An Optical Microwave Generator based on Stimulated Brillouin Scattering with Fine Tunability

Yan, Juanjuan; Liang, Aihu; Xin, Fengdan; Liu, Qidi

doi:10.1364/cleo_at.2018.jw2a.181

Cited by 4 publications

(1 citation statement)

References 7 publications

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“…Opto-electronic oscillator (OEO) has attracted great interest for decades [35][36][37] to replace the conventional RF signal generator for applications that have precise timing requirement due to the OEO's high stability and low phase noise performance over a wide frequency bandwidth. OEO usually consists of a laser source, an electro-optic modulator, a section of optical fiber, a photodetector, an electrical amplifier, a microwave bandpass filter, and an electrical power coupler, such that the RF signal is repeatedly selected by an electrical bandpass filter and amplified to ensure gain is larger than the loss in the OEO cavity to achieve a high-Q factor.…”

Section: Microwave Photonic Opto-electronic Oscillator Enabled Frequementioning

confidence: 99%

Ultrafast and Wideband Microwave Photonic Frequency-Hopping Systems: A Review

Liu

Fok

2020

Applied Sciences

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The increasing demands to enhance information security in data transmission, providing countermeasures against jamming in military applications, as well as boosting data capacity in mobile and satellite communication, have led to a critical need for high-speed frequency-hopping systems. Conventional electronics-based frequency-hopping systems suffer from low data rate, low hopping speed, and narrow hopping-frequency bandwidth. Unfortunately, those are important aspects to facilitate frequency-hopping in emerging microwave systems. The recent advancement of microwave photonics—the use of light to process microwave signals—provides promising solutions to tackle the challenges faced by electronic frequency-hopping systems. In this paper, the challenges of achieving real-time frequency-hopping systems are examined. The operation principles and results of various microwave photonics-enabled frequency-hopping systems are comprehensively discussed, which have wide hopping-frequency bandwidth and frequency-hopping speed from nanoseconds to tens of picoseconds. Lastly, a bio-inspired jamming-avoidance system that could potentially be used for adaptive frequency-hopping is also introduced.

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Section: Microwave Photonic Opto-electronic Oscillator Enabled Frequementioning

confidence: 99%