Chinese Optics Letters, Volume. 3, Issue 10, 10570(2005)
Low pump power co-fiber remotely pumped EDFA used in DWDM systems with ultra-long fiber span
In this paper, aiming at practical dense wavelength division multiplexing (DWDM) system with ultra-long fiber span, a simple co-fiber remotely pumped erbium-doped fiber amplifier (RP-EDFA) scheme is proposed to extend span distance with simple configuration and low pump power. Equivalent noise figure of -6 dB is achieved under 300-mW pump power. Using the experiment results, numerical simulation of ultra-long span systems shows that for a 40*11.6-Gb/s transmission system, the RP-EDFA scheme can support transmission of 1760 km with a fiber span of 160 km. These results demonstrate the potential of the PR-EDFA scheme in ultra-long span transmission.
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Fan Zhang, Wei Zhang, Yan Wang, Jiangde Peng. Low pump power co-fiber remotely pumped EDFA used in DWDM systems with ultra-long fiber span[J]. Chinese Optics Letters, 2005, 3(10): 10570
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