Abstract
A simple gain-flattened L-band erbium-doped fiber amplifier (EDFA) is demonstrated, utilizing unwanted C-band amplified spontaneous emission (ASE) to enhance L-band gain performance. An L-band flat gain range of 50 nm (1560–1610 nm) is achieved for use in wavelength-division multiplexing (WDM) transmission systems. Gain flatness with a 3 dB gain discrepancy is obtained through manipulation of the pump power. © 2001 John Wiley & Sons, Inc. Microwave Opt Technol Lett 28: 399–402, 2001.
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