Affiliation of Author(s):电子信息工程学院
Journal:IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS
Key Words:Microwave generation microwave photonics optical injection radar semiconductor laser dynamics
Abstract: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 No.:1077-260X
Translation or Not:no
Date of Publication:2017-11-01
Co-author:周沛,郭清水,LI SIMIN,Shilong PAN
Correspondence Author:张方正,潘时龙,zfz
Date of Publication:2017-11-01