A simple and flexible photonic scheme for the generation of ultrawideband (UWB) pulse shape modulation based on dual-filter tuning is proposed and experimentally demonstrated. By launching a Gaussian signal into a phase modulator, the UWB polarity-switchable monocycle is generated at the output of two optical bandpass filters by adjusting the central wavelengths of the dual-filter appropriately. The doublet pulses with inverted polarities are obtained by combining the pair of UWB monocycle pulses under proper time delay. Meanwhile, with a predefined code pattern and controlling the optical path difference of the two monocycle pulses, the pulse shape modulation can be performed.
© 2013 Optical Society of AmericaFull Article | PDF Article
Jian Wang, Qizhen Sun, Junqiang Sun, and Weiwei Zhang
Opt. Express 17(5) 3521-3530 (2009)
Shiguang Wang, Hongwei Chen, Ming Xin, Minghua Chen, and Shizhong Xie
Opt. Lett. 34(20) 3092-3094 (2009)
Xinhuan Feng, Zhaohui Li, Bai-Ou Guan, C. Lu, H. Y. Tam, and P. K. A. Wai
Opt. Express 18(4) 3643-3648 (2010)