【科普知识】光通信相关基础介绍
<section style="box-sizing: border-box; background-color: rgb(255, 255, 255);"><section class="Powered-by-XIUMI V5" style=" box-sizing: border-box; " powered-by="xiumi.us"><section class="" style=" margin-top: 10px; margin-bottom: 10px;box-sizing: border-box; "><section class="" style="width: 100%; box-sizing: border-box;"><section class="" style="float: left; padding-right: 3px; line-height: 1; box-sizing: border-box;"><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style=" box-sizing: border-box; "><section class="" style="font-size: 44.8px; color: rgb(95, 156, 239); box-sizing: border-box;"><p style="box-sizing: border-box;">光</p></section></section></section></section><section class="" style="clear: right; box-sizing: border-box; min-height: 4.5em !important;"><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style=" box-sizing: border-box; "><section class="" style="box-sizing: border-box;"><p style="clear: none; box-sizing: border-box;"><span style="color: rgb(95, 156, 239); box-sizing: border-box;">模块</span>市面上分类较多</p><p style="clear: none; box-sizing: border-box;"><span style="font-size: 16px; line-height: 1.6;"><br></span></p><p style="clear: none; box-sizing: border-box;"><span style="font-size: 16px; line-height: 1.6;">按封装类型份额由：1*9、GBIC、SFF、SFP、XFP、SFP+、QSFP+等</span></p><p style="clear: none; box-sizing: border-box;"><span style="font-size: 16px; line-height: 1.6;">按速率分类有：155M、622M、1.25G、2.5G、4.25G、10G、40G等</span></p><p style="clear: none; box-sizing: border-box;"><span style="font-size: 16px; line-height: 1.6;">按波长分类有：常规波长（850nm、1310nm、1550nm...）、CWDM、DWDM等</span></p><p style="clear: none; box-sizing: border-box;"><span style="font-size: 16px; line-height: 1.6;">按模式分类有：单模、多模</span></p></section></section></section></section></section></section></section><section class="Powered-by-XIUMI V5" style=" box-sizing: border-box; " powered-by="xiumi.us"><section class="" style=" margin-top: 10px; margin-bottom: 10px;box-sizing: border-box; "><section class="" style="border-top-width: 1px; border-top-style: solid; border-top-color: rgb(95, 156, 239); box-sizing: border-box;"></section><section class="" style="margin-top: 3px; border-top-width: 4px; border-top-style: solid; border-top-color: rgb(95, 156, 239); box-sizing: border-box;"></section></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style=" box-sizing: border-box; "><section class="" style="font-size: 14px; box-sizing: border-box;"><p style="box-sizing: border-box;"><span style="font-size: 16px;">以上是来自于互联网关于光模块的科普介绍，内容冗长繁杂，看过之后会觉得对光模块更不了解了，但是看到以下海康的光模块系列，我们来做有针对性的介绍，仔细看完定有收获。</span></p></section></section></section><section class="Powered-by-XIUMI V5" style=" box-sizing: border-box; " powered-by="xiumi.us"><section class="" style=" margin-top: 0.5em; margin-bottom: 0.5em;box-sizing: border-box; "><section class="" style="border-bottom-width: 2px; border-bottom-style: solid; border-bottom-color: rgb(95, 156, 239); box-sizing: border-box;"></section><section class="" style="width: 0px; border-top-width: 1em; border-top-style: solid; border-top-color: rgb(95, 156, 239); margin: auto; border-left-width: 0.8em !important; border-left-style: solid !important; border-left-color: transparent !important; border-right-width: 0.8em !important; border-right-style: solid !important; border-right-color: transparent !important; box-sizing: border-box;"></section></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style=" box-sizing: border-box; "><section class="" style="font-size: 14px; box-sizing: border-box;"><p style="box-sizing: border-box;"><span style="font-size: 16px;">在正式介绍我们产品前，先来复习一下高中物理知识</span></p></section></section></section><section class="Powered-by-XIUMI V5" style=" box-sizing: border-box; " powered-by="xiumi.us"><section class="" style=" text-align: center; margin-top: 10px; margin-bottom: 10px;box-sizing: border-box; "></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style=" box-sizing: border-box; "><section class="" style="box-sizing: border-box;"><p style="box-sizing: border-box;"><span style="box-sizing: border-box;"><strong style="box-sizing: border-box;">实验现象</strong>：</span><span style="box-sizing: border-box; font-size: 16px;">当单色光经过双缝后，在屏上产生了阴暗相间的干涉条纹</span></p><p style="box-sizing: border-box;"><span style="font-size: 16px;"><span style="font-size: 16px; box-sizing: border-box;"><strong style="box-sizing: border-box;">实现结论</strong>：</span><span style="box-sizing: border-box; font-size: 16px;">这个实验说明光也是一种电磁波，具有波的性质（从微观来看，由光子组成，具有粒子性；从宏观来看又表现出波动性），既然是波就会存在<span style="color: rgb(95, 156, 239); box-sizing: border-box;">同频干扰</span>的问题，引申来讲如果我们再一个物理信道上使用单一波长的光既接受信号又发送信号（至少二束光），就会产生不可避免的同频干扰，这种干扰是会严重影响通信的。