Abstract

We analyzed the mechanism of the interplay between PDL and fiber nonlinear effects in 112Gb/s DP-QPSK systems and showed that PDL can generate large data-dependent optical peak power variations that can worsen nonlinear tolerance and cause an additional 1.4dB Q-penalty.

© 2011 OSA

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References

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  1. O. Vassilieva, T. Hoshida, X. Wang, J. Rasmussen, H. Miyata, and T. Naito, “Impact of Polarization Dependent Loss and Cross-Phase Modulation on Polarization Multiplexed DQPSK Signals,” in Proceedings of IEEE Conference on Optical Fiber Communications (Institute of Electrical and Electronics Engineers, San Diego, 2008), paper OThU6 (2008).
  2. T. Duthel, C. R. S. Fludger, J. Geyer, and C. Schulien, “Impact of Polarization Dependent Loss on Coherent POLMUX-NRZ-DQPSK,” in Proceedings of IEEE Conference on Optical Fiber Communications, (Institute of Electrical and Electronics Engineers, San Diego, 2008), paper OThU5 (2008).
  3. C. Xie, “Polarization-Dependent Loss Induced Penalties in PDM-QPSK Coherent Optical Communication Systems,” in Proceedings of IEEE Conference on Optical Fiber Communications (Institute of Electrical and Electronics Engineers, San Diego, 2010), paper OWE6 (2010).
  4. O. Vassilieva, I. Kim, and T. Naito, “Systematic Investigation of Interplay between Nonlinear and Polarization Dependent Loss Effects in Coherent Polarization Multiplexed Systems,” in Proceedings of ECOC’2010, Torino, Italy, paper P4.08 (2010).
  5. C. R. Menyuk and B. S. Marks, “Interaction of Polarization Mode Dispersion and Nonlinearity in Optical Fiber Transmission Systems,” J. Lightwave Technol. 24(7), 2806–2826 (2006).
    [CrossRef]

2006 (1)

J. Lightwave Technol. (1)

Other (4)

O. Vassilieva, T. Hoshida, X. Wang, J. Rasmussen, H. Miyata, and T. Naito, “Impact of Polarization Dependent Loss and Cross-Phase Modulation on Polarization Multiplexed DQPSK Signals,” in Proceedings of IEEE Conference on Optical Fiber Communications (Institute of Electrical and Electronics Engineers, San Diego, 2008), paper OThU6 (2008).

T. Duthel, C. R. S. Fludger, J. Geyer, and C. Schulien, “Impact of Polarization Dependent Loss on Coherent POLMUX-NRZ-DQPSK,” in Proceedings of IEEE Conference on Optical Fiber Communications, (Institute of Electrical and Electronics Engineers, San Diego, 2008), paper OThU5 (2008).

C. Xie, “Polarization-Dependent Loss Induced Penalties in PDM-QPSK Coherent Optical Communication Systems,” in Proceedings of IEEE Conference on Optical Fiber Communications (Institute of Electrical and Electronics Engineers, San Diego, 2010), paper OWE6 (2010).

O. Vassilieva, I. Kim, and T. Naito, “Systematic Investigation of Interplay between Nonlinear and Polarization Dependent Loss Effects in Coherent Polarization Multiplexed Systems,” in Proceedings of ECOC’2010, Torino, Italy, paper P4.08 (2010).

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Figures (6)

Fig. 1
Fig. 1

Simulation model.

Fig. 2
Fig. 2

Q-penalty for the case when signal and PDL axes are aligned: (a) dependency on PDL value for PDL-only case, (b) dependency of each polarization component on fiber input power for mean PDL = 4dB, (c) dependency of the total signal on fiber input power for PDL = 0, 2, 4 and 6dB.

Fig. 3
Fig. 3

PDL induced loss of orthogonality and generated polarization crosstalk for the case when signal is rotated by 45 degrees with respect to the PDL axes: (a) counter-clockwise and (b) clockwise.

Fig. 4
Fig. 4

Optical waveforms for the case when signal and PDL axes are aligned at (a) 0 deg (left), (b) 45deg (right).

Fig. 5
Fig. 5

Q-penalty dependency on: (a) angle between signal and PDL axes, (b) PDL values for 0deg and 45deg angle.

Fig. 6
Fig. 6

Q-penalty dependency on fiber input power for 0deg and 45deg angle.

Tables (1)

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Table 1 Simulation parameters

Equations (3)

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U(z,t)=| Ux Uy |=| cosθ sinθ sinθ cosθ || 1+η 0 0 1η || cosθ sinθ sinθ cosθ || Ex Ey |
| U | 2 = | Ex | 2 + | Ey | 2 +ηcos2θ( | Ex | 2 | Ey | 2 )+2ηsin2θ| Ex || Ey |
U z +j β 2 2 2 U 2 t j 8 9 γ | U | 2 U=0,

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