所属单位：电子信息工程学院

发表刊物：IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS

关键字：Microwave generation microwave photonics optical injection radar semiconductor laser dynamics

摘要：We propose and experimentally demonstrate an approach to generating reconfigurable radar waveforms based on an optically injected semiconductor laser. In the proposed system, the semiconductor laser is operated at period-one oscillation state, in which an optical output signal containing a microwave modulation on the intensity is generated. After photo detection, a frequency-tunable microwave signal is obtained with its instantaneous frequency determined by the optical injection strength and/or the detuning frequency between the master and slave lasers. Since the dynamical behavior of a semiconductor laser evolves at a subnanosecond time scale, by properly designing a control signal to manipulate the optical injection strength, reconfigurable microwave waveforms with desired parameters can be generated for radar and other applications. In particular, the generation of continuous-wave or pulsed, linearly chirped, and frequency-hopping microwave waveforms with reconfigurable parameters are experimentally demonstrated. In addition, a high-resolution distance measurement experiment is performed to verify the feasibility of applying the proposed microwave waveform generator to radar applications.

ISSN号：1077-260X

是否译文：否

发表时间：2017-11-01

合写作者：周沛,郭清水,李思敏,潘时龙

第一作者：张方正

通讯作者：张方正,张方正,潘时龙