Raman amplification

Raman amplifier

Raman amplifier, optical repeater, and raman amplification...

Rare earth doped optical fibre amplifiers

Rare earth element-doped optical fiber amplifier

Rare earth ion doped optical element

Rare earth polymers, optical amplifiers and optical fibers

Rare-earth-doped optical fiber having core co-doped with...

Reconfigurable automatic gain control and method for optical...

Reflective erbium-doped amplifier

Regulated optical amplifier having an optical circulator

Remotely pumping type multi-wavelength light transmission system

Remotely pumping type multi-wavelength light transmission...

Reversible amplifier for optical networks