In part one of this series, we talked
about the need for data center managers to be aware of their infrastructure
sizes and links to support future speeds. Now we’ll talk cost and assurance.
CommScope has a Fiber Performance Calculator that provides
engineered link designs and guarantees application performance. The tool models
the end-to-end optic performance of cabling and apparatus from multiple link
segments. You select the type of media – singlemode or multimode. Additionally,
you also select low loss or ultra-low loss (ULL) apparatus for additional
connectivity requirements and extended reach. This tool provides the maximum
loss for the links you have designed and the guaranteed distance for all
popular high speed singlemode or multimode optic applications.
The extended bandwidth multimode OM5 fiber has a greatly enhanced guaranteed
performance for two wavelength BiDi technology. The figure to the right (CommScope
guaranteed application support matrix) highlights the increased reach by
combining OM5 and ULL apparatus. It follows that four wavelength SWDM4 will
also benefit from extended bandwidth and ULL apparatus. A three segment link (6
MPO, 6 LC) maintains the ability to reach 140m.
Singlemode optics are also becoming more viable for data center links as
the cost of the optic modules are being adapted for lower power short-reach
applications. Most short-reach optics are built to support a 500m reach with
four connections points. An example of the link design from the IEEE 802.3 bs
standard is similar to other short-reach singlemode applications.
These applications rely on low-loss singlemode connectivity. ULL
apparatus is especially helpful here. Up to four preterminated links can be
supported while maintaining the 500m reach, doubling the channel connections
while holding the IL to less than 2.65db.
OM5 represents a new standard in higher performance multimode fiber. It
is designed to maximize the potential for multiple wavelength operation, which
therefore promises to extend the capacity of multimode fiber in the future.
CLICK TO TWEET: Let's talk cost and assurance when it comes to data center infrastructure.
Transceiver manufacturers are developing support for lower cost, higher
speed singlemode and multimode optic modules. These modules support duplex
SWDM4 and BiDi applications at speeds of 40G and 100G with higher speeds on the
roadmap. OM5 fiber extends the reach of these multi-wavelength applications. New
singlemode modules with lower power laser sources reduce cost, but also require
the physical network components to deliver lower loss to support the objective
of longer link length.
CommScope’s Application Assurance combines
these new technologies into an engineered guaranteed link design. Design with
speed in mind and be assured that as you progress to higher network capacity,
your original infrastructure investments will support your needs and minimize
your network costs.