Historical
IEC/TR 61292-3 Ed. 1.0 b:2003
Optical amplifiers - Part 3: Classification, characteristics and applications"
Establishes a family tree for the classification of optical amplifiers, including those still being researched in laboratories, so that their similarities and differences can be readily identified. Also includes a brief description of each amplifier family, highlighting their generic properties, performances and applications at the time of writing.
International Electrotechnical Commission [iec]