</span></span><br style="box-sizing: border-box;"></p></section></section></section><section class="Powered-by-XIUMI V5" style=" box-sizing: border-box; " powered-by="xiumi.us"><section class="" style=" margin-top: 0.5em; margin-bottom: 0.5em;box-sizing: border-box; "><section class="" style="height: 1px; box-sizing: border-box; background-color: rgb(160, 160, 160);"></section></section></section><section class="Powered-by-XIUMI V5" style=" box-sizing: border-box; " powered-by="xiumi.us"><section class="" style=" margin-top: 10px; margin-bottom: 10px; text-align: center;box-sizing: border-box; "><section class="" style="display: inline-block; vertical-align: bottom; padding: 2px 8px; color: rgb(255, 255, 255); font-size: 21px; box-sizing: border-box; background-color: rgb(95, 156, 239);"><p style="box-sizing: border-box;">如何解决光波干扰</p></section><section class="" style="border: 1px solid rgb(95, 156, 239); margin-top: -1.86em; padding: 2em 10px 5px; box-sizing: border-box;"><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style=" box-sizing: border-box; "><section class="" style="text-align: left; padding: 5px; font-size: 14px; box-sizing: border-box;"><p style="box-sizing: border-box;"><span style="box-sizing: border-box;">1<span style="font-size: 16px; box-sizing: border-box;">.<strong style="box-sizing: border-box;"><span style="color: rgb(95, 156, 239); box-sizing: border-box;">单纤双向</span></strong></span>：</span></p><p style="box-sizing: border-box;"><span style="box-sizing: border-box; font-size: 16px;">利用WDM（波分复用）技术，发送和接受两个方向使用不同的中心波长。可以实现一根光纤双向传输光信号而解决单一信道上单一光波的同频干扰问题，<span style="color: rgb(46, 43, 43); box-sizing: border-box;">只有一个端口，通过光模块中的滤波器进行滤波，同时完成1310nm光信号的发射和1550nm光信号的接收或者相反。因此，该模块必须成对使用，他最大的优势就是</span><span style="color: rgb(18, 18, 17); box-sizing: border-box;"><span style="color: rgb(95, 156, 239); box-sizing: border-box;">节省光纤资源</span>。</span></span></p></section></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style=" font-size: 16px; margin: 20px 0%; transform: translate3d(5px, 0px, 0px); -webkit-transform: translate3d(5px, 0px, 0px); -moz-transform: translate3d(5px, 0px, 0px); -o-transform: translate3d(5px, 0px, 0px);box-sizing: border-box; "><section class="" style="text-align: left; color: rgb(18, 18, 17); line-height: 1.6; letter-spacing: 0px; padding-right: 5px; padding-left: 5px; box-sizing: border-box;"><p style="box-sizing: border-box;">2.<strong style="box-sizing: border-box;"><span style="color: rgb(95, 156, 239); box-sizing: border-box;">双纤双向</span></strong>：</p><p style="box-sizing: border-box;"><span style="box-sizing: border-box; font-size: 16px;">我们还可以在两个物理信道上传输相同波长的光，一物理信道用来发送信号，一物理信道用来接收信号，这样也可以解决同频干扰问题（此时虽然光波长相同，但是因为收发在不同物理信道上进行，也就不存在干扰了）。此时光模块有两个端口，TX为发射端口，RX为接收端口，而相对于单纤模块该类型<span style="letter-spacing: 0px; line-height: 1.6; box-sizing: border-box;">光模块需要多占用一芯光纤资源。</span></span></p></section></section></section></section></section></section><section class="Powered-by-XIUMI V5" style=" box-sizing: border-box; " powered-by="xiumi.us"><section class="" style=" margin-top: 10px; margin-bottom: 10px; text-align: center;box-sizing: border-box; "><section class="" style="border-bottom-color: rgb(95, 156, 239); font-size: 21px; border-bottom-width: 1px; border-bottom-style: solid; line-height: 1.2; padding-top: 5px; padding-bottom: 5px; box-sizing: border-box;"><p style="box-sizing: border-box;">配套组件-海康光模块介绍</p></section><section class="" style="border-bottom-width: 1px; border-bottom-style: solid; border-bottom-color: rgb(95, 156, 239); margin-top: 0.2em; margin-right: 2.3em; margin-left: 2.3em; box-sizing: border-box;"></section><section class="" style="border-bottom-width: 1px; border-bottom-style: solid; border-bottom-color: rgb(95, 156, 239); margin: 0.2em 4.6em; box-sizing: