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How to Choose the Right EDFA for FTTH system  
 

How to Choose the Right EDFA

EDFA

First of all, you should make sure the network type in which you need to use EDFA. Depending on the network application, EDFA are generally designed into the following types:

  • DWDM EDFA: for this type of network, EDFA needs to be not only high power low noise, but also gain flattened such that all wavelength channels can be amplified equally.
  • SDH EDFA: For SDH network, EDFA design should allow maximum power budget to achieve the highest detection sensitivity.
  • CATV EDFA: There is also EDFA designed for CATV application, which has low noise with heat dissipation and ventilation in mind to ensure a long operation life.

Some other important elements should be considered before selecting EDFAs.

  • Wavelengths: you should make certain how many wavelengths will go through the EDFA and the beginning and ending wavelengths, for example 1530 to 1562 nm. For single wavelength link, you should know clearly the exact wavelength.
  • Power or loss budget: the budget tells us how much amplification you require for the whole link.
  • The location of EDFAs: After the transmitter, before the receiver, or in the mid-span.
  • WDM EDFAEDFA OPTICAL AMPLIFIER

 
 
 
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