塑料光纤相位调制灵敏度的研究.doc

塑料光纤相位调制灵敏度的研究袁宇;章献民;陈抗生(浙江大学信息与电子工程学系,杭州 310027) 摘要： 研究了压电涂层PMMA纤芯塑料光纤中的相位调制.射频信号通过对光纤外层的压电涂层作用,使纤芯中产生应变,从而对光纤中的光信号进行相位调制.数值计算结果表明,与传统的石英光纤相比,PMMA塑料光纤的相位调制的灵敏度要高数十倍以上. 关键词： 相位调制 压电涂层 塑料光纤 相位调制灵敏度 Investigation of Phase Modulation Sensitivity in Plastic Optical Fiber(Department of Information and Electronic Engineering, Zhejiang University, Hangzhou 310027)(Department of Information and Electronic Engineering, Zhejiang University, Hangzhou 310027)Abstract: The phase modulation within piezoelectric coating PMMA core plastic optical fiber (POF) is demonstrated. RF signals induce strains within fiber core due to electric-mechanic effects in piezoelectric coating, thus the phase of optical signals in fiber is modulated. Compared with conventional glass fiber, PMMA core POF has a phase modulation sensitivity of more than ten times larger. Keywords: Phase modulation Piezoelectric coating Plastic fiber Phase modulation sensitivity 收稿日期2003-11-03修回日期1900-01-01网络版发布日期DOI: 基金项目: