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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 25 — Dec. 3, 2012
  • pp: 27740–27755

Analytical modeling of a single channel nonlinear fiber optic system based on QPSK

Shiva Kumar, Sina Naderi Shahi, and Dong Yang  »View Author Affiliations

Optics Express, Vol. 20, Issue 25, pp. 27740-27755 (2012)

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A first order perturbation theory is used to develop analytical expressions for the power spectral density (PSD) of the nonlinear distortions due to intra-channel four-wave mixing (IFWM). For non-Gaussian pulses, the PSD can not be calculated analytically. However, using the stationary phase approximations, we found that convolutions become simple multiplications and a simple analytical expression for the PSD of the nonlinear distortion is found. The PSD of the nonlinear distortion is combined with the amplified spontaneous emission (ASE) PSD to obtain the total variance and bit error ratio (BER). The analytically estimated BER is found to be in good agreement with numerical simulations.

© 2012 OSA

OCIS Codes
(060.1660) Fiber optics and optical communications : Coherent communications
(060.4370) Fiber optics and optical communications : Nonlinear optics, fibers

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: August 21, 2012
Revised Manuscript: November 12, 2012
Manuscript Accepted: November 15, 2012
Published: November 29, 2012

Shiva Kumar, Sina Naderi Shahi, and Dong Yang, "Analytical modeling of a single channel nonlinear fiber optic system based on QPSK," Opt. Express 20, 27740-27755 (2012)

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