Ultra-High Capacity DWDM System using Different Intensity Modulation Formats
AbstractDense Wavelength Division Multiplexing (DWDM) communication system is an all optical network technology that transmit information by sending light pulse through a single mode fiber. Proposed technology can increase the capacity and bandwidth of optical network. DWDM system consists of different passive and active components such as transponders, fibers, passive optical filters, and an optical amplifier. In this paper an ultra-high capacity 64-channel DWDM system with intensity modulations such as two methods of duo-binary modulation at different bit rates of 10, 20 and 40 Gbps for a coverage distance of 1500 km and more is designed and simulated. Also, the transmission parameters of proposed system is optimized to achieve the Max quality factor. Results shows for proposed system with ultra-high capacity, the first method of duo-binary modulation has good performance than other modulations such as second duo-binary method and conventional modulation formats that used in optical network. The performance of the presented system is evaluated in the final arrangement by means of Bit Error Rate (BER) and Optical Signal-to-Noise Ratio (OSNR) measurements.
2. R. Ali, M. S. Ali, T. Mir, B. Shabir, “Analytic review of advance optical modulation formats,” Electrical and Electronics Engineering,” An International Journal (ELELIJ) Vol.4, pp.743-749, Feb. 2015.
3. A. Aloisio, F. Ameli, A. D’Amico, R. Giordano, G. Giovanetti, and V. Izzo, “Performance Analysis of a DWDM Optical Transmission System,” IEEE transactions on nuclear science, VOL. 59, pp.251-255, Apr. 2012.
4. J. Choudhary, L. Singh, R. S. Shahi “Comparative analysis of DWDM system using different modulation and dispersion compensation techniques at different bit rates,” International Journal of Advanced Research in Computer and Communication Engineering, Vol. 3, pp.6512-6518, May. 2014.
5. X. S. Cheng, R. Parvizi, H. Ahmad and S. W. Harun “Wide-band Bismuth-based Erbium-doped fiber amplifier with a flat-gain characteristic”, IEEE Photonics Journal, Vol. 1, pp. 259-264, Nov. 2009.
6. A. Agarwal, S. K. Sharma, “Performance Comparison of Single & Hybrid Optical Amplifiers for DWDM System Using Optisystem,” IOSR Journal of Electronics and Communication Engineering IOSR-JECE, Vol. 9, PP. 28-33, Feb. 2014.
7. B. Patnaik, P.K. Sahu, “Ultra high capacity 1.28 Tbps DWDM system design and simulation using optimized modulation format,” Optik - International Journal for Light and Electron Optics, Vol. 124, pp. 1567–1573, Jul. 2013.
8. S. Pazi, C. Chatwin, R. Young, P. Birch, W. Wang, “Performance of Tanzanian optical DWDM system,” Eur. J. Sci. Res. Vol. 36, pp. 606–626, 2009.
9. S. P. Singh and N. Singh “nonlinear effects in optical fiber, origin, management and application,” progress in Electromagnetics Research, Vol. 73, pp.249-275, Mar. 2007.
10. K. Xu and Y. Ou, “Theoretical and numerical characterization of a 40Gbps long-haul multi-channel transmission system with dispersion compensation,” DCN, Vol. 1, pp. 222-228, Aug. 2015.
11. Gh. A. Mahdiraji and A. F. Abas, “Advanced Modulation Formats and Multiplexing Techniques for Optical Telecommunication Systems,” Trends in Telecommunications Technologies, pp.14-38, Mar 2010.
12. S. Jawla, “intensity modulation formats in optical communication system,” International Journal of Scientific & Engineering Research, Vol. 4, pp. 584-589, Dec. 2013.
13. “Introduction to DWDM technology,” cisco system. Lnc, San Jose, USA, 2001.
14. A. Singh , “Modulation Formats for High-Speed, Long-Haul Fiber Optic Communication Systems,” Inphi Corporation.