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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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载氢与光纤布喇格光栅
Abstract:
？系统地研究了载氢条件对掺锗石英光纤的紫外光敏特性以及光纤光栅的影响.结果表明:光纤中氢气含量的大小决定了光纤光栅的折射率调制(即光纤光敏性的大小),也决定了光纤光栅的反射率;随着载氢压力的增大,光纤的光致折射率改变(即紫外光敏性)呈正比例增大,两者之间的关系为△n=1.34×10-5+4.66×10-5p;退火后的光纤光栅的反射率与载氢压力的关系为r3=2.76881+0.83537p.这一结果有助于控制载氢压力获得发射率可调的光纤光栅,解决光纤光栅写入随机性大的问题;掺锗石英光纤的紫外光敏性的大小随着载氢时间的延长,呈指数增长,最后达到饱和;光纤光栅的反射率与载氢时间也呈现同样的规律,制作光纤光栅的最佳载氢时间为14d(常温).
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