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Photonics Research

Photonics Research

| A joint OSA/Chinese Laser Press publication

  • Editor: Zhiping (James) Zhou
  • Vol. 1, Iss. 3 — Oct. 1, 2013
  • pp: 130–135

Scalable nonlinear equalization in high-bit-rate optical transmission systems

Rameez Asif, Humayun Shahid, Farzana Arshad, and Rashid Saleem  »View Author Affiliations

Photonics Research, Vol. 1, Issue 3, pp. 130-135 (2013)

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In this paper, we report on the performance comparison of all-optical signal processing methodologies to compensate fiber transmission impairments, namely chromatic dispersion and nonlinear distortion caused by the Kerr effect, in a coherent 112 Gbit / s dual-polarization 64 bit quadrature amplitude modulation system over 800 km standard single-mode fiber. We numerically compare optical backward propagation (OBP) with optical phase conjugation (OPC) techniques, namely. mid-link spectral inversion, predispersed spectral inversion, and OPC with nonlinearity module. We also evaluate a self-phase-modulation-based optical limiter with an appropriate prechirping to compensate for the intensity fluctuations as a hybrid approach with OBP. The results depict improvement in system performance by a factor of 4 dB of signal input power by all-optical signal processing methods, which is comparative with ideal digital backward propagation where the high complexity is the intrinsic impediment in the real-time implementation of the technique with coherent receivers.

© 2013 Chinese Laser Press

OCIS Codes
(060.1660) Fiber optics and optical communications : Coherent communications
(060.2310) Fiber optics and optical communications : Fiber optics
(060.2330) Fiber optics and optical communications : Fiber optics communications
(060.4250) Fiber optics and optical communications : Networks

ToC Category:
Optical Communications

Original Manuscript: January 22, 2013
Revised Manuscript: March 6, 2013
Manuscript Accepted: March 14, 2013
Published: September 30, 2013

Rameez Asif, Humayun Shahid, Farzana Arshad, and Rashid Saleem, "Scalable nonlinear equalization in high-bit-rate optical transmission systems," Photon. Res. 1, 130-135 (2013)

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