Broadband Frequency Swept Millimeter-Wave Source based on Cascaded Temporal Optical Pulse Shaping

被引：0
作者：
Ahmed, Eamonn J. [1 ]
Wang, Chao [1 ]
Stiens, Johan [2 ]
机构：
[1] Univ Kent, Sch Engn & Digital Arts, Canterbury CT2 7NT, Kent, England
[2] Vrije Univ Brussel, Dept Elect & Informat, B-1050 Brussels, Belgium
来源：
2015 INTERNATIONAL TOPICAL MEETING ON MICROWAVE PHOTONICS (MWP) | 2015年
关键词：
Chirped pulse; Mach-Zehnder modulator (MZM); microwave photonics; millimeter-wave; suppressed carrier modulation; temporal pulse shaping (TPS); MICROWAVE; GENERATION; FORMS;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A new approach to generate high-quality broadband frequency swept millimeter-wave (mm-wave) waveforms based on photonics-assisted frequency up conversion of a low-frequency chirped drive signal has been proposed. This is made possible by using an unbalanced temporal pulse shaping system involving two cascaded Mach-Zehnder modulators both biased at the minimum transmission points. The proposed approach is verified by simulations. A frequency swept mm-wave pulse with its instantaneous frequency spanning from 40 to 100 GHz and a chirp rate of 66.7 GHz/ns is generated thanks to 40 times frequency up conversion. Two-fold improvement on the time-bandwidth product of the generated waveform is also achieved thanks to the cascaded modulation scheme.
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页数：4
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