Tag Archives 400G

As module bitrates increased from 100Gbs so too did the complexity of the modules. Starting with DSP based signal conditioning and clock recovery and onwards to pluggable coherent optics, PAM-4 and CMIS. With this new level of complexity, we had to take a very different approach to module-to-pluggable optics development, debugging and validation. Specifically, the […]

The recent pandemic has opened people’s eyes to the importance of the internet. Some may go further and propose that the internet is no longer a privilege but a rather basic human necessity. With this increased demand for fast connectivity and less network disruption, a worldwide 5G network rollout is greatly anticipated by both users […]

If you would like a more in-depth review of what the path forward with 800G pluggable optics may look like may we suggest watching Preparing the Way for 800G: 100G Electrical and 800G Pluggable Optics. —————————————————————————————————————————————————————————————– The creation of the 800G ecosystem has begun. Alpha samples of 800G OSFP modules have been demonstrated and we […]

One of the great challenges facing data communications is matching the silicon bandwidth with the face plate density. Today, switch silicon can process over 12 Tb/s. But getting this off the front panel at a reasonable density is a challenge. One direction is to move to faster Ethernet speeds. A great example of this is […]

Ethernet business services including cell site backhaul, internet access, and all the flavors of virtual private networks are among the most profitable and fastest growing services at many communications service providers. The best operations teams take great care to ensure business services are high quality on delivery to eliminate costly customer disputes. Here’s a list […]

This article is adapted with permission from an original version published by HUBER+SUHNER The customer is a world leader in multi-venue, multi-channel race broadcasting, telecasting more than 80,000 races each year to millions of viewers in Australia and around the globe. They recently started a major upgrade of their Data Center to support a new […]

Pluggable coherent optics offer advantages in many areas. One of the biggest factors is electronic dispersion compensation. For DCI, traditional ‘direct detect’ systems needed a detailed pre-planned link with dispersion compensation ‘engineered in’. This is both expensive and challenging to deploy. Scaling and maintaining are complicated. Electronic dispersion compensation inside the DSP of coherent modules […]

With the move to pluggable coherent optical modules for the first time since 10G, we see client and line side considerations coming together. The most obvious example of this is optical signal to noise (OSNR) and related measurements. For any modules with the potential for use in an amplified system, OSNR becomes the fundamental figure […]

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