| 基于周期压力写入的长周期光纤光栅的一阶光学微分器 |
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| 引用本文： | 石胜辉,赵明富,罗彬彬,陈立功,周晓军.基于周期压力写入的长周期光纤光栅的一阶光学微分器[J].光电子．激光,2017(2):133-137. |
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| 作者姓名： | 石胜辉 赵明富 罗彬彬 陈立功 周晓军 |
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| 作者单位： | 重庆理工大学 光纤传感与光电检测重庆市重点实验室,重庆 410054 ;重庆理工大学 电气与电子工程学院,重庆 400054;重庆理工大学 光纤传感与光电检测重庆市重点实验室,重庆 410054 ;重庆理工大学 电气与电子工程学院,重庆 400054;重庆理工大学 光纤传感与光电检测重庆市重点实验室,重庆 410054 ;重庆理工大学 电气与电子工程学院,重庆 400054;重庆理工大学 光纤传感与光电检测重庆市重点实验室,重庆 410054 ;重庆理工大学 电气与电子工程学院,重庆 400054;电子科技大学 光电信息学院,四川 成都 610054 |
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| 基金项目： | 国家自然科学基金(51276209,61505017)、重庆市科委基础与前沿 研究(cstc2014jcyjA0081；cstc2015jcyjA40035)和重庆市教委科学技术研究(KJ1400942)资助项目 (1.重庆理工大学 光纤传感与光电检测重庆市重点实验室,重庆 410054； 2.重庆理工大学 电气与电子工程学院,重庆 400054； 3.电子科技大学 光电信息学院,四川 成都 610054) |
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| 摘 要： | 根据一阶光学微分器的传递函数,理论分析了均匀 长周期光纤光栅(LPFG)作为一阶瞬态光学微分器应满足的条件。周期压力产生的LPFG能够通 过压力的控制加强光栅的模式耦合,因而得到大的光栅谐 振损耗,实验证明了周期压力在细径光纤上产生的LPFG能够产生大于50dB的谐振损耗。数值模拟结果表明,此光栅光 学微分器能够高精度地完成对高斯脉冲的微分运算,在超快全光信号处理、飞秒脉冲整形和 任意光脉冲产生等领域中有宽广的应用前景。
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| 关 键 词： | 光纤光学 微分器 周期压力 长周期光纤光栅(LPFG) |
| 收稿时间： | 2016/4/26 0:00:00 |
A 1st-order optical differentiator based on periodical pressure-induced long-period fiber grating |
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| SHI Sheng-hui,ZHAO Ming-fu,LUO Bin-bi n,CHEN Li-gong and ZHOU Xiao-jun.A 1st-order optical differentiator based on periodical pressure-induced long-period fiber grating[J].Journal of Optoelectronics·laser,2017(2):133-137. |
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| Authors: | SHI Sheng-hui ZHAO Ming-fu LUO Bin-bi n CHEN Li-gong and ZHOU Xiao-jun |
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| Affiliation: | Chongqing Key Laboratory of Optical Fiber Sensor and Photodetector,Chongqing University of Technology,Chongqing 410054,China ;School of Electrical and Electronic Engineering,Chongqing University of Technology,Chongqing 400054,China;Chongqing Key Laboratory of Optical Fiber Sensor and Photodetector,Chongqing University of Technology,Chongqing 410054,China ;School of Electrical and Electronic Engineering,Chongqing University of Technology,Chongqing 400054,China;Chongqing Key Laboratory of Optical Fiber Sensor and Photodetector,Chongqing University of Technology,Chongqing 410054,China ;School of Electrical and Electronic Engineering,Chongqing University of Technology,Chongqing 400054,China;Chongqing Key Laboratory of Optical Fiber Sensor and Photodetector,Chongqing University of Technology,Chongqing 410054,China ;School of Electrical and Electronic Engineering,Chongqing University of Technology,Chongqing 400054,China;School of Opto-Electronic I nformation,University of Electronic Science and Technology of China,Chengdu 610054,China |
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| Abstract: | According to the transfer function of a fi rst-order differentiator,the condition of a uniform long period fiber grating(LPFG) as a first-order temporal optical differentiator is theoretically analyzed in this paper.The mode coupling in the periodical pressure-induced LPFG,which is formed by pressing a single mode fiber between a flat plate and a V-shaped periodically grooved plates,can be enhanced by controlling the periodical pressure applied o n the fiber,and then a large resonant loss of the LPFG can be obtained.The periodical pressure-induced LPFG in a small diameter fiber with the resonant loss larger than 50dB is experimentally demonstrated.The simulated results show that the grating is capable of completing differential operation for Gauss optical pulse with high precision.The periodical pressure-induced LPFG has potential applications in the fields of ultrafast all-optical signal processing,femtosecond optical pulse shaping,arbitrary optic al pulse generation,and so on. |
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| Keywords: | fiber optics differentiator periodical pressure long period fiber grating (LP FG) |
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