gyb 发表于 2007-2-5 04:50:00

[转帖]光纤传感器中激光光源

<span style="COLOR: #333333; FONT-FAMILY: 宋体; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman;"><pre><span class="px141"><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: ˎ̥; mso-hansi-font-family: ˎ̥;"><pre><font color="#000000"><span class="px141"><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: ˎ̥; mso-hansi-font-family: ˎ̥;">光纤激光器</span></span><span class="px141"><span style="FONT-SIZE: 10.5pt;">
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                                                        <span class="px141"><font color="#000000"></font></span></span><font color="#000000"><span class="px141"><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: ˎ̥; mso-hansi-font-family: ˎ̥;">光纤激光器实际上也属于固体激光器，只是将激光物质换为了</span></span><span class="px141"><span lang="EN-US" style="FONT-SIZE: 10.5pt;"><a href="http://info.ceramic.hc360.com/list/ztxitu.shtml" target="_blank"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: ˎ̥; mso-hansi-font-family: ˎ̥;">稀土</span></a></span></span><span class="px141"><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: ˎ̥; mso-hansi-font-family: ˎ̥;">离子掺杂光纤，根据掺杂离子的不同以及两端起反射镜功能机理的不同可以分为掺稀土光纤激光器、光纤光栅激光器、线性效应光纤激光器、单晶光纤激光器、塑料光气激光器、光孤子激光器等。</span></span><span class="px141"><span style="FONT-SIZE: 10.5pt;">
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                                                        <span class="px141"><font color="#000000"></font></span></span><font color="#000000"><span class="px141"><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: ˎ̥; mso-hansi-font-family: ˎ̥;">光纤激光器主要优点在于容易使低泵浦实现连续工作；其阈值低，增益高，热效应低；利用定向耦合和</span></span><span class="px141"><span lang="EN-US" style="FONT-SIZE: 10.5pt;">Bragg</span></span><span class="px141"><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: ˎ̥; mso-hansi-font-family: ˎ̥;">反射，可</span></span><span class="px141"><span lang="EN-US" style="FONT-SIZE: 10.5pt;"><a href="http://info.broadcast.hc360.com/html/cpzt_bk.htm" target="_blank"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: ˎ̥; mso-hansi-font-family: ˎ̥;">制作</span></a></span></span><span class="px141"><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: ˎ̥; mso-hansi-font-family: ˎ̥;">窄线宽、可调谐光纤激光器；能很好地与光纤耦合，与现有的光纤器件完全兼容，能进行全光纤测试，可传输系统光源，这在任何光系统、光器件的设计中都是及其珍贵也及其重要的。因此，光纤激光器在下一代的光纤传感器中的应用具有非常好的前景。特别是用作光纤时域</span></span><span class="px141"><span lang="EN-US" style="FONT-SIZE: 10.5pt;"><a href="http://info.broadcast.hc360.com/html/cpzt_fs.htm" target="_blank"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: ˎ̥; mso-hansi-font-family: ˎ̥;">发射</span></a></span></span><span class="px141"><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: ˎ̥; mso-hansi-font-family: ˎ̥;">（</span></span><span class="px141"><span lang="EN-US" style="FONT-SIZE: 10.5pt;">OTDR</span></span><span class="px141"><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-ascii-font-family: ˎ̥; mso-hansi-font-family: ˎ̥;">）测量的强光源以及光纤陀螺的宽带发射源。</span></span><span lang="EN-US" style="FONT-SIZE: 10.5pt;"><p></p></span></font></pre></span></span></pre></span>

roy_lz 发表于 2007-2-9 00:51:00

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