Electronic dispersion compensation for high speed long haul transmission with DQPSK modulation

Li Lu; Jianming Lei; Xuncheng Luo; Linlin Bing

doi:10.1117/12.843355

26 October 2009 Electronic dispersion compensation for high speed long haul transmission with DQPSK modulation

Li Lu, Jianming Lei, Xuncheng Luo, Linlin Bing

Proceedings Volume 7516, Photonics and Optoelectronics Meetings (POEM) 2009: Optoelectronic Devices and Integration; 751604 (2009) https://doi.org/10.1117/12.843355
Event: Photonics and Optoelectronics Meetings 2009, 2009, Wuhan, China

Abstract

The applications of Electronic Dispersion Compensation (EDC) have recently attracted attention for high speed long haul transmission. Moreover, recent progress in signal formats has gained interest in recent years such as Differential Quadrature Phase Modulation (DQPSK). This format has higher spectral efficiency and reduced symbol rate compared to binary modulation compared to binary modulation formats. In this paper, we investigate the application of different EDC schemes with DQPSK format against chromatic dispersion (CD). The schemes are nonlinear feed-forward equalizer (FFE) and Decision-Feedback equalizer (DFE) and butterfly FFE-DFE. We demonstrate that butterfly structure can mitigates nonlinearity of cross-coupling because of processing two DPQSK tributaries independently. A 40 Gb/s simulated transmission system over 160km length is established. Simulation results show that butterfly FFE-DFE has better performance than separate FFE-DFE.

Citation Download Citation

Li Lu, Jianming Lei, Xuncheng Luo, and Linlin Bing "Electronic dispersion compensation for high speed long haul transmission with DQPSK modulation", Proc. SPIE 7516, Photonics and Optoelectronics Meetings (POEM) 2009: Optoelectronic Devices and Integration, 751604 (26 October 2009); https://doi.org/10.1117/12.843355

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KEYWORDS

Modulation

Binary data

Tolerancing

Dispersion

Optical filters

Single mode fibers

Linear filtering

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