应力对长周期光纤光栅特性的影响  

Effect of stress on the properties of long period fiber grating

作　　者：姜捷 李丽 孔瑜洁 李国玉[1] JIANG Jie;LI Li;KONG Yujie;LI Guoyu(Faculty of Information Engineering,Handan College,Handan Hebei 056005,China;Wuhan National Laboratory for Optoelectronics,Huazhong University of Science and Technology,Wuhan 430074,China)

机构地区：[1]邯郸学院信息工程学院,河北邯郸056005 [2]华中科技大学武汉光电国家实验室,武汉430074

出　　处：《光通信技术》2020年第11期11-14,共4页Optical Communication Technology

基　　金：河北省高等学校科学技术研究项目(QN2020533)资助;邯郸学院重点项目(2018105)资助。

摘　　要：长周期光纤光栅的刻写、使用都需要在一定的应力下进行,通过实验详细分析了应力对长周期光纤光栅刻写时、刻写后2个阶段谐振波中心波长、衰减深度等特性的影响。实验结果表明:应力对谐振波中心波长无影响,对谐振波衰减深度影响较大,并且对长周期光纤光栅不同阶段性能的影响不同。刻写时,40 g砝码提供的应力可以刻写出特性优良的长周期光纤光栅;刻写后,继续增加应力可以进一步提升长周期光纤光栅的性能。The long period fiber grating must be written and used under stress.In this paper,the effects of stress on the central wavelength and attenuation depth of resonance wave during and after writing of the long period fiber grating are analyzed in detail by experimental method.It is found in the experiment that the stress has no influence on the central wavelength of the resonant wave,but has a greater influence on the attenuation depth of the resonant wave,and the influence of the stress on the performance of the long period fiber grating at different stages is different.When writing,the stress provided by 40 g weights can be used to write long period fiber grating with good characteristics and the performance of the long period fiber grating can be further improved by increasing the stress after writing.

关 键 词：长周期光纤光栅 逐点写入法 应力 高频二氧化碳激光器 谐振波 

分 类 号：TN253[电子电信—物理电子学]