QSFP28 4WDM-40

An Introduction to Three Specifications of 100G QSFP28 4WDM Optics

To satisfy the increasing demands on more-cost-effective and lower-power-consumption 100G optical networks, 100G QSFP28 4WDM optical transceivers emerge in the market. The 100G 4WDM series optical module currently includes three specifications in total: 100G QSFP28 4WDM-10, 100G QSFP28 4WDM-20, 100G QSFP28 4WDM-40. Today, in this article, Gigalight will mainly introduce them to you. Before coming into today’s topic, it will…

Dense Wavelength division multiplexing

Why to Use DWDM System in MAN and What Are its Networking Schemes?

On account that DWDM (Dense Wavelength Division Multiplexing) technology can make full use of the huge bandwidth resources of the optical fiber, greatly increasing the transmission capacity of the system and reducing the transmission cost, the technology has been widely used in the large-capacity transmission of long distance network and backbone network. If DWDM technology is introduced into the metropolitan…


QSFP28 CWDM4 vs. QSFP28 PSM4: Which One is More Cost-Effective?

Although a series of 200G or even 400G optical transceiver products emerge in the optical communication market, and they have not yet been put into commercial use currently due to that they are still in the stage of preparation in some aspects. Thus, 100G optical transceiver modules, especially QSFP28 PSM4 and QSFP28 CWDM4, are still spoiled in various application fields….

qsfp28 psm4 optics

Do You Know These about QSFP28 PSM4 Optics?

Although there have been 200G/400G optical transceiver products appearing in the optical communication market, and it does not mean that the era of 100G optical transceiver module has come to end. Actually, there still are various 100G QSFP28 optical modules in great favor, such as 100G QSFP28 PSM4 and 100G QSFP28 CWDM4 optical transceiver, which meets users’ requirements for transmission…

Dense Wavelength division multiplexing

Do You Know These about CWDM?

With the emerging of CWDM(Coarse Wavelength Division Multiplex) tech in the optical communication industry, various CWDM optical transceiver products appear in the markets, such as CWDM SFP+, CWDM SFP, CWDM XFP, 100G QSFP CWDM4 and so on. Well, today, Gigalight will have an introduction to CWDM from these viewpoints that you should have control of it. CWDM Definition and CWDM…

qsfp28 cwdm4

A Comprehensive Introduction to QSFP28 CWDM4: Definition, Advantages, Features, Applications

With the popularization of 100G Ethernet, the latest two types of 100G QSFP28 optical transceivers, 100G QSFP28 CWDM4 optical transceiver, and QSFP28 PSM4 optical transceiver are well recommended for the deployment of the 100G network, especially QSFP28 CWDM4 optics for long-reach transmission. Then Gigalight will have a comprehensive introduction to essential things that you should know about CWDM4 optical transceiver…