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type="text/css"></style> <div id="ct" class="ct2 wp cl"> <div class="mn"> <div class="bm_haa cl"> <div class="bm_h cl"> <a href="http://www.oecr.com/portal.php?mod=rss&catid=62" class="y xi2 rss" target="_blank" title="RSS">订阅</a><h1 class="xs2">文章</h1> </div></div> <div class="kjkjb"> <div class="bm vw" style="margin-bottom:0;"> <div class="h hm"> <div class="zxtoux"><img src="http://www.oecr.com/uc_server/avatar.php?uid=54876&size=small" /></div> <h1 class="ph">三种常见的均匀光纤光栅 </h1> <p class="xg1"> 时间：2021-11-3 09:36<a class="zz" href="home.php?mod=space&uid=54876">作者：update</a> 阅读<em id="_viewnum">(961)</em> 评论: <a href="http://www.oecr.com/portal.php?mod=comment&id=9331&idtype=aid" title="查看全部评论"><em id="_commentnum">5</em></a>来自: 网络平台</p> <div class="zxfb" ><a href="http://www.oecr.com/portal.php?mod=rss&catid=62" class="y xi2 rss" target="_blank" title="RSS">订阅</a></div> </div> <!--[diy=diysummarytop]--><div id="diysummarytop" class="area"></div><!--[/diy]--> <div class="s"> <div class="ss"><div><span>导读： </span>当纤芯空间周期和其折射率调制大小改变时，光纤的轴向不受影响的光栅称为均匀光纤光栅。</div> </div> <!--[diy=diysummarybottom]--><div id="diysummarybottom" class="area"></div><!--[/diy]--> <div class="d"> <!--[diy=diycontenttop]--><div id="diycontenttop" class="area"></div><!--[/diy]--> <table cellpadding="0" cellspacing="0" class="vwtb"><tr><td id="article_content"><div> 当纤芯空间周期和其折射率调制大小改变时，光纤的轴向不受影响的光栅称为均匀光纤光栅。</div><div><br></div><div> 常见的均匀光纤光栅主要有下列三种：</div><div><br></div><div> 光纤Bragg光栅（FiberBraggGating,FBG）</div><div><br></div><div> 其本质作用为反射型带通滤波器，入射光传输到FBG时，在纤芯传播方向相反的模式间发生传输耦合。FBG的折射率调制大小和纤芯空间周期均为常数，且折射率调制较小（通常仅0.1um量级），FBG的波矢方向与光纤纤芯的轴向保持一致。FBG主要被用于光纤类的<a href="http://laser.oecr.com" target="_blank" class="relatedlink">激光</a>器、<a href="http://sensor.oecr.com" target="_blank" class="relatedlink">传感</a>器和波分复用器中。</div><div><br></div><div> 长周期光纤光栅</div><div><br></div><div> 其本质作用为透射型带阻滤波器，主要是相同方向传递的纤芯模式和包层模式之间的传递耦合。顾名思义，它的折射变化周期较大（一般为100um量级）。在掺铒光纤放大器和光纤传感器中较为常见。</div><div><br></div><div> 倾斜光纤光栅</div><div><br></div><div> 其波矢方向和光纤轴向并不一致，而是会倾斜产生夹角，通过改变倾斜角度从而影响光纤光栅的折射率调制，达到增强传感性能的目的。此光纤光栅可以应用于光纤传感器、衰减光功率、放大器的增益平坦。</div><div><br></div><div><div 0px;"="" 255);"="" 255,="" rgb(255,="" simsun;="" yahei",="" microsoft="" style="overflow-wrap: normal; color: rgb(143, 143, 143); text-indent: 28px; font-family: 微软雅黑; background-color: rgb(255, 255, 255);"><span style="overflow-wrap: normal;">免责声明：编写或转载此文是为了传递更多的信息，为光电行业尽一些绵薄之力。若文字或图片侵犯了您的合法权益或有不当之处，请作者在20个工作日之内与我们联系，我们将协调给予处理。</span></div><div 0px;"="" 255);"="" 255,="" rgb(255,="" simsun;="" yahei",="" microsoft="" start;"="" normal;="" 400;="" 14px;="" style="overflow-wrap: normal; color: rgb(143, 143, 143); text-indent: 28px; font-family: 微软雅黑; background-color: rgb(255, 255, 255);"><br style="overflow-wrap: normal;"></div><div 0px;"="" 255);"="" 255,="" rgb(255,="" simsun;="" yahei",="" microsoft="" start;"="" normal;="" 400;="" 14px;="" style="overflow-wrap: normal; color: rgb(143, 143, 143); text-indent: 28px; font-family: 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