Cost-Effective Transition to 40 Gb/s Line Rate Using the Existing 10 Gb/s-Based DWDM Infrastructure

ETRI Journal

关键词: optical signal-to-noise ratio;    forward error correction;    modulation format;    Q-value;    optical link;    40 Gb/s;    Optical communications;   

Others  :  1185699
DOI  :  10.4218/etrij.08.1107.0036

【 摘 要 】

In this paper, we propose and demonstrate a cost-effective technique to upgrade the capacity of dense wavelength division multiplexing (DWDM) networks to a 40 Gb/s line rate using the existing 10 Gb/s-based infrastructure. To accommodate40 Gb/s over the link optimized for 10 Gb/s, we propose applying a combination of super-FEC, carrier-suppressed return-to-zero, and pre-emphasis to the 40 Gb/s transponder. The transmission of 40 Gb/s DWDM channels over existing 10 Gb/s line-rate long-haul DWDM links, including 40×40 Gb/s transmission over KT’s standard single-mode fiber optimized for 10 Gb/s achieves successful results. The proposed upgrading technique allows the Q-value margin for a 40 Gb/s line rate to be compatible with that of 10 Gb/s.

   

【 参考文献 】

• [1]W. Bogner, E. Gottwald, A. Schopflin, and C.-J. Weiske, "40-Gb/s Unrepeatered Optical Transmission over 148 km by Electrical Time-Division Multiplexing and De-multiplexing,"Electron. Lett., vol. 33, 1997, pp. 2136-2137.
• [2]Y. Miyamoto, A. Hirano, K. Yonenaga, A. Sano, H. Toba, K. Murata, and O. Mitomi, "320-Gbit/s (8×40 Gbit/s) WDM Transmission over 367-km Zero-Dispersion-Flattened Line with 120-km Repeater Spacing Using Carrier-Suppressed Return-to-Zero Pulse Format,"Tech
• [3]B. Zhu et al., "Transmission of 3.2 Tb/s (80×42.7 Gb/s) over 5200 km of UltrawaveTM Fiber with 100-km Dispersion-Managed Spans Using RZ-DPSK Format,"Technical Digest of European Conf. on Optical Comm., 2002, postdeadline paper 4.2.
• [4]H. Bissessur, G. Charlet, W. Idler, C. Simonneau, S. Borne, L. Pierrle, R. Dischler, C. De Barros, and P. Tran, "3.2 Tbit/s (80×40 Gbit/s) Phase-Shaped Binary Transmission over 3×100 km with 0.8 bit/s/Hz Efficiency,"Electon. Lett., vol. 38, no. 8, 2002,
• [5]F. Liu et al., "1.6 Tbit/s (40×42.7 Gbit/s) Transmission over 3,600 km UltraWaveTM Fiber with All-Raman Amplified 100 km Terrestrial Spans Using ETDM Transmitter and Receiver,"Technical Digest of Optical Fiber Comm., 2002, postdeadline paper FC7.
• [6]Y. Frignac, G. Charlet, W. Idler, R. Dischier, P. Tran, S. Lanne, S. Borne, C. Martinelli, G. Veith, A. Jourdan, J.-P. Hamaide, and S. Bigo, "Transmission of 256 Wavelength-Division and Polarization-Division-Multiplexed Channels at 42.7Gb/s (10.2 Tb/s Cap
• [7]A. Agrawal, S. Banerjee, D.F. Grosz, A.P. Kung, D.N. Maywar, and T.H. Wood, "Ultra-longhaul Transmission of 40-Gb/s RZ-DPSK in a 10/40 G Hybrid over 2500 km of NZ-DSF,"IEEE Photon. Technol. Lett., vol. 15, no. 12, Dec. 2003, pp. 1779-1781.
• [8]H. Bissessur, A. Hugbart, S. Ruggeri, and C. Bastide, "40 G over 10 G Infrastructure: Dispersion Management Issues,"Technical Diget of Optical Fiber Comm., 2005, paper OFF5.
• [9]S.S. Lee, J.S. Han, H.W. Cho, S.K. Lim, H.J. Lee, C.B. Kim, and J.S. Ko, "Capacity Upgrade to a 40-Gb/s Channel Rate Using Reconfigurable Optical Add-Drop Multiplexing Operation in 32×10-Gb/s-Based Repeaterless Mixed Fiber Link,"Opt. Eng. vol. 45, no. 10
• [10]ITU-T recommendation G.975.1, "Forward Error Correction for High Bit-Rate DWDM Submarine Systems,"2004.
• [11]Y.H. Kwon, J.S. Choe, J.H. Kim, K.S. Kim, K.S. Choi, B.S. Choi, and H.G. Yun, Fabrication of 40 Gb/s Front-End Optical Receivers Using Spot-Size Converter Integrated Waveguide Photodiodes,"ETRI Journal, vol. 27, no. 5, Oct. 2005, pp. 484-490.
• [12]M. Nissov, J.-X. Cai, A.N. Pilipetskii, Y. Cai, C.R. Davidson, A. Lucero, and N.S. Bergano, "Q-Factor Fluctuation in Long Distance Circulating Loop Transmission Experiments,"Technical Digest of Optical Fiber Comm., 2004, paper FM6.