QSFP28 transceiver for long distances

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QSFP28 transceivers are enormous power hungry in their support of optical distances up to 80 kilometers!

QSFP28 transceivers have become the de facto standard for 100G. A wide range of different versions covering distances from a couple of meters to 80km are now available. With the ability to support ANY QSFP28 (or QSFP+) transceiver, there is nothing like the Cubo mini to simplify & lower the cost of Edge Optical Systems.


The MSA specifies 7 different power classes for QSFP28. Some routers out there only support up to power class 4, others support up to power class 7 but at the cost of reducing the number of ports being used. Only a few routers natively support up to power class 7.


DWDM QSFP28 has a high power consumption (5W typical, up to 7 W max). This is more than common 100 G switches and routers are able to supply and the QSFP28 ports usually are supporting. The ZR4 comes with limitations on its own, as there is an extreme high power consumption. An additional device to power the DWDM QSFP28 is required.


Are you having problems when 100G traffic needs to be transported over a long distance? Connecting between geographically scattered data centers over long distance? Depending on the functionality and reach of a QSFP28 transceiver, the required electrical power can be different from type to type.

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Tamed by CUBO mini

The CUBO mini 100G ODD supports all power classes on both QSFP28 ports. It therefore can be used as a power class extender for those cases where a transceiver is required that has a power class that isn’t supported by the router.

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100G optical transport applications for short distances up to 30km nowadays are simple and much more cost-effective. This is especially the case since QSFP28 transceivers have become the de facto standard and a wide range of different versions covering distances from a couple of meters to multiple kilometres. However, there are still those situations and configurations where QSFP28 transceivers reach their limits or simply cannot be used.


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