We have designed and experimentally characterized an erbium-doped fiber amplifier (EDFA) which possesses a wavelength-independent gain spectrum, independent of the operating level of the gain (dynamic gain flatness), and without requiring any gain-level-dependent control of any parameters, In the wavelength range 1542-1552 nm, the gain was hat to within the experimental uncertainties of +/-0.3 dB even as the gain level changed by 17 dB. The EDFA was based on a low-Al-content alumino-germanosilicate EDF and a Mach-Zehnder filter. We believe that this type of EDFA, which has not been demonstrated before, can significantly simplify the design of amplified wavelength-division multiplexing (WDM) transmission systems and increase the robustness of long-distance WDM transmission.
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Univ Southampton, Optoelect Res Ctr, Southampton SO17 1BJ, EnglandUniv Southampton, Optoelect Res Ctr, Southampton SO17 1BJ, England
Huang, Xin
Liang, Sijing
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Univ Southampton, Optoelect Res Ctr, Southampton SO17 1BJ, EnglandUniv Southampton, Optoelect Res Ctr, Southampton SO17 1BJ, England
Liang, Sijing
Xu, Lin
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Univ Southampton, Optoelect Res Ctr, Southampton SO17 1BJ, EnglandUniv Southampton, Optoelect Res Ctr, Southampton SO17 1BJ, England
Xu, Lin
Richardson, David J.
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Univ Southampton, Optoelect Res Ctr, Southampton SO17 1BJ, England
Microsoft Lumenisity, Romsey SO51 9DL, EnglandUniv Southampton, Optoelect Res Ctr, Southampton SO17 1BJ, England
Richardson, David J.
Jung, Yongmin
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Univ Southampton, Optoelect Res Ctr, Southampton SO17 1BJ, EnglandUniv Southampton, Optoelect Res Ctr, Southampton SO17 1BJ, England