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Specialist magazine CONNECTIONS no. 60

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While MPO connectors with 12, 16 or 24<br />

fibers could also help, the new miniature<br />

connectors enable direct access to every<br />

individual channel. They can be patched individually.<br />

This makes it simpler, for example,<br />

to establish links between different switches<br />

with 4x100G to 400G. A decisive advantage<br />

for network planning.<br />

Packing density multiplied<br />

First of all, Senko launched the CS connector.<br />

It doubles the packing density of the LC<br />

connector and can triple the fiber density in<br />

patch panels. Then Senko quickly came up<br />

with, and launched, the SN connector. It takes<br />

up even less space than the CS. It can be<br />

used to terminate up to 384 fibers on one<br />

height unit.<br />

US Conec followed suit with its MDC connector.<br />

The MDC can also triple fiber density.<br />

It is said to allow a packing density of 432<br />

fibers on one rack height unit.<br />

The footprint of the SN and MDC connectors<br />

is about the same. They are classified as<br />

VSFF connectors (Very Small Form Factor).<br />

They are not compatible due to small design<br />

differences in the plug face.<br />

The IEC is currently standardizing the two<br />

VSFF connectors. Form and functionality<br />

will no longer change. They have already<br />

been anchored in the specifications for the<br />

multi-source agreement (MSA). MSA manufacturers<br />

are integrating the design of the<br />

plug faces in the first QSFP-DD and OSFP<br />

adapters.<br />

Eight-channel configuration<br />

Four channels (eight fibers) per module can<br />

be set up with both VSFF connectors. This<br />

would pave the way to 400G using 8-channel<br />

configuration (8 x 50G). Hyperscale data<br />

centers would be the first users. Edge data<br />

centers could also benefit with an increase<br />

in capacity.<br />

Currently – April 2021 – it is difficult to identify<br />

a winner. The data center market appears<br />

to be welcoming both VSFF connectors with<br />

equal enthusiasm. At the moment, it is impossible<br />

to say which is the optimal connector for<br />

migration to 400G. The Senko pioneer, the<br />

CS connector, is receiving more attention in<br />

the telecom industry.<br />

Netscale as a platform<br />

R&M offers the option of using both VSFF<br />

connectors, as well as the CS connector, in<br />

the latest Netscale distributors. The already<br />

record-breaking Netscale port density with<br />

up to 120 LC Duplex ports per height unit<br />

can thus be increased effectively once more.<br />

Users will ask how they should handle the<br />

cables with this packing density.<br />

Three new connector types for<br />

ultra high density cabling<br />

050.7088<br />

CS connector from Senko<br />

050.7089<br />

SN connector from Senko<br />

050.7090<br />

MDC connector from US Conec<br />

050.7108<br />

Demand for next generation network<br />

Datacom Transceivers<br />

Revenue ($mm)<br />

$ 4,500<br />

$ 4,000<br />

$ 3,500<br />

$ 3,000<br />

$ 2,500<br />

$ 2,000<br />

$ 1,500<br />

$ 1,000<br />

$ 500<br />

$ 0<br />

2018 2019 2020 2021 2022 2023 2024 2025<br />

100 GbE 200 GbE 400 GbE<br />

Source: Ovum<br />

The R&M development team has looked at<br />

this challenge in detail and already knows<br />

the answer. An advanced, carefully designed<br />

cable management system will facilitate work<br />

on the patch panel front. The solution supports<br />

the monitoring of the ports and cables.<br />

Market launch is imminent.<br />

050.6231<br />

Dr. Blanca Ruíz<br />

Technology & Innovation Manager<br />

blanca.ruiz@rdm.com<br />

04|2021–<strong>60</strong> <strong>CONNECTIONS</strong> | 43

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