Simulative Analyzing of Covering Suburban Areas with 32 × 10 Gbps DWDM-PON FTTH Using Different Dispersion and Power Mustafa H. Ali 1 , Ali M. Almufti 2 , and Hiba A. Abu-Alsaad 3 1 Department of Computer science, College of Education, Mustansiriyah University, Baghdad 14022, Iraq 2 Department of Electronics and Communications Engineering, College of Engineering, Al-Nahrain University, Baghdad 64001, Iraq 3 Department of Computer Engineering, College of Engineering, Mustansiriyah University, Baghdad 14022, Iraq Email: mustafa.h@uomustansiriyah.edu.iq; ali.almufti@eng.nahrainuniv.edu.iq; eng.hibaakram@uomustansiriyah.edu.iq Abstract —This paper contains an analyzing investigation of 32 channel - 10 Gbps DWDM-PON FTTH Simulate reaching a village in suburban area in environment that cannot put any sub node (amplifier or repeater) in the middle of the distance, therefore we design a system that deliver the CO signal directly from the OLT in the central of the city to the houses of the village all the way passive. to accomplish that we need a constant channel Spacing equal 100 GHz. with different dispersion (2,4,6,8,10 ps/nm.km) and power (-10, -5, -3,0,3,5,10) at the end of comparison of BER and Q factor for DWDM systems we reach a maximum distance 129 km with Q factor = 6.16 and BER = 3.44 e-10 in the presence of nonlinearities. This system can be severely limited by dispersion as we know smaller the dispersion the better the Q- factor but we will prove, not always the smaller the dispersion the better the Q-factor as we will see in some distance like 60,80 km the best performance is done with dispersion equal to 4, 6 and sometime 8 ns/nm.km not 2. Index Terms—Dispersion, BER, Q-Factor, (DWDM- PON), FTTH, OPTISYSTEM I. INTRODUCTION In recent years we notice a rapidly increasing in technology because of the demand for high bandwidth from each end users ([1] and [2]). Passive Optical Networks is take into account as one of the method that are capable dealing with this request, due it can supply for each user a high bandwidth, also it is consider as a cost effective and demand minimum amount of maintenance because there is non-attendance of any kind of active equipment between the OLT and ONU such as repeater, switches etc ([3]-[6]). So deploying PONs for access network to become as a promising technique resolving to what we know "the last-mile bottleneck" ([7]-[9]). A techniques called WDM-PON (Wavelength Division Multiplexing Passive Optical Network) is suggested to face the challenging growth in users high-bandwidth Manuscript received August 20, 2018; revised April 2, 2019. This work was supported by Mustansiriyah University Corresponding author email: mustafa.h@uomustansiriyah.edu.iq. doi:10.12720/jcm.14.5.381-389 demand. So dozens of wavelengths in a single fiber can send simultaneously ([10] and [11]). now in Iraq for example it can reaches up to 192 wavelengths per single fiber and each wavelength can carry up to 100 Gbps this mean a single fiber can transmit up to 19.2 Tbps and this will make a jumps in the internet of Iraq. We should put in our mined that the agreement of WDM-PON with presenting TDM-PON is a big necessity for NG-PON to be economical applicable [12]. But there is some disadvantage like the extra price in the designation of many wavelengths we must install an extra laser to produce these wavelengths in WDM-PON construction [13]. Fig. 1, shows a simple WDM-PON transmission components. Fig. 1.WDM PON components [14]. The ITU (International Telecommunication Union) has standard in the channel spacing for WDM is a 100 GHz grid which has a frequency range from 186 to 196 THz (C band) equal to wavelength extend from 1530 to 1612 nm ([15] and [16]). In spite of what we mention the huge rule WDM-PON can play, in the next several years' deployment it as FTTH is not yet expected ([17] and [18]). But as we know before can supply a large amount of bandwidth so concentrate him at applications cost like transmit lines for Fiber-to-the-Cabinet (FTTC) and Multiple Dewing Units (MDU). In the FTTH application region, generality all the bandwidth consumable support includes distribution of video (digital with high definition); requesting a minimum bandwidth from 8 Mbps to 15 Mbps rely on the techniques used to pressure Journal of Communications Vol. 14, No. 5, May 2019 ©2019 Journal of Communications 381