40-Gb/s return-to-zero alternate-mark-inversion (RZ-AMI) transmission over 2000 km

We report on the transmission of 40-Gb/s alternate-mark-inversion return-to-zero (RZ-AMI) signals over more than 2000 km (20 /spl times/ 100 km) of nonzero dispersion fiber at a bit-error ratio of 10/sup -9/. The RZ-AMI signal is generated using a single, nonreturn-to-zero-driven modulator in combination with an optical delay interferometer. This transmitter allowed for a 40-Gb/s record receiver sensitivity of 78 photons/bit.

[1]  Aaas News,et al.  Book Reviews , 1893, Buffalo Medical and Surgical Journal.

[2]  J.E. Mazo,et al.  Digital communications , 1985, Proceedings of the IEEE.

[3]  H. Toba,et al.  100 GHz-spaced 8/spl times/43 Gbit/s DWDM unrepeatered transmission over 163 km using duobinary-carrier-suppressed return-to-zero format , 2001 .

[4]  S. Chandrasekhar,et al.  40-Gb/s transmission over 2000 km of nonzero-dispersion fiber using 100-km amplifier spacing , 2002, Optical Fiber Communication Conference and Exhibit.

[5]  N. S. Bergano,et al.  Margin measurements in optical amplifier system , 1993, IEEE Photonics Technology Letters.

[6]  J. Conradi,et al.  Reduction of pulse-to-pulse interaction using alternative RZ formats in 40-Gb/s systems , 2002, IEEE Photonics Technology Letters.

[7]  Y. Miyamoto,et al.  S-band 3×120-km DSF transmission of 8×42.7-Gbit/s DWDM duobinary-carrier-suppressed RZ signals generated by novel wideband PM/AM conversion , 2001 .

[8]  Andrew John Stentz,et al.  Experimental verification of SBS suppression by duobinary modulation , 1997 .

[9]  Xiang Liu,et al.  Suppression of intrachannel four-wave-mixing induced ghost pulses in high-speed transmissions by phase inversion between adjacent marker blocks. , 2002, Optics letters.

[10]  J. Leuthold,et al.  Return-to-zero modulator using a single NRZ drive signal and an optical delay interferometer , 2001, IEEE Photonics Technology Letters.

[11]  T. Chikama,et al.  Modulation and demodulation techniques in optical heterodyne PSK transmission systems , 1990 .

[12]  J. C. Imbeaux,et al.  Elements of digital communication , 1991 .