Optical Amplifier and Regenerator both deal with increasing the signal power. Here is the difference between two:
|Increases the optical power of signal||New signal is generated|
|It is an all optical process i.e. optical signal is not converted to electrical||It is an Optical-Electrical-Optical process. The reason it involves electronics is that building an all optical generator capable of deciding what is signal and what is noise is difficult. It’s a three stage process:1)Reshaping = > O-E 2) Re-amplification => Optical 3) Retiming => O-E|
|Multiplexed signals can be amplified together||Operates on single channel of data|
|No upgrades required with frequency upgrade||High frequency upgrades requires regenerator upgrades|
|Introduces noise||Removes noise|
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