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Comparative Study Between the WDM System and the DWDM in an Optical Transmission Link at 40 Gb/s

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Part of the book series: Lecture Notes in Electrical Engineering ((LNEE,volume 522))

Abstract

The WDM multiplexing is explained by the fact that always transmit multiple signals of different colors (or channels) at the same time while avoiding the costs of civil engineering about the stacking of the repeater-regenerators.

The WDM allows to multiply by 16 the capacity of the fiber at the same modulation speed, but each signal has a distinct wavelength, but the DWDM (Dense WDM) makes it possible to multiply by 160 the wavelengths [1]. In this paper we will elaborate a detailed comparative study to extract the performances using the different simulations based on a software system. This paper takes into account the different modulations of the signal in transmission (RZ, NRZ … etc.), the number of channels and the impact of the nonlinear effects on the multiplexing.

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References

  1. ITU-T Recommendation G.694.1, spectral grids for WDM applications: DWDM wavelength grid

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  2. Tianlin, D.: Fiber-Optic Communications and Fiber Optic Information Network. Tsinghua University Press, Beijing (2005). 9

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  3. Furst, C., et al.: Performance limits of nonlinear RZ and NRZ coded transmission at 10 and 40 Gb/s on different fibers. In: OFC 2000 2, WM31-302 (2000)

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  4. Miyamoto, Y., Yonenaga, K., Hirano, A., Tomizawa, M.: Nx40-Gbit/s DWDM transport system using novel return-to-zero formats with modulation bandwidth reduction. IEICE Trans. Commun. E85-B, 374–385 (2002)

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  5. Hayee, M.I., Willner, A.E.: NRZ versus RZ in 10-40-Gb/s dispersion managed WDM transmission systems. IEEE Photon. Technol. Lett. 11, 991–993 (1999)

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Correspondence to Cheikh Kherici .

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Kherici, C., Kandouci, M. (2019). Comparative Study Between the WDM System and the DWDM in an Optical Transmission Link at 40 Gb/s. In: Chadli, M., Bououden, S., Ziani, S., Zelinka, I. (eds) Advanced Control Engineering Methods in Electrical Engineering Systems. ICEECA 2017. Lecture Notes in Electrical Engineering, vol 522. Springer, Cham. https://doi.org/10.1007/978-3-319-97816-1_37

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