推荐回答（5个）
1、遵守协议不同
光模块SFP：SFP协议规范：IEEE802.3、SFF-8472 。
光模块SFP⁺：SFP+遵从的协议：IEEE 802.3ae、SFF-8431、SFF-8432。
2、制作成本不同
光模块SFP的制作成本比光模块SFP⁺制作成本高。
3、传播波长，距离不同
光模块SFP：波长为850nm为SFP多模，传输距离在2KM以下。
光模块SFP⁺：波长是1310/1550nm的为单模，传输距离在2KM以上。
扩展资料：
模式分类：
1、多模
几乎所有的多模光纤尺寸均为50/125um或62.5/125um，并且带宽（光纤的信息传输量）通常为200MHz到2GHz。多模光端机通过多模光纤可进行长达5公里的传输。以发光二极管或激光器为光源。拉环或者体外颜色为黑色。
2、单模
单模光纤的尺寸为9-10/125µm，并且较之多模光纤具有无限量带宽和更低损耗的特性。而单模光端机多用于长距离传输，有时可达到150至200公里。采用LD或光谱线较窄的LED作为光源。拉环或者体外颜色为蓝色、黄色或者紫色。
区别与联系：
单模光纤价格便宜，但单模设备较之同类的多模设备却昂贵很多。单模设备通常既可在单模光纤上运行，亦可在多模光纤上运行，而多模设备只限于在多模光纤上运行。
10G模块经历了从300Pin，XENPAK，X2，XFP的发展，最终实现了用和SFP一样的尺寸传输10G的信号，这就是SFP+。SFP凭借其小型化低成本等优势满足了设备对光模块高密度的需求，从2002年标准推了，到2010年已经取代XFP成为10G 市场主流。
参考资料来源：百度百科-SFP光模块
一、模块速率不同
1、光模块SFP：是SFP封装的热插拔小封装模块，目前最高速率可达10.3G，接口为LC。
2、光模块SFP+：一种可热插拔的，独立于通信协议的光学收发器，用于10G bps的SONET/SDH，光纤通道，gigabit Ethernet，10 gigabit Ethernet和其他应用中，也包括 DWDM 链路。
二、遵守协议不同
1、光模块SFP：SFP协议规范：IEEE802.3、SFF-8472。
2、光模块SFP+：SFP+遵从的协议：IEEE 802.3ae、SFF-8431、SFF-8432。
三、传输波长不同
1、光模块SFP：分有850nm/1310nm/1550nm/1490nm/1530nm/1610nm,波长为850nm为SFP多模，传输距离在2KM以下，波长是1310/1550nm的为单模，传输距离在2KM以上
2、光模块SFP+：传输光的波长是 850nm, 1310nm 或1550nm。
参考资料来源：百度百科-SFP+
参考资料来源：百度百科-SFP光模块
SFP+光收发器是SFP（有时也称作“mini-GBIC”）的升级。在吉比特以太网和1G、2G、4G光纤通道上SFP已经得到了广泛应用。SFP+为了适应更高的数据速率，设计了比SFP增强的电磁屏蔽与信号保护特性，并且制定了新的电接口规范。
光线交换机直接插光纤头就可以了，sfp模块交换机需要再交换机上插上sfp模块，再把光纤头查到sfp模块上面。
路由器交换机用直通线可连接，带光口可用光纤连接，发接收，收接发
SFP+光模块是SFP光模块的升级版，它可达到10Gbps速率
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