Diverse waveform generation using semiconductor lasers for radar and microwave applications
Diverse waveform generation using semiconductor lasers for radar and microwave applications
复制标题
DOI：
10.1109/jqe.2004.828254
复制
发表时间：
2004-06
影响因子：
2.5
通讯作者：
F. Lin;Jia-Ming Liu
中科院分区：
文献类型：
--
作者：
F. Lin;Jia-Ming Liu
从数值和实验两方面研究了利用半导体激光器方便地产生雷达和微波应用中的各种微波波形的可能性。这种波形是由半导体激光器在不同的扰动方案和不同的工作条件下的动态状态产生的。利用光注入技术，可以产生宽带混沌微波波形和宽频带可调谐窄带谐波微波。使用光电反馈方案，产生混沌脉冲、规则脉冲、锁频脉冲和准周期脉冲波形。这些光学产生的微波波形可以很容易地使用微波放大器和天线放大和辐射出去。功率谱，时间序列，和自相关轨迹的波形进行了研究。通过计算峰值旁瓣电平，定量地比较了这些波形的相关特性。实验证明了一种宽带混沌波形，具有干净的单尖峰/spl delta/-函数的相关轮廓，可用于雷达和其他需要明确的相关轮廓的应用。
The possibility of using semiconductor lasers to conveniently generate diverse microwave waveforms for radar and microwave applications is studied both numerically and experimentally. Such waveforms are generated from the dynamical states of semiconductor lasers in different perturbation schemes and varying operating conditions. Using an optical injection scheme, broad-band chaotic microwave waveforms and tunable narrow-band harmonic microwaves over a broad frequency range can be generated. Using an optoelectronic feedback scheme, chaotic pulsing, regular pulsing, frequency-locked pulsing, and quasi-periodic pulsing waveforms are generated. These optically generated microwave waveforms can be easily amplified and radiated out using microwave amplifiers and antennas. The power spectra, time series, and autocorrelation traces of such waveforms are studied. The peak-sidelobe level is calculated to quantitatively compare the correlation characteristics of these waveforms. A broad-band chaotic waveform with a clean single-spike /spl delta/-function-like correlation profile useful for radar and other applications that demand unambiguous correlation profile is demonstrated experimentally.