所属单位：电子信息工程学院

发表刊物：2017 INTERNATIONAL TOPICAL MEETING ON MICROWAVE PHOTONICS (MWP)

关键字：Linear frequency modulation optoelectronic oscillator semiconductor laser

摘要：A photonic linear frequency-modulated (LFM) microwave waveform generator is proposed and demonstrated using a tunable optoelectronic oscillator (OEO) based on an optically injected semiconductor laser. Frequency tunability of the OEO is achieved by controlling optical injection strength. When the sweep period of output frequency matches with the cavity round-trip time, signal quality of generated LFM waveform is significantly improved by the high Q optoelectronic oscillation. In the experiment, LFM signal with a sweep range as large as 7 GHz, a tuning rate reaching 0.18 GHz/ns, and a time-bandwidth product (TBWP) up to 2804.2 is generated. A frequency comb contrast of 47 dB is also observed in the spectrum. Compared with other approaches, the proposed LFM waveform generator shows superiorities of large bandwidth, fast sweeping rate and high spectral purity.

是否译文：否

发表时间：2017-01-01

合写作者：周沛,Guo, Qingshui,潘时龙

第一作者：张方正

通讯作者：张方正,张方正,潘时龙