WDM & Optical Transport
In APC mode, the module maintains the output total Optical Amplifier modules provide Automatic Power
power constant at the pre-defined Output Power Shutdown, when input is below auto-shutdown
settings.
threshold. Power Shutdown can be also forced through
Additionaly a special OA module, EM800-OAPD, includes the management.
an integrated Tunable Optical Dispersion Compensator
(TODC). Tuning of dispersion is done via the system The compact, 1-slot LambdaDriver Optical Amplifier
management module.
modules install into any of the LambdaDriver®
chassis.
Most of the standard EDFA units have maximum
+18dBm total output power. Special“High Power”EDFA
There are 3 types of OAs: Booster, In-Line and Pre- modules have maximum +22dBm total output power
Amplifier. The main difference between these modules that mainly serve high wavelength count (more than
is the Input power level that dictates the application of 32 waves) DWDM or ultra long single span applications.
the specific module and the Gain values. For example, These high power units are double slot size.
Booster is usually used at the beginning of the line and
therefore Input levels above 0 dBm and Gain of 9 to15 Each module provides visual indications of the front
dB should be expected. On the other hand, Pre-Amplifier panel and can be operated without management as
Input level is very weak (down to –32 dBm/channel) plug and play EDFA.
because it is positioned at the end of the line.
Besides DWDM networks application, LambdaDriver®
Multi-channel (DWDM) amplifiers are equipped with EDFAs can be used in any Single channel application
Gain Flattening Filters (GFF) and provide flat gain thus providing flexible means of extending an optical
response across entire C-band and input power range.
For single channel applications GFF cost is saved.
link by compensating for optical budget loss.
MRV [ MRV COMMUNICATIONS, INC. ]
