The Difference Between 100G QSFP28 Fiber Optical Transceiver and 100G CFP4 Fiber Optical Transceiver

2023-12-01 T&S Blogs

1. What is Fiber Optical Transceiver

The fiber optical transceiver is an optoelectronic device that performs electro-optical and photoelectric conversion. The fiber optical transceiver is a carrier, acting as the transmitting end to convert electrical signals into optical signals, and as the receiving end to convert the optical signals into electrical signals.


Fiber optical transceivers can be divided into SFP, SFP+, XFP, QSFP+, QSFP28, QSFPDD according to the packaging form, and the types of optical interfaces include SC and LC.


Fiber optical transceivers can be divided into 155M, 622M, 1.25G (1024M), 10G (10*1024M), 40G, 25G, 100G, 200G, 400G, etc. according to the transmission rate.


The higher the transmission rate of the fiber optical transceiver is, the shorter the transmission distance. According to the transmission distance, it can be divided into short distance (2KM and below), medium distance (10 to 20KM), long distance (above 30 to 40KM), including 550M, 300M, 2KM, 10KM, 20KM, 40KM, 60KM, 80KM, 100KM, 120KM.


The longer the wavelength of the fiber optical transceiver, the longer the transmission distance. According to the wavelength of transceiver, it can be divided into 850nm(MM), 1310(nm), 1550(nm), CWDM, DWDM


Fiber optical transceivers are divided into single-mode fiber optical transceivers and multi-mode fiber optical transceivers. Single-mode fiber optical transceivers are suitable for long-distance transmission; multi-mode transceivers are suitable for short-distance transmission. Therefore, the price of a single-mode fiber optical transceiver is a bit more expensive than that of a multi-mode fiber optical transceiver.


2. The difference between 100G QSFP28 fiber optical transceiver and 100G CFP4 fiber optical transceiver

The 100G QSFP28 fiber optical transceiver is suitable for a variety of transmission distances and application scenarios, which is mainly used in 100G Ethernet and EDRInfiniBand, and is an important part of the 100G network. It has the advantages of low power consumption, small size, high port density, etc., and is liked by the majority of customers.


The 100G CFP fiber optical transceiver has gone through CFP, CFP2, and now CFP4 fiber optical transceiver. The technology is mature and can support hot swap. However, its volume is larger than that of QSFP28 fiber optical transceiver, with few categories, and it is not suitable for many application scenarios.


CFP4 is specified by CFP MSA, and its size is slightly larger than that of QSFP28. The interface between MAC and PHY varies according to the application, and control and monitoring are achieved through the MDIO interface. Generally it is used for access networks and metropolitan area networks.


100G QSFP28 is specified by IEEE. It is smaller in size than CFP4. It is currently one of the 100G modules with the highest level of integration (CXP is more integrated). The interface between MAC and PHY is CAUI-4, and control and monitoring are achieved through the I2C interface. Generally it is used in data centers.


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原厂动态    发布时间 : 2023-04-14

数据中心光互联技术及应用研讨会圆满落幕,太辰光介绍了自主研发的高密度、高可靠、低插损光背板连接技术

数据中心光互联技术及应用研讨会圆满落幕2020-09-23 11:23:199月10日,主题为“数据中心光互联技术及应用”的研讨会在深圳国际会展中心顺利召开,政府部门、中国联通、太辰光的领导和业内著名的技术专家、嘉宾参与会议研讨。

原厂动态    发布时间 : 2024-07-26

【产品】太辰光推出SEN-T-04型温度传感器,适用于电力电缆、石化管道、储油罐、地铁消防等领域温度监测

SEN-T-04型温度传感器是太辰光利用光想光栅固有的温度敏感特性感测温度,光纤光栅采用特殊方式封装,增加了传感器对温度的敏感性,防水性能好,响应速度快,特别适用于电力电缆、石化管道、储油罐、地铁消防、隧道防火、水利工程等领域的温度监测。

产品    发布时间 : 2022-06-12

【产品】啁啾光纤光栅3dB带宽2~20nm,反射率超过90%

太辰光推出啁啾光纤光栅,其周期沿光栅长度呈线性变化,可利用非周期相位掩模制作啁啾光纤光栅。不均匀光栅周期(光栅折射率调制的周期和幅度)的布喇格光栅称之为啁啾光栅。用于EDFA和ASE光源的增益平坦化和色散补偿通信系统。

产品    发布时间 : 2022-07-10

【元件】太辰光通信推出新型光纤智能螺栓,直接将光栅应变片直接粘贴在螺栓孔内其灵敏度相比于传统方案至少提高5倍

太辰光公司开发的新型光纤智能螺栓是直接将光栅应变片直接粘贴在螺栓孔内,让光栅应变片能够快速“感受”螺栓内部的应变,其灵敏度相比于传统方案(即毛细钢管方案)至少提高5倍。此外,光纤智能螺栓还自带温补功能,很好解决了温度与应变交叉敏感问题,使得测量更加准确。

产品    发布时间 : 2024-04-03

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