ICTACT Journal on Communication Technology

Open Access Open Access  Restricted Access Subscription Access
Open Access Open Access Open Access  Restricted Access Restricted Access Subscription Access

Investigation on Hybrid WDM (DWDM+CWDM) Free Space Optical Communication System


Affiliations
1 Department of Electronics and Communication Engineering, Mount Zion College of Engineering and Technology, India
     

   Subscribe/Renew Journal


Free Space Optical (FSO) communication is being realized as an effective solution for future accessing networks, offering light passed through air. The performance of FSO can be primarily degraded by various atmospheric attenuation namely, rain, fog, haze and snow. At present, hybridization of Dense Wavelength Division Multiplexing (DWDM) with Coarse Wavelength Division Multiplexing (CWDM) becomes necessary to scale the speed and high bandwidth of the services. In this paper, hybrid WDM system is proposed, designed and the network parameters such as Bit Error Rate (BER), Quality Factor and receiver sensitivity are analyzed with respect to link distance for various weather conditions. For investigation, 4 CWDM and 8 DWDM channels are considered whose corresponding channel spacing is 20nm and 0.8nm, respectively. From the simulation, it is investigated that the average link distance of proposed hybrid WDM-FSO system for DWDM and CWDM system at very clear condition are around 810km and 780km. The proposed hybrid WDM based FSO system is designed to handle the quality of transmission for 12 users, each at a data rate of 2.5Gbps.

Keywords

FSO, Hybrid WDM, CWDM, DWDM, BER.
Subscription Login to verify subscription
User
Notifications
Font Size

  • M.A. Khalighi and M. Uysal, “Survey on Free Space Optical Communication: A Communication Theory Perspective”, IEEE Communications Surveys & Tutorials, Vol. 16, No. 4, pp. 2231-2258, 2014.

  • S.A. Al-Gailani, A.B. Mohammad and R.Q. Shaddad, “Evaluation of a 1 Gb/s Free Space Optic System in Typical Malaysian Weather”, Proceedings of IEEE 3rd International Conference on Photonics, pp. 121-124, 2012.

  • A. Mahdy and J.S. Deogun, “Wireless Optical Communications: A Survey”, Proceedings of IEEE Wireless Communications and Networking Conference, Vol. 4, pp. 2399- 2404, 2004.

  • G. Nykolak, P.F. Szajowski, G. Tourgee and H. Presby. “2.5Gbit/s Free Space Optical Link over 4.4km”, Electronic Letters, Vol. 35, No. 7, pp. 578-579, 1999.

  • A. Ramezani, M.R. Noroozi and M. Aghababaee, “Analyzing Free Space Optical Communication Performance”, International Journal of Engineering and Advanced Technology, Vol. 4, No. 1, pp. 46-51, 2014.

  • Scott Bloom, Eric Korevaar, John Schuster and Heinz Willebrand, “Understanding the Performance of Free Space Optics”, Journal of Optical Networking. Vol. 2, No. 6, pp. 178-200, 2003.

  • Jitendra Singh and Naresh Kumar, “Performance Analysis of Different Modulation Format on Free Space Optical Communication System”, Optik - International Journal of Light and Electron Optics, Vol. 124, No. 20, pp. 4651-4654, 2013.

  • Antonio García-Zambrana, Carmen Castillo-Vázquez and Beatriz Castillo-Vázquez, “Rate-Adaptive Free-Space Optical Links over Atmospheric Turbulence and Misalignment Fading Channels”, Book Chapter 13, Intech Open Science, pp. 321-340, 2012.

  • Hilal A. Fadhil, Angela Amphawan, Hasrul A.B. Shamsuddin, Thanaa Hussein Abd, Hamza M.R. Al-Khafaji, S.A. Aljunid, Nasim Ahmed, “Optimization of Free Space Optics Parameters: An Optimum Solution for Bad Weather Conditions”, Optik - International Journal of Light and Electron Optics, Vol. 124, No. 19, pp. 3969-3973, 2014.

  • Aditi Malik and Preeti Singh, “Comparative Analysis of Point to Point FSO System Under Clear and Haze Weather Conditions”, Wireless Personal Communications, Vol. 80, No. 2, pp. 483-492, 2015.

  • Mitsuji Matsumoto, “Next Generation Free-space Optical System by System Design Optimization and Performance Enhancement”, Proceedings of Progress in Electromagnetics Research Symposium, pp. 501-506, 2012.

  • ITU-T Recommendation G 694.2, Spectral Grids for WDM Applications: CWDM Wavelength Grid, 2003, Available at https://www.itu.int/rec/T-REC-G.694.2/en

  • B. Patnaik and P.K. Sahu, “Novel QPSK Modulation for DWDM Free Space Optical Communication System”, Wireless Advanced, pp. 170-175, 2012.

