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4 Alcatel-Lucent 1692 Metrospan Edge
A Cost-optimized System
The Alcatel-Lucent 1692 MSE is a
cost-optimized coarse WDM (CWDM)
transport system designed to meet the
requirements of enterprise and metro
access networks. This means that the
service provider or enterprise can start
with (and pay for) only the number of
channels and asso ciated equip ment
identified by short-term forecasts.
As the fore cast moves forward in time
and as demand increas es, the capacity
and number of wavelengths can be
increased. Alcatel-Lucent further
reduces its customers’ initial costs
by using small form-factor pluggable
(SFP) laser diode modules that do
not need to be pur chased until the
appropriate fibers are lit or new wave -
lengths are added. Over time, the
1692 MSE can easily be upgrad ed
(in situ) to the 1696 Metrospan,
allow ing the intro duction of dense
WDM (DWDM).
In addition to these low-cost SFP
modules, the Alcatel-Lucent 1692
MSE uses a sophisticated optical
mux/ demux unit that eliminates
the need for an expensive wavelength
con troller. This provides enterprises
and network opera tors with a low-
cost CWDM system, perfectly suited
to short-haul and medium-haul
applications.
The Alcatel-Lucent 1692 MSE not
only provides reliable transport of new
revenue generating services for metro -
pol itan markets, but also offers a
low-cost solution for cost-sensitive
metropolitan access networks and
private networks. The Alcatel-Lucent
1692 MSE is a low-cost CWDM trans -
port system. It uses laser diodes spaced
at 20 nm, thereby relaxing require -
ments for the optical mux/demux
unit, and reducing the cost of com -
ponents. With the wide wavelength
range of CWDM, generally no
ampli fiers are required for ranges
less than 80 km.