EM2009-VOA4 Datasheet, PDF (1/2 Pages) MRV Communications, Inc. – LambdaDriver® - Variable Optical Attenuators (VOA) Module

WDM & Optical Transport
Datasheet
LambdaDriver® - Variable Optical Attenuators (VOA) Module
(EM2009-VOA4/EM2009-VOA8)
Features
Remotely tunable
Hot swappable
20dB range tuning
0.2dB steps
Lowest loss at Power down.
Applications
In services optical power adjustment
EM2009-VOA4/EM2009-VOA8
Overview
The Variable Optical Attenuators (VOA) modules are
important building blocks of the LambdaDriver Optical
Transport System.
Usually, a WDM network design is done using the worst-
case optical parameters specified by the vendors for
various components such as Transponders, Pluggable
Optics etc. In many cases, the actual parameters turn out
to be different –better in the majority of cases. Also when
using Optical Amplifiers there might be a need to equalize
the optical power levels of channels added at a node to
those passing through and into the Optical Amplifier. This
is where Optical Attenuators necessary.
Without VOAs, the task of performing the trimming and
tuning of the Optical Power levels is done using fixed or
manually variable optical attenuators that require on site
presence and fiber optic patch cables handling.
The role of the remotely tunable VOA is to eliminate the
need for on-site presence and the associated cabling
handling when Optical Power level adjustments are
required.
The tremendous advantage of using the VOAs is obvious
MRV provides two types of VOA modules:
The EM2009-VOA4 incorporates 4 Variable Optical
Attenuators while the EM2009-VOA8 incorporates 8
Variable Optical Attenuators. The modules are single short-
size slot and so can be hosted in any LambdaDriver chassis
with MNGP model management card.
Each attenuator can be separately and remotely tuned
to the required value via the Management module of the
specific chassis. The attenuation range is from 0dB (clear
state) to 20dB in steps of 0.2dB.
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