Dong Jianji, Zhang Xinliang, Xu Jing, Huang Dexiu, Fu Songnian, Shum P
Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, China.
Opt Lett. 2007 May 15;32(10):1223-5. doi: 10.1364/ol.32.001223.
We propose a novel scheme to generate ultrawideband (UWB) monocycle pulses based on cross-phase modulation (XPM) of a semiconductor optical amplifier (SOA). The proposed system consists of a SOA and an optical bandpass filter (OBF). Due to the XPM, a continuous wave (CW) probe signal is phase modulated by another optical Gauss pulse in the SOA. The OBF will convert the phase modulation to intensity modulation. A pair of polarity-reversed UWB monocycle pulses is achieved by locating the probe carrier at the positive and negative linear slopes of the OBF. Both cases conform to the UWB definition of the Federal Communications Commission.
我们提出了一种基于半导体光放大器（SOA）的交叉相位调制（XPM）来产生超宽带（UWB）单周期脉冲的新颖方案。所提出的系统由一个SOA和一个光学带通滤波器（OBF）组成。由于XPM，连续波（CW）探测信号在SOA中被另一个光学高斯脉冲进行相位调制。OBF会将相位调制转换为强度调制。通过将探测载波置于OBF的正、负线性斜率处，可实现一对极性相反的UWB单周期脉冲。这两种情况均符合美国联邦通信委员会的UWB定义。
