QSFP28 4WDM-40 vs.CWDM4

A Comparison of QSFP28 4WDM and QSFP28 CWDM4

Both 4WDM and CWDM4 belong to 100G QSFP28 series optical transceiver and are certainly related to WDM (wavelength division multiplexing)tech. Maybe there are still people confused about what differences between QSFP28 4WDM and QSFP28 CWDM4 optical transceiver are. An Introduction to 100G QSFP28 4WDM Optical Transceiver 4WDM(4-Wavelength Wavelength Division Multiplexing) optical module is defined by 4WDM MSA, targeted for longer…

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….

Fiber Optic monitoring system

Why is it Essential to Monitor a Fiber Optic Network?

Fiber networks all over the world has been increasing with the explosive growth in the data market. Globally, there are more than 5 billion kilometers of optical fibers installed, underground, aerially or under the sea. This corresponds to almost 138 million cable kilometers. It is also estimated roughly by some experts that on an average there are around 1566 fiber cuts every day. In other words, there are more than 1 fiber cut at every minute at some part of the world.

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…