• May 15. 2026

In the field of optical communications, tunable DWDM optical modules are gradually becoming a key component for interconnecting backbone networks and data centers. What makes them so special? Traditional DWDM optical modules employ a "fixed wavelength" design, meaning each module can only transmit one specific ITU-T standard wavelength. This implies that a dense wavelength division multiplexing (D...

• August 14. 2025

At a time when network technology is changing rapidly, 10G networks are gradually becoming popular among the general public, and 10G optical modules, as key components for achieving high-speed optical fiber transmission, are of great importance. ETU-Link 10G SFP+ optical modules use the latest mainstream optical chip technology and packaging technology to achieve lower power consumption and lower ...

• July 18. 2024

With the rapid development of information technology and the increasing demand for data transmission, optical communication technology plays a crucial role in modern networks.DWDM technology dramatically increases the capacity of data transmission by using multiple optical signals of different wavelengths on a single optical fiber at the same time. Tunable modules enable flexible and efficient wav...

• July 05. 2023

10G SFP+ optical switch has been widely used in data centers and enterprises. In this blog, ETU-LINK lists the connection schemes that accessible 10G SFP+ ports? And under what circumstances is it more appropriate to choose which one. Firstly, if the transmission distance is relatively close, we can consider using ETU 10G DAC cables for transmission. The length specifications of DACs on the market...

• March 18. 2023

ETU-LINK will introduce to you what is 10G SFP+ DWDM optical module and its advantages.   The traditional optical fiber communication system is transmits one optical signal in one optical fiber. This method actually only uses a part of the optical fiber bandwidth. In order to make full use of the huge bandwidth resources of the optical fiber and increase the transmission capacity of the ...

• March 04. 2023

In this blog, ETU-LINK will talk about 10G DWDM Tunable module and its differences from ordinary DWDM optical module. The wavelength of 10G conventional SFP+ DWDM optical module is fixed, while 10G SFP+ DWDM Tunable optical module can be configured to output different DWDM wavelengths. The wavelength tunable optical module has the characteristics of flexible...

• July 21. 2022

In the construction of metropolitan area network, wavelength division multiplexing equipment is an important part, mainly including CWDM coarse wavelength division multiplexing equipment and DWDM dense wavelength division multiplexing equipment, so what is the difference between the two? In this article, ETU-LINK will tell you the difference between CWDM equipment and DWDM equipment.   1.&nbs...

• May 26. 2022

In this blog, ETU-Link will take 10G SFP+ DWDM optical module as an application case to introduce its application in DWDM optical transmission system. The equipment used in this case are: DWDM wavelength division multiplexer & demultiplexer, 10G SFP+ DWDM 80KM optical module, EDFA optical amplifier, 10G switch. Schematic analysis: As the total length of the link is 500KM, and the capacity requ...