Photonic generation multiband UWB impulse radio signal
Photonic generation multiband UWB impulse radio signal
复制标题
光子生成多频带 UWB 脉冲无线电信号
DOI：
10.1134/s0030400x13050068
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发表时间：
2013-05
影响因子：
0.6
通讯作者：
Wei, Zhihu
中科院分区：
文献类型：
--
作者：
Sun, Guodan;Wang, Rong;Pu, Tao;Wei, Zhihu
提出了一种基于不同权重和适当时延的多个双峰脉冲求和的光子生成多频带超宽带（MB-UWB）脉冲无线电信号的新方法。利用微波正弦信号对可调谐激光器进行调幅，得到多波长光源。然后，光信号通过高斯脉冲进行相位调制，并馈入一段单模光纤 (SMF)。 SMF作为相位调制到强度调制（PM-IM）转换来生成高斯双峰脉冲，并为不同权重的高斯双峰脉冲提供适当的时间延迟。实验获得了旁瓣抑制电平超过25 dB、中心频率为5～8 GHz、带宽为2.9～3.8 GHz 10 dB的MB-UWB脉冲。
A novel method to photonic generation multiband ultra-wide band (MB-UWB) impulse radio signal based on the summation of multiple doublet pulses with different weights and proper time delays is proposed. Microwave sinusoidal signal is used to amplitude modulate a tunable laser to get multi-wavelength source. The optical signal is then phase modulation with Gaussian pulse and fed into a section of single-mode fiber (SMF). The SMF services as phase modulation to intensity modulation (PM-IM) conversion to generate Gaussian doublet pulse, and offers proper time delays to Gaussian doublet pulses with different weights. MB-UWB pulses with sidelobe suppression levels over 25 dB, central frequency from 5 to 8 GHz, 10 dB bandwidth from 2.9 to 3.8 GHz are obtained in experiment.