Three key applications appear to be driving the development of new amplifier technologies:
- All-optical crossconnects. These require amplifiers to compensate for losses in the optical signal as it traverses the switching fabric.
- Pre-amplification. When amplifiers are used to boost the sensitivity of receivers, the system loss budget can be maintained when networks are upgraded from 2.5 to 10 Gbit/s.
- "Banded" amplification. This term refers to amplifying channels in groups rather than all together.
Here's a summary of recent developments in optical amplifiers:
Erbium Doped-Fiber Amplifiers (EDFAs)
Ericsson Intros Laser, Amp
IPG Unveils Amp, Test Source
Keopsys Launches EDFA
Onetta Announces Metro EDFA
Erbium-Doped Waveguide Amplifiers (EDWAs)
Semiconductor Optical Amplifiers (SOAs)
— Pauline Rigby, Senior Editor, Light Reading
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