How to Easily Upgrade Your Network to 40G Ethernet
The increasing need for higher
bandwidth and faster data transmission drives the evolution of network
Ethernet. 40G Ethernet is gradually becoming commonplace in telecommunication
networks, as 10G cannot satisfy the never-stopping longing for higher speed
communication any more. Unlike 1G migrating to 10G, 10G migrating to 40G gets
across a much larger span in terms of not only transmission data rate but also
technologies. Thus, the deployment of 40G is much more complicated than that of
10G. Today, I’d like to introduce several indispensable components to help
those who want to easily upgrade their network to 40G Ethernet.
Fiber optic transceiver is a very basic
component in today’s telecommunication network. It is composed of both a
transmitter and a receiver that are arranged in parallel so that they can
operate with their own circuity that enables each of them to handle transmission
in both directions. There are different types of optical transceivers for
different Ethernet networks, such as GBIC for 1G, SFP+ for 10G, CFP for 100G.
As for 40G data transmission, QSFP+ (quad small form-factor plus) transceiver
module is the most commonly used type.
QSFP+ transceiver (shown in picture
below) is a compact, hot-pluggable transceiver, which is evolved from QSFP
transceiver, used for high-speed data communications applications. It provides
four channels of data in one pluggable interface, with each channel capable of
transmitting data at 10Gbps and supporting a total of 40Gbps. The 40G QSFP+
transceiver offers customers high-density 40G connectivity option for data
center, high-performance computing networks, enterprise core and distribution
layers, and service provider transport applications.
High-Density MPO/MTP Cables
Unlike standard fiber patch cables with
the maximum data rate of 10Gbps, a patch cord terminated with 12-fiber or
24-fiber MPO/MTP connectors is available for 40G, or even 100G Ethernet.
MPO/MTP trunk cable and MPO/MTP harness cable are the two widely applied
high-density fiber cables in upgrading network to 40G Ethernet.
MPO/MTP Trunk Cable—MPO/MTP trunk
cable, terminated with MPO/MTP connectors at both end, are typically available
with 12 to 144 fibers and create a permanent fiber links between panels in a
structured environment. With plug and play architecture, MPO/MTP trunk cable
greatly reduces the initial installation and ongoing maintenance costs.
Generally, 12-fiber and 24-fiber MPO/MTP trunk cables are respectively commonly
used types for 40G and 100G applications. Here is a 72-fiber MPO/MTP trunk
cable with 6 MPO/MTP connectors at both ends.
MPO/MTP Harness Cable—MPO/MTP harness
cable, also named MPO/MTP fan-out cable or MTP/MPO breakout cable, is
terminated with a male/female MTP connector on one side and several duplex
LC/SC connectors on the other side, providing a transmission from multi-fiber
cables to individual fiber or duplex fiber connectors. Compared to normal LC
fiber optic cable, these cables are designed for high density applications
which require high performance and fast installation. MPO/MPO harness cables
are ideal for interconnecting MPO/MTP cassettes, panels or backbone MPO/MTP
assemblies with the active equipment, saving costly data center rack space and
easing fiber management. The image below shows a 1m MTP-4LC SMM harness cable.
40G QSFP+ Cable Assemblies
40G QSFP+ cable is a cost-effective
solution for 40G data center. It is a low-power alternative to optical QSFP+
system. 40G QSFP+ direct attach cable (DAC) and 40G QSFP+ active optical cable
(AOC) are two types os 40G QSFP+ cables.
40G QSFP+ DAC—QSFP+ DAC is a copper 40
Gigabit Ethernet cable which comes in either an active or passive twinax cable
assembly and connects directly into a QSFP+ housing. An active twinax cable has
active electronic components in the QSFP+ housing, while the passive twinax
cable is mainly just a straight “wire” and contains few components. Generally,
twinax cables shorter than 5 meters are passive and those longer than 5 meters
are active.
40G QSFP+ AOC—QSFP+ AOC is a cabling
technology that accepts the same electrical inputs as a traditional copper
cable, but uses optical fiber between the connectors. QSFP+ AOC uses
electrical-to-optical conversion on the cable ends to improve speed and
distance performance of the cable without sacrificing compatibility with
standard electrical interfaces. The following picture shows a QSFP+ to 4SFP+
AOC and a QSFP+ to QSFP+ DAC.
Conclusion
To upgrade your network to 40G
Ethernet, you should prepare components like QSFP+ transceivers, MPO/MTP fiber
cables and QSFP+ cables, etc. All of these devices can be purchased in
fiber-mart.COM. Just need a click, you can take all these components to home
and upgrade to 40G Ethernet easily.
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