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2. Optical Fiber Amplifiers for WDM Optical Networks;Sun;Bell Labs. Tech. J.,1999
3. Low noise erbium-doped fiber amplifier operating at 1.54 μm;Mears;Electron. Lett.,1987
4. High gain erbium-doped traveling wave fiber amplifier;Desurvire;Optics Letters,1987
5. 1 Tb/s transmission of 100 WDM 10 Gb/s channels over 400 km of True WaveTM fiber;Srivastava,1998