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力学写制多个π相移长周期光纤光栅的光学特性研究

Investigation on transmission spectra of mechanically-induced multiple π-phase-shifted LPFG

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【Author】 ZOU Jun1,ZHOU Xiao-jun1,2,SHI Sheng-hui1,ZHANG Zhi-yao1,2,LIU Yong1,2(1.School of Optoelectronic Information,University of Electronic Science and Technology of China,Chendu 610054,China;2.State Key Laboratory of Electronic Thin Films and Integrated Devices,University of Electronic Science and Technology of China,Chendu 610054,China)

【机构】电子科技大学光电信息学院；电子科技大学薄膜与集成器件国家重点实验室；

【摘要】利用两个相同且交替放置的周期性相移锯齿槽对单模光纤(SMF)施力,形成了基于机械微弯力学效应的多个π相移长周期光纤光栅(π-PS-LPFG)。实验研究了压力和π相移个数对光栅光谱的影响。结果表明,在1420～1440nm、1475～1500nm和1536～15709nm的波长范围内相移光栅光谱分别呈现出带通特性,阻带出现在通带两侧;相移光栅光谱的凹谷深度由压力确定,LP12模的最大损耗峰值可达-30dB;两损耗峰间的间距取决于π相移个数。本文方法操作简单,容易控制,使π-PS-LPFG的制作更加灵活。更多还原

【Abstract】 The mechanically-induced phase-shifted long period fiber grating(PS-LPFG) is formed by pressing a single mode fiber from double sides with two identical periodically phase-shifted grooved plates.The influence of pressure applied on the fiber and the number Nof the π phase-shifts on the transmission spectrum of the PS-LPFG is investigated experimentally.The results show that the depth of the notch of the PS-LPFG can be determined by adjusting the pressure,and a peak transmission loss of-30 dB for LP12 mode has been achieved.And the separation between the two loss-peaks depends on the number Nof the π phase-shifts.The proposed method is simple and easy to control,which makes the fabrication of PS-LPFGs more flexible.更多还原

【关键词】纤维光学；相移长周期光纤光栅(PS-LPFG)；力学微弯；周期性压力；
【Key words】 fiber optics； phase-shifted long period fiber grating(PS-LPFG)； mechanical micro-bending； periodical pressure；

【基金】国家自然科学基金资助项目(60736038,60925019);教育部新世纪优秀人才支持计划资助项目(NCET-07-0152)教育部新教师基金资助项目(200806141102);四川省青年科技基金资助项目(08ZQ026-012);

【文献出处】光电子.激光 ,Journal of Optoelectronics.Laser , 编辑部邮箱 ,2011年10期

【分类号】TN253
【被引频次】2
【下载频次】137

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