Design and performance evaluation of an OpenFlow-based control plane for software-defined elastic optical networks with direct-detection optical OFDM (DDO-OFDM) transmission

In direct-detection optical OFDM system, the nonlinear impairment is the key factor that limits the system performance. The back-propagation techniques in digital and optical domains have been proposed to compensate the nonlinear effects, however they can be unsuitable for long-range passive optical networks (LR-PONs) due to their implementation at receiver. In this study, we propose an optical back propagation (OBP) approach for compensation of the nonlinear and dispersion distortions in direct-detection optical OFDM system. The proposed OBP using split-step Fourier method is implemented at transmitter that is suitable for high-rate OFDM-based LR-PONs applications. In this OBP, the fiber Bragg grating (FBG) is used as a step for dispersion compensation and the high-nonlinear fiber (HNLF) with a short length is used as a step for nonlinear compensation. The performance improvement based on our proposed approach has been demonstrated via Monte-Carlo simulations of the 100 Gbit/s direct-detection optical OFDM system with 80 km of standard single mode fiber link. The influence of optical conjugation process and launching conditions has been investigated. The obtained results show that the proposed OBP can improve remarkably the performance of system with the launched power range from -2 dBm to 6 dBm.

Download Full-text

A novel node architecture for optical networks: Modeling, analysis and performance evaluation

Computer Communications ◽

10.1016/j.comcom.2006.08.023 ◽

2007 ◽

Vol 30 (5) ◽

pp. 999-1014 ◽

Cited By ~ 16

Author(s):

A. Lazzez ◽

Y. Khlifi ◽

S. Guemara El Fatmi ◽

N. Boudriga ◽

M.S. Obaidat

Keyword(s):

Performance Evaluation ◽

Optical Networks ◽

Modeling Analysis ◽

Node Architecture ◽

And Performance

Download Full-text

Comparison and Analysis of DCO-OFDM, ACO-OFDM and ADO-OFDM in IM/DD Systems

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.701-702.1059 ◽

2014 ◽

Vol 701-702 ◽

pp. 1059-1062 ◽

Cited By ~ 2

Author(s):

Xu Zhang ◽

Yu Fang Zhou ◽

Yin Peng Yu ◽

Peng Chao Han ◽

Xiao Rui Wang

Keyword(s):

Optical Communication ◽

Orthogonal Frequency Division Multiplexing ◽

Direct Detection ◽

Optical Power ◽

Frequency Division ◽

Optical Efficiency ◽

Power Efficient ◽

Optical Ofdm ◽

And Performance ◽

Ofdm Signals

As a promising modulation technology for optical communication, Orthogonal Frequency Division Multiplexing (OFDM) is now increasingly used and a lot of ways of improving the optical efficiency of Intensity Modulated/ Direct Detection (IM/DD) systems have been proposed. And real and non-negative OFDM signals are required in this kind of system. Asymmetrically clipped DC biased Optical OFDM (DCO-OFDM), Asymmetrically Clipped Optical OFDM (ACO-OFDM) and Asymmetrically clipped DC biased Optical OFDM (ADO-OFDM) can satisfy this requirement. In this paper, we analysis the properties and performance orderly of the above three systems and simultaneously compare their performance. The simulation results show that DCO-OFDM is efficient in terms of bandwidth while the ACO-OFDM is efficient in terms of optical power. More importantly, ADO-OFDM is both power-efficient and bandwidth-efficient. At the same time, a developmentally proposal for the future OFDM in IM/DD systems is put forward.

Download Full-text