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Explore the applications and features of 10G SFP+ DWDM colored optical modules


Abstract: In the field of network communications, as the demand for data transmission continues to grow, the 10G SFP+ DWDM color optical module has attracted much attention as a high-performance optical fiber transmission solution. This article will introduce the characteristics, DWDM band, CDR function and application scenarios of 10G SFP+ DWDM colored optical modules.

Overview of 10G SFP+ DWDM color optical module

10G SFP+ DWDM color optical module is an optical fiber transmission solution for high-density data. Compared with ordinary optical modules, its main difference is that it adopts DWDM (Dense Wavelength Division Multiplexing) technology, which can realize the transmission of multiple wavelength signals on the same optical fiber. This means that it can transmit multiple optical signals of different wavelengths simultaneously, enabling high-density, high-bandwidth data transmission. 10G SFP+ DWDM color optical modules usually work in C-band (approximately 1530nm to 1565nm) or L-band (approximately 1570nm to 1610nm). The specific wavelength depends on the selected DWDM channel.

Introduction to DWDM technology

DWDM (Dense Wavelength Division Multiplexing) technology is a high-density optical fiber communication technology that achieves high-density capacity data transmission by simultaneously transmitting multiple optical signals of different wavelengths on optical fibers. It can achieve multiplexing and demultiplexing of dozens or even hundreds of wavelengths in optical fibers, greatly improving the transmission capacity of optical fiber networks. DWDM technology is widely used in long-distance transmission and large-capacity data communications, including metropolitan area networks, wide area networks, data center interconnections, and backbone networks of telecommunications and Internet service providers.

The role of CDR function

CDR (Clock and Data Recovery) refers to the clock and data recovery function, which is one of the important functions in the 10G SFP+ DWDM color optical module. Optical signals are subject to various interferences and attenuation during transmission, resulting in distortion of clock and data information. By using the CDR function, the signal can be re-clocked and data restored at the receiving end so that the signal can remain stable, thereby improving the quality and reliability of data transmission. For example, 10G SFP+ DWDM with CDR can lock the signal to 10G without any offset. Turning this off can achieve rate compatibility with frequency doubling relationships, such as transmitting 5G, 2.5G, or 1.25G. However, as transmission changes over time, the eye diagram of the optical module will shift to a certain extent, which will have a certain impact on the transmission network.

Application scenarios

10G SFP+ DWDM color optical modules are mainly used in the backbone links of long-distance metropolitan area networks and wide area networks. The specific usage scenario can be that there are Huawei or H3C switches on both sides, and OTN equipment is used for transmission in the middle.


As a high-performance, high-reliability optical fiber transmission solution, the 10G SFP+ DWDM color optical module has features such as multi-wavelength transmission, DWDM band selection, and CDR functions. It is widely used in long-distance transmission, data center interconnection, optical communication networks, and video surveillance. It has a wide range of applications in systems and other fields. With the continuous advancement of technology and the growing market demand, 10G SFP+ DWDM colored optical modules will continue to play an important role in promoting the development and progress of network communication technology.

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