Chinese Journal of Lasers, Vol. 47, Issue 9, 0906002 (2020)
Optimization of RF Memory Techniques Using Optical Delay-Time Loops
Ding Zhidan1,2, Yang Fei1,*, Zhao Jiejun1,2, Wu Rui1,2, and Cai Haiwen1,2,**
- 1Key Laboratory of Space Laser Communication and Detection Technology, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
- 2University of Chinese Academy of Sciences, Beijing 100049, China
Optical delay-time loop-based radio frequency (RF) memory technology has received considerable attention in the field of electronic jamming owing to its broad instantaneous bandwidth and fast response time. To obtain a multipattern memory of complex RF pulse signals, different types of optical delay-time loop-based memory structures such as frequency shifting type, gated semiconductor optical amplifier (SOA) type, and cascade type have been successively realized. Through the comparison and optimization of delay-time loop-based structures, the storage schemes with high fidelity, high resolution, long delay and the reconfiguration of pulse width can be realized. More than 2000 pulse replications, storage with high resolution and time greater than 500 μs, and 200 ns--10 μs pulse-width reconstruction can be achieved in the cascaded structure, which can be applied in different application scenarios such as a wide range of pulse widths, complex modulation formats, and fast and long delay storage.
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