupled to a z-cut lithium niobate phase modulator through a polarization controller, the z-cut lithium niobate phase modulator outputs modulation signals in two modes, and the modulation signals are coupled to the laser through a polarization controller. A modulated optical signal and pump light are subjected to stimulated Brillouin scattering (SBS) in a high-nonlinearity optical fiber, a positive first-order sideband of the modulated signal is subjected to SBS gain amplification, and finally two paths of microwave signals subjected to photoelectric conversion in a photoelectric detector are combined into one path and then pass through an electric amplifier and a power divider, and a part of the two paths of microwave signals are connected into a phase modulator to form a closed loop. And one part is accessed to a sp