border-box;"></section><section class="" style="border-bottom-width: 1px; border-bottom-style: solid; border-bottom-color: rgb(95, 156, 239); margin-right: 6.9em; margin-left: 6.9em; box-sizing: border-box;"></section></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style=" box-sizing: border-box; "><section class="" style="font-size: 14px; box-sizing: border-box;"><p style="box-sizing: border-box;"><span style="font-size: 16px;">按封装类型来分有：SFP、SFP+、QSFP</span></p><p style="box-sizing: border-box;"><span style="font-size: 16px;">按速率分类有：155M、1.25G、10G、40G</span></p><p style="box-sizing: border-box;"><span style="font-size: 16px;">按波长分类有：850nm、1310nm、1550nm、1490nm、1270nm</span></p><p style="box-sizing: border-box;"><span style="font-size: 16px;">按模式分类有：单模光模块、多模光模块</span></p><p style="box-sizing: border-box;"><span style="font-size: 16px;">其中，QSFP(速率为40G)光模块为交换机集成线缆（模块与光纤一体化设计）无需单独配置，因此也不体现在具体的型号表中。</span></p></section></section></section><section class="Powered-by-XIUMI V5" style=" box-sizing: border-box; " powered-by="xiumi.us"><section class="" style=" margin-top: 0.5em; margin-bottom: 0.5em;box-sizing: border-box; "><section class="" style="border-bottom-width: 2px; border-bottom-style: solid; border-bottom-color: rgb(95, 156, 239); box-sizing: border-box;"></section><section class="" style="width: 0px; border-top-width: 1em; border-top-style: solid; border-top-color: rgb(95, 156, 239); margin: auto; border-left-width: 0.8em !important; border-left-style: solid !important; border-left-color: transparent !important; border-right-width: 0.8em !important; border-right-style: solid !important; border-right-color: transparent !important; box-sizing: border-box;"></section></section></section><section class="Powered-by-XIUMI V5" style=" box-sizing: border-box; " powered-by="xiumi.us"><section class="" style=" text-align: center; margin-top: 10px; margin-bottom: 10px;box-sizing: border-box; "></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style=" box-sizing: border-box; "><section class="" style="font-size: 14px; box-sizing: border-box;"><p style="box-sizing: border-box;"><span style="font-size: 16px;">样例型号解读：单模，双纤类型的光模块，中心波长1310nm,速率为千兆,最大传输距离为20km</span></p></section></section></section><section class="Powered-by-XIUMI V5" style=" box-sizing: border-box; " powered-by="xiumi.us"><section class="" style=" margin-top: 0.5em; margin-bottom: 0.5em;box-sizing: border-box; "><section style="border-top-width: 1px; border-top-style: dashed; border-top-color: rgb(95, 156, 239); box-sizing: border-box;" class=""></section></section></section><section class="Powered-by-XIUMI V5" style=" box-sizing: border-box; " powered-by="xiumi.us"><section class="" style=" text-align: center; margin-top: 10px; margin-bottom: 10px;box-sizing: border-box; "></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style=" box-sizing: border-box; "><section class="" style="font-size: 14px; box-sizing: border-box;"><p style="box-sizing: border-box;"><span style="font-size: 16px;">样例型号解读：多模，双纤类型的光模块，中心波长850nm,速率为万兆,最大传输距离为300m </span></p></section></section></section><section class="Powered-by-XIUMI V5" style=" box-sizing: border-box; " powered-by="xiumi.us"><section class="" style=" margin-top: 0.5em; margin-bottom: 0.5em;box-sizing: border-box; "><section class="" style="width: 0px; margin: auto; border-bottom-width: 1em; border-bottom-style: solid; border-bottom-color: rgb(95, 156, 239); border-left-width: 0.8em !important; border-left-style: solid !important; border-left-color: transparent !important; border-right-width: 0.8em !important; border-right-style: solid !important; border-right-color: transparent !important; box-sizing: border-box;"></section><section class="" style="border-bottom-width: 2px; border-bottom-style: solid; border-bottom-color: rgb(95, 156, 239); box-sizing: border-box;"></section></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style=" box-sizing: border-box; "><section class="" style="font-size: 14px; box-sizing: border-box;"><p style="box-sizing: border-box;"><span style="font-size: 16px;">看到这里很多人就有疑问了，多模光模块命名中并没有体现出距离，那<span style="color: rgb(95, 156, 239); box-sizing: border-box;">多模光模块的传输距离</span>是怎么确定的？