Chang You Min, Lee Junsu, Lee Ju Han
School of Electrical and Computer Engineering, University of Seoul, Seoul, Republic of Korea.
Opt Express. 2010 Sep 13;18(19):20072-85. doi: 10.1364/OE.18.020072.
Proposed herein is an alternative photonic scheme for the generation of a doublet UWB pulse, which is based on the nonlinear polarization rotation of an elliptically polarized probe beam. The proposed scheme is a modified optical-fiber Kerr shutter that uses an elliptically polarized probe beam together with a linearly polarized control beam. Through theoretical analysis, it was shown that the optical-fiber-based Kerr shutter is capable of producing an ideal transfer function for the successful conversion of input Gaussian pulses into doublet pulses under special elliptical polarization states of the probe beam. An experimental verification was subsequently carried out to verify the working principle. Finally, the system performance of the generated UWB doublet pulses was assessed by propagating them over a 25-km-long standard single-mode fiber link, followed by wireless transmission. Error-free transmission was successfully achieved.
本文提出了一种用于产生双脉冲超宽带（UWB）脉冲的替代光子方案，该方案基于椭圆偏振探测光束的非线性偏振旋转。所提出的方案是一种改进的光纤克尔快门，它使用椭圆偏振探测光束和线偏振控制光束。通过理论分析表明，基于光纤的克尔快门能够在探测光束的特殊椭圆偏振状态下产生理想的传递函数，从而成功地将输入高斯脉冲转换为双脉冲。随后进行了实验验证以验证其工作原理。最后，通过在25公里长的标准单模光纤链路上传输并随后进行无线传输，对所产生的超宽带双脉冲的系统性能进行了评估。成功实现了无差错传输。
