Radiation power equalizer
Raman amplification repeater
Raman amplifier, optical repeater, and raman amplification...
Raman amplifiers with improved signal power management
Reducing noise in a fiber amplifier using a cleaning optical...
Reduction of ASE in WDM optical ring networks
Reduction of ASE in WDM optical ring networks
Regulated optical amplifier
Retrofit heater for erbium fiber in an erbium-doped fiber amplif
Robust multi-wavelength optical fiber communication systems