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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">怎么选择高品质光纤光缆 </h1> <p class="xg1"> 时间：2017-2-28 08:49<a class="zz" href="home.php?mod=space&uid=54876">作者：update</a> 阅读<em id="_viewnum">(833)</em> 评论: <a href="http://www.oecr.com/portal.php?mod=comment&id=5424&idtype=aid" title="查看全部评论"><em id="_commentnum">5</em></a></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>如何选择高品质光纤光缆？光缆光纤具有：抗电磁干扰强、信号衰减少、容量大、重量轻、体积小、传输距离远等优点。</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> 怎么选择高品质光纤光缆？光缆光纤具有：抗电磁干扰强、信号衰减少、容量大、重量轻、体积小、传输距离远等优点。</div><div><br></div><div><p style="text-align: center;"><a href="data/attachment/portal/201702/28/084805uooaklod7ltytkll.jpg" target="_blank"><img src="data/attachment/portal/201702/28/084805uooaklod7ltytkll.jpg"></a></p></div><div><br></div><div><font color="#f00000"><b> 光纤和光缆的区别</b></font></div><div><br></div><div> 光纤是一种传输光束的细而柔软的媒质。多数光纤在使用前必须由几层保护结构包覆，包覆后的缆线即被称为光缆。</div><div><br></div><div> 所以光纤是光缆的核心部分，光纤经过一些构件极其附属保护层的保护就构成了光缆。</div><div><br></div><div> 光纤外层的保护结构可以防止周遭环境对光纤的伤害。光缆包括光纤、缓冲层及披覆。</div><div><br></div><div> 光纤和同轴电缆相似，只是没有网状屏蔽层。中心是光传播的玻璃芯。光纤通常被扎成束，外面有外壳保护。</div><div><br></div><div> 纤芯通常是由石英玻璃制成的横截面积很小的双层同心圆柱体，它质地脆、易断裂，因此需要外加一保护层。所以它们的区别就在于此。</div><div><br></div><div><font color="#f00000"><b> 光缆的优点</b></font></div><div><br></div><div> 光纤光缆是新一代的传输介质，与铜质介质相比，光纤无论是在安全性、可靠性还是网络性能方面都有了很大的提高。</div><div><br></div><div> 光纤传输的带宽大大超出铜质线缆，而且支持的最大距离达两公里以上。光纤光缆具有抗电磁干扰性好、保密性强、速度快、传输容量大等优点。</div><div><br></div><div> 目前比较常见的有两种不同类型的光纤，分别是单模光纤和多模光纤。</div><div><br></div><div> 多模光纤一般被用于同一办公楼或距离相对较近的区域内的网络连接。而单模光纤传递数据的质量更高，传输距离更长，通常被用来连接办公楼之间或地理分散更广的网络。</div><div><br></div><div> 如果使用光纤光缆作为网络传输介质，还需增加光端收发器等设备。</div><div><br></div><div><font color="#f00000"><b> 怎么看光纤光缆品质</b></font></div><div><br></div><div> 根据<a href="http://material.oecr.com" target="_blank" class="relatedlink">材料</a>选择光缆光纤</div><div><br></div><div> 光缆使用的材料及生产<a href="http://optics.oecr.com" target="_blank" class="relatedlink">工艺</a>光缆材料选用是关系到光缆使用寿命的关键。而制造工艺是影响光缆质量的重要环节，工艺稳定、质量优良的<a href="http://b.oecr.com/sell" target="_blank" class="relatedlink">产品</a>在光缆生产的全过程中基本上未列入光纤附加损耗，≤0．01dB／km是衡量厂家光缆制造工艺水平的基本数据。</div><div><br></div><div> 光缆的主要用料有：纤芯、光纤油膏、护套材料、PBT（聚对笨二甲酸丁二醇酯），它们均有不同的质量要求，纤芯要求有较大的功充能力，较高的信噪比、较低比特误码率、较长放大器间距、较高的信息运载能力；</div><div><br></div><div> 光纤油膏是指在光纤束管中填充的油膏，其作用一是防止空气中的潮气侵蚀光纤，二是对光纤起衬垫作用，缓冲光纤受振动或冲击影响。</div><div><br></div><div> 根据芯数选择光缆光纤</div><div><br></div><div> 根据芯数选择不同型号的光缆的结构可分为中心束管式、层绞式、骨架式和带状式等几种，不同的用途结构又不相同，用户可以根据线路情况提出相应要求。</div><div><br></div><div> 一般12芯以下的采用中心束管式，中心束管式工艺简单成本低，在架空敷设或具备良好的管道保护的支干线网络中具有竞争力；</div><div><br></div><div> 层绞式光缆采用中心放置钢绞线或单根钢丝加强，采用SZ续合成缆，成缆纤数可达144芯。它的最大优点是防水，防强大拉力，强大側压力。</div><div><br></div><div> 可以用于直接埋地。同时易于分叉，即光缆部分光纤需分别使用时，不必将整个光缆开断，只需将需分叉的光纤开断即可，这对于数据通讯网络。</div><div><br></div><div> 有线电视网络沿途增设光节点是有利的；带状光缆的芯数可以做到上千芯，它是将4——12芯光纤排列成行，构成带状光纤单元，再将多个带状单元按一定方式排列成缆，我们网络级光缆一般选用束管式和层续式两种即可。</div><div><br></div><div> 根据用途选择光缆光纤</div><div><br></div><div> 按照用途选购相应的光缆根据用途的不同，光缆可分架空光缆、直埋光缆、管道光缆、海底光缆和无金属光缆等。</div><div><br></div><div> 架空光缆要求强度高、温差系数小；直埋式光缆要求抗埋、抗压、防潮、防湿度特性好、耐化学侵蚀；</div><div><br></div><div> 管道光缆和海底光缆则要耐水压、耐张力、防水特性好；无金属光缆可以和高压线一起架设，绝缘要好，虽然没有铁体加强芯，但也要有一定的抗拉能力。</div><div><br></div><div> 因此，在选购光缆时，用户要根据光缆的用途选择，并对厂家提出要求，确保光缆使用稳定、可靠。</div><div><br></div><div> 综上所述，选购光缆光纤远比同轴电缆要复杂得多，并不能简单的以几芯价格多少来比较衡量，而应根据光缆的结构形式、选用原材料、生产工艺及技术指标来综合考虑，我们不应该只是选用价格过于便宜的产品。因为要考虑的方面很多，不仅仅只是其使用寿命，更要整个工程性能上的标准。</div><div><br></div><div><p style="text-align: center;"><a href="data/attachment/portal/201702/28/084841x156s6uaacvusizu.jpg" target="_blank"><img src="data/attachment/portal/201702/28/084841x156s6uaacvusizu.jpg"></a></p><p style="text-align: center;"><br></p><p style="text-align: center;"><span style="line-height: 25.2px;">欢迎关注光电<a href="http://news.oecr.com" target="_blank" class="relatedlink">资讯</a>微信公众号，每天将由光电工程师<a href="http://club.oecr.com" target="_blank" class="relatedlink">社区</a>网站(oecr.com)编辑团队为您精选行业动态，科技资讯，技术解析，光电<a href="http://www.oecr.com/portal.php?mod=list&catid=62" target="_blank" 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