Per-symbol-based digital back-propagation approach for PDM-CO-OFDM transmission systems

doi:10.1364/OE.21.001547

Per-symbol-based digital back-propagation approach for PDM-CO-OFDM transmission systems

Wei-Ren Peng, Hidenori Takahashi, Itsuro Morita, and Takehiro Tsuritani »View Author Affiliations

Optics Express, Vol. 21, Issue 2, pp. 1547-1554 (2013)
http://dx.doi.org/10.1364/OE.21.001547

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Abstract

For polarization-division-multiplexing coherent optical orthogonal frequency division multiplexing (PDM-CO-OFDM) systems, we propose a per-symbol-based digital back-propagation (DBP) approach which, after cyclic prefix removal, conducts DBP for each OFDM symbol. Compared with previous DBP, this new proposal avoids the use of inefficient overlap-and-add operation and saves one fast Fourier transform (FFT) module, therefore simplifying the hardware implementation. Transmitting a 16-QAM, 42.8-Gb/s PDM-CO-OFDM signal over 960-km standard single mode fiber (SSMF), we compare the previous and the proposed DBP approaches with different receiver’s sampling rates and different step lengths in each DBP iteration, and found that the proposed DBP can achieve a similar performance as that of the previous DBP while enjoying a simpler implementation. We have also specifically introduced a small self-phase modulation (SPM) model for DBP and demonstrated its feasibility with the same experimental setup.

OCIS Codes
(060.2330) Fiber optics and optical communications : Fiber optics communications
(060.2360) Fiber optics and optical communications : Fiber optics links and subsystems
(060.4080) Fiber optics and optical communications : Modulation

ToC Category:
Subsystems for Optical Networks

History
Original Manuscript: October 2, 2012
Revised Manuscript: December 3, 2012
Manuscript Accepted: December 3, 2012
Published: January 15, 2013

Virtual Issues
European Conference on Optical Communication 2012 (2012) Optics Express

Citation
Wei-Ren Peng, Hidenori Takahashi, Itsuro Morita, and Takehiro Tsuritani, "Per-symbol-based digital back-propagation approach for PDM-CO-OFDM transmission systems," Opt. Express 21, 1547-1554 (2013)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-21-2-1547

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References

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