Sang Soo Lee, Sang-Kyu Lim, Hyunwoo Cho, Kwangjoon Kim, J. Ko
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40 Gb/s transmission over the existing 10 Gb/s based DWDM network infrastructure
The capacity upgrading techniques to 40 Gb/s channel rate using the existing N times 10 Gb/s based DWDM infrastructure were studied. The super-FEC, carrier- suppressed return-to-zero and pre-emphasis were applied to 40 Gb/s channels for improvement in optical signal to noise ratio sensitivity.