</span></p><p style="box-sizing: border-box;"><span style="font-size: 16px;"><br></span></p></section></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style=" box-sizing: border-box; "><section class="" style="font-size: 14px; box-sizing: border-box;"><p style="box-sizing: border-box;"><span style="font-size: 16px;">多模光模块由于传输距离短，各速率模块距离都是固定的，不像单模,距离浮动范围大，因此没有体现在命名中，而是通过模块的速率来对应海康威视多模光模块的传输距离，不管<span style="font-size: 16px; color: rgb(95, 156, 239); box-sizing: border-box;">单纤双纤都遵循以下列表</span>：</span></p><p style="box-sizing: border-box;"><span style="font-size: 16px;"><br></span></p></section></section></section><section class="Powered-by-XIUMI V5" style=" box-sizing: border-box; " powered-by="xiumi.us"><section class="" style=" text-align: center; margin-top: 10px; margin-bottom: 10px;box-sizing: border-box; "></section></section><section class="Powered-by-XIUMI V5" style=" box-sizing: border-box; " powered-by="xiumi.us"><section class="" style=" margin-top: 10px; margin-bottom: 10px;box-sizing: border-box; "><section class="" style="display: inline-block; width: 100%; border: 2px solid rgb(95, 156, 239); box-sizing: border-box;"><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style=" padding: 10px; transform: translate3d(0px, 0px, 0px); -webkit-transform: translate3d(0px, 0px, 0px); -moz-transform: translate3d(0px, 0px, 0px); -o-transform: translate3d(0px, 0px, 0px);box-sizing: border-box; "><section class="" style="font-size: 14px; box-sizing: border-box;"><p style="box-sizing: border-box;"><span style="font-size: 16px;">PS：光模块（optical module）简单的说，光模块的作用就是光电转换，发送端把电信号转换成光信号，通过光纤传送后，接收端再把光信号转换成电信号。需要配合交换机一起使用（安装到交换机SFP插槽中），本身无法独立工作。</span></p></section></section></section></section></section></section><section class="Powered-by-XIUMI V5" style=" box-sizing: border-box; " powered-by="xiumi.us"><section class="" style=" margin-top: 0.5em; margin-bottom: 0.5em;box-sizing: border-box; "><section class="" style="width: 0px; display: inline-block; vertical-align: middle; box-sizing: border-box;"><section style=" transform: rotate(0.1deg); -webkit-transform: rotate(0.1deg); -moz-transform: rotate(0.1deg); -o-transform: rotate(0.1deg); box-sizing: border-box;"><section style="width: 0px; display: inline-block; vertical-align: middle; border-left-width: 1em; border-left-style: solid; border-left-color: rgb(95, 156, 239); border-top-width: 0.8em !important; border-top-style: solid !important; border-top-color: transparent !important; border-bottom-width: 0.8em !important; border-bottom-style: solid !important; border-bottom-color: transparent !important; box-sizing: border-box;"></section></section></section><section class="" style="width: 100%; margin-right: -1em; border-bottom-width: 2px; border-bottom-style: solid; border-bottom-color: rgb(95, 156, 239); display: inline-block; vertical-align: middle; box-sizing: border-box;"></section><section class="" style="width: 0px; margin: auto; display: inline-block; vertical-align: middle; border-right-width: 1em; border-right-style: solid; border-right-color: rgb(95, 156, 239); border-top-width: 0.8em !important; border-top-style: solid !important; border-top-color: transparent !important; border-bottom-width: 0.8em !important; border-bottom-style: solid !important; border-bottom-color: transparent !important; box-sizing: border-box;"></section></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style=" box-sizing: border-box; "><section class="" style="box-sizing: border-box;"><p style="text-align: center; box-sizing: border-box;"><span style="color: rgb(95, 156, 239); box-sizing: border-box;">----长按识别下图二维码关注我们----</span><br style="box-sizing: border-box;"></p></section></section></section><section class="Powered-by-XIUMI V5" style=" box-sizing: border-box; " powered-by="xiumi.us"><section class="" style=" text-align: center; margin-top: 10px; margin-bottom: 10px;box-sizing: border-box; "></section></section><section class="Powered-by-XIUMI V5" style="box-sizing: border-box;" powered-by="xiumi.us"><section class="" style=" box-sizing: border-box; "><section class="" style="box-sizing: border-box;"><p style="box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section></section></section></section><p><br></p>
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