  • Salasiah Hitam, Siti N. Suhaimi, Ahmad S.M. Noor, Siti B.A. Anas and Ratna K.Z. Sahbudin, “Performance Analysis on 16-Channels Wavelength Division Multiplexing in Free Space Optical Communication Under Tropical Regions Environment”, Journal on Computer Science, Vol. 8, No. 1, pp. 145-148, 2012.

  • Hilal A. Fadhil, Angela Amphawan, Hasrul A.B. Shamsuddin, Thanaa Hussein Abd, Hamza M.R. Al - Khafaji, S.A. Aljunid and Nasim Ahamed, “Optimization of Free Space Optics Parameters: An Optimum Solution for Bad Weather Conditions”, Optik - International Journal of Light and Electron Optics, Vol. 124, No. 19, pp. 3969-3973, 2013.

  • Abisayo O. Aladeloba, Malcolm S. Woolfson and Andrew J. Phillips, “WDM FSO Network with Turbulence Attenuated Interchannel Crosstalk”, Journal of Optical Communication and Networking, Vol. 5, No. 6, pp. 641-651, 2013.

  • E. Ciarramella, Y. Arimoto, G. Contestabile, M. Presi, A. D’Errico, V. Guarino and M. Matsumoto, “1.28 terabit/s (32x40 Gbit/s) WDM Transmission System for Free Space Optical Communications”, IEEE Journal on Selected Areas in Communications, Vol. 27, No. 9, pp. 1639-1645, 2009.

  • Ibrahim Khalil, Atanu Biswas, Rakibul Bari Rakib, Md. Abu Sayeed and Md. Sohel Mahmud Sher, “WDM Transmission for Free Space Optics Under Different Atmospheric Conditions”, Trends in Opto-Electro & Optical Communications, Vol. 4, No. 1, pp. 1-4, 2014.

  • Ming Sheng and Xiu-xiu Xie, “Average Bit Error Rate Analysis for Free-Space Optical Communications Over Weak Turbulence with Pointing Errors”, Optical Engineering, Vol. 51, No. 10, pp. 5009-5014, 2012.

  • D.W. Young et al., “Demonstration of High Data Rate Wavelength Division Multiplexed Transmission Over A 150km Free Space Optical Link”, Proceedings of IEEE Military Communications Conference, pp. 1-6, 2007.

  • Nur Haedzerin Md. Noor, Ahmed Wathik Naji and Wajdi Al-Khateeb, “Performance Analysis of a Free Space Optics Link with Multiple Transmitters/Receivers”, IIUM Engineering Journal, Vol. 13, No. 1, pp. 49-58, 2012.

  • S.A. Al-Gailani, A.B. Mohammad and R.Q. Shaddad, “Enhancement of Free Space Optical Link in Heavy Rain Attenuation Using Multiple Beam Concept”, Optik - International Journal of Light and Electron Optics, Vol. 124, No. 21, pp. 4798-4801, 2013.

  • S.A. Al-Gailani, A.B. Mohamed, R.Q. Shaddad, U.U. Sheikh and M.A. Elmagzoub, “Hybrid WDM/Multibeam Free Space Optics for Multigigabit Access Network”, Photonic Network Communications, Vol. 29, No. 2, pp. 138-145, 2014.

  • S. Jasmine, S. Robinson and K. Malaisamy, “Investigation on Free Space Optical Communication for Various Atmospheric Conditions”, Proceedings of 2nd International Conference on Electronics and Communications Systems, pp. 1030-1034, 2015.


Abstract Views: 426

PDF Views: 3




  • Investigation on Hybrid WDM (DWDM+CWDM) Free Space Optical Communication System

Abstract Views: 426  |  PDF Views: 3

Authors

S. Robinson
Department of Electronics and Communication Engineering, Mount Zion College of Engineering and Technology, India
S. Jasmine
Department of Electronics and Communication Engineering, Mount Zion College of Engineering and Technology, India
R. Pavithra
Department of Electronics and Communication Engineering, Mount Zion College of Engineering and Technology, India

Abstract


Free Space Optical (FSO) communication is being realized as an effective solution for future accessing networks, offering light passed through air. The performance of FSO can be primarily degraded by various atmospheric attenuation namely, rain, fog, haze and snow. At present, hybridization of Dense Wavelength Division Multiplexing (DWDM) with Coarse Wavelength Division Multiplexing (CWDM) becomes necessary to scale the speed and high bandwidth of the services. In this paper, hybrid WDM system is proposed, designed and the network parameters such as Bit Error Rate (BER), Quality Factor and receiver sensitivity are analyzed with respect to link distance for various weather conditions. For investigation, 4 CWDM and 8 DWDM channels are considered whose corresponding channel spacing is 20nm and 0.8nm, respectively. From the simulation, it is investigated that the average link distance of proposed hybrid WDM-FSO system for DWDM and CWDM system at very clear condition are around 810km and 780km. The proposed hybrid WDM based FSO system is designed to handle the quality of transmission for 12 users, each at a data rate of 2.5Gbps.

Keywords


FSO, Hybrid WDM, CWDM, DWDM, BER.

References