Last month our article went in depth on the developing world
of GPON networks operating inside buildings. A concept which virtually
eliminates the need for extensive inter-building cabling systems, transforming
miles of copper cabling infrastructure into just a simple, single circuit fiber
backbone. We also discussed CWDM passive technology which makes GPON easier
than ever to deploy in buildings.
It is quite apparent that GPON technology has leap-frogged
the Division 17 CSI Master Format specifications for new building construction,
in that Division 17 still indicates the need for massive conduit and raceway
infrastructures to support heavy inter-building cabling. And since CSI
revisions only occur every five years or so, the change in infrastructure
design will no doubt lag far behind the physical change itself.
This month we will take a look at the devices that make up a
smart building and how network design is adapting to deliver GPON direct to the
What is a Smart Building and how will it shape the future of society
|In a day and age when
environmental concerns loom deep within our society, the concept of Smart
Buildings has become more of a reality. Architects and Engineers, more
often than not are being asked what they know about smart building
technology. It only stands to reason
that they would be asked such questions because a building that is designed
today must be able to last up to 50 plus years.
To help provide answers, several
electronic manufacturers have already addressed the means for computerized and
remote control of buildings via the Internet.
today's smart building, it is now possible for a building manager or owner to
regulate virtually every energy consuming device straight from their cell
phone. Not only can they control environmental aspects of the building, they
can also control security and monitor virtually every aspect of their building
on-site or remotely.
One of the most important aspects
of the Smart Building is that of environmental monitoring to establish trend
analysis data, as well as providing zone controls that can minimize wasteful
energy consumption. In order to monitor
and establish trends, sophisticated computer programs have been developed to
track seasonal changes, social behavior and catastrophic events.
One might think that sensors
planted all over a building may take a significant amount of cabling however,
with optical CWDM in place it becomes possible to connect to every device with
a single optical circuit operating at one specific wavelength.
In the past, standards identified
a single method of inter-building cabling, which was given the name "Structured
Cabling". It identified a cabling system
based on maximum transmission distances of various mediums as well as the types
of electronics that were available at that time.
The cabling structure was dubbed
as a Distributed Architecture that consisted of a backbone cable signal that
was distributed from the main computer center to various remote
telecommunications closets where the signal was read, repeated, amplified and
re-directed through a hub, switch or router and on to the end user.
This was how it used to be before
fiber optic cable became prevalent in inter-building backbones. As fiber pushed deeper into the building,
standards were re-written to address the new technology. In standard revisions that followed the
original Structured Cabling standard, Centralized Cabling was addressed that
took into consideration the extended distances possible when using fiber
The widespread use of SFPs
brought on the concept of Active Transceiver Multiplexing when they developed
dual wavelength SFPs capable of doubling the allocated bandwidth to a single
circuit. This was a remarkable feat in
itself, but it only served to fuel the fire of "what's next".
What came next was the
development of Passive Optical Networking within Local Area Networks, served by
a host of SFPs with various wavelengths that could be placed on a single fiber
or fiber pair simultaneously, transported to various drop locations and then
uniquely separated or De-multiplexed to individual devices.
The concept took off very fast
because those who manufactured the switches saw the writing on the wall, which
was put there by carrier and service providers, making a conscience decision to
drastically expand bandwidth capabilities through the use of fiber optics and
CWDM architectures.This only stands to reason when
one considers that the growth of the industry itself is based on the number of
component ports sold globally on an annual basis.
Because of the public's
everlasting thirst for bandwidth, GPON and passive multiplexing are here to
stay and growth in regard to these technologies is expected to continue at an outstanding
rate in decades to come. Just remember, as bandwidth
increases within a circuit, the rules regarding quality and transmission
standards will certainly change in complexity and those who offer training to
current standards and required methods will become a valuable asset to you.
Click Here for More Articles