Absolute polar duty cycle division multiplexing over wavelength division multiplexing system

The performance of absolute polar duty cycle division multiplexing (AP-DCDM) over wavelength division multiplexing (WDM) system is presented based on the simulation results. The AP-DCDM signal has narrower bandwidth than conventional time division multiplexing (TDM) signal, which makes its implementation in WDM system advantageous. In this paper, characteristics of AP-DCDM and TDM signals in WDM system are compared at the speed of 40 Gbit/s per channel, for the minimum allowed channel spacing and the chromatic dispersion tolerance. The results clearly show that AP-DCDM performs significantly better than TDM. By using AP-DCDM, 1.28 Tbit/s (32 × 40 Gbit/s) was successfully transmitted over 320 km standard single mode fiber. Spectral efficiency of 0.64 b/s/Hz was achieved by using 10 Gbit/s transmitters and receivers without polarization multiplexing.

[1]  Min Zhang,et al.  Analysis of 160 Gb/s all-optical NRZ-to-RZ data format conversion using quantum-dot semiconductor optical amplifiers assisted Mach-Zehnder interferometer , 2009 .

[2]  I. Morita,et al.  70-GHz-spaced 40/spl times/42.7 Gb/s transpacific transmission over 9400 km using prefiltered CSRZ-DPSK signals, all-Raman repeaters, and symmetrically dispersion-managed fiber spans , 2004, Journal of Lightwave Technology.

[3]  A. F. Elrefaie,et al.  Effect of chirping-induced waveform distortion on the performance of direct detection receivers using traveling-wave semiconductor optical preamplifiers , 1991 .

[4]  K. Petermann,et al.  Comparison of NRZ- and RZ-modulation format for 40-Gb/s TDM standard-fiber systems , 1997, IEEE Photonics Technology Letters.

[5]  Ming Tang,et al.  Experimental demonstration of polarization multiplexing for simultaneously providing broadband wireless and wired access , 2008 .

[6]  T. S. Kamal,et al.  Investigation on modified FWM suppression methods in DWDM optical communication system , 2009 .

[7]  R.-J. Essiambre,et al.  Advanced Modulation Formats for High-Capacity Optical Transport Networks , 2006, Journal of Lightwave Technology.

[8]  Lin Chen,et al.  Novel optical orthogonally modulation scheme for superimposing DPSK signals on dark RZ signals , 2008 .

[9]  Chi-Wai Chow,et al.  Signal remodulation without power sacrifice for carrier distributed hybrid WDM-TDM PONs using PolSK , 2009 .

[10]  N. Avlonitis,et al.  Multilevel amplitude shift keying in dispersion uncompensated optical systems , 2006 .

[11]  Mohamad Khazani Abdullah,et al.  Realization of high capacity transmission in fiber optic communication systems using absolute polar duty cycle division multiplexing (AP-DCDM) technique , 2009 .

[12]  Adolfo V. T. Cartaxo,et al.  Gaussian approach for performance evaluation of optically preamplified receivers with arbitrary optical and electrical filters , 2001 .

[13]  Ahmad Fauzi Abas,et al.  100 km fiber span in 292 km, 2.38 Tb/s (16×160Gb/s) WDM DQPSK polarization division multiplex transmission experiment without Raman amplification , 2007 .

[14]  Hideo Kuwahara,et al.  Optimal 40 Gb/s modulation formats for spectrally efficient long-haul DWDM systems , 2002 .

[15]  Katsumi Emura,et al.  Characteristics of optical duobinary signals in terabit/s capacity, high-spectral efficiency WDM systems , 1998 .

[16]  Proposal and realization for a broadband all-fiber non-uniformly spaced multi-channel optical filter , 2009 .