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ISSN: 2347-971X (online)ISSN: 2347-9728(print)International Journal of Innovations in Scientific andEngineering Research (IJISER)DESIGN AND IMPLEMENTATION OF FTTH NETWORK BASED ON GPONTECHNOLOGYFemey Rose1 , Dr. Sunil Jacob2 , Renjith R 31Assistant Professor, AISAT School of Engineering & Technology, Kalamassery, Kerala2Professor, Department of Electronics and communication, SSET, Ernakulam, Kerala3Technical Assistant, Sun Fiber Optics, Nest, Kakkanad, Kerala, IndiaAbstract—Fiber to the Home provides best transmission possibilities to conventional wired or wireless techniques.It offers advantages such as high bandwidth, immunity against interference, low cost & flexible designs, makes thetelecom operators to choose FTTX networks. FTTH based on GPON technology is the most efficient method forFTTH implementation since it provides triple play, high splitting ratio, low CAPEX (Capital expenditure) andOPEX (Operational expenditure) , high speed transmission and so on. This design proves the allocation of maximumnumber of users for a multi dwelling buildings with tolerable power budget and cost. This design is also capable toincorporate future services like IPTV and provides dynamic allocation of bandwidth (DAB) according to the userrequirements. INAS EMS software is used to show the active ports, diagnose the issues by fire alarm settings,physical / logical topological configuration support etc. after the network implementation.Keywords—Fiber to the Home (FTTH), Passive optical network (PON) , Optical network terminal (ONT), Opticalline terminal (OLT), Gigabit Passive optical network (GPON).1. INTRO DUCTIO NThe requirement such as high bandwidth and capacity,high speed internet, HDTV, VoIP causes the thoughtfor FTTX access networks. FTTH based on GPONtechnology is one of the techniques which can providetriple play services at a reasonable cost. It uses onlypassive equipment’s except at central office (CO) and atthe customer premises. Now most of the telecomoperators uses FTTH network based on GPON due toits flexibilities in handling extended technologies andservices in future. For a GPON technology maximum of128 uses can be included in a network with maximumreachability of 60 km and maximum distance betweenconcecutive ONTs of 20 km as per G.984.6 ITU-Tspecification [8]. It uses tree topology to maximize thecoverage with minimum network splits thus reducingoptical power [7]. GPON uses 2.44 Gbps downstreamwith AES encryption and 1.24 Gbps upstream datatransmission. Broadcasting or continuous transmissionfor downstream and TDM technique for upstream areused as transmission method.In this paper, the validation of proposed design isdone on the basis of power budget and cost. The resultsshows that the received power levels falls withintolerable power budget and the consumed cost is lowcompared to other networks. INAS EMS software isused to check the connectivity’s, active ports locationwww.ijiser.com209diagonisation of ONTs etc. The different profileconfigurations like ONU profile, VoIP profile ,DBA(Dynamic Bandwidth Allocation) profile are also doneto have different services. This paper includes differentsections like Components of GPON network, design,Implementation, testing results, and finally theconclusion.2. COMPONENTS OF GPON FTTH NETWORKA Passive Optical Network (PON) is capable of havingP2M (point to multipoint) network with passivecomponents like optical splitter or coupler along thetransmission section. It uses active components only atCO and at customer premises. It uses WDM to mix upvideo signals with the data and voice from OLT. TheFigure.1 shows the basic FTTH Network.Vol 4 Issue 11 Nov 2017/101

ISSN: 2347-971X (online)ISSN: 2347-9728(print)International Journal of Innovations in Scientific andEngineering Research (IJISER)2.2 Optical Network Terminal (ONT)It is an active component used at customer premiseswhich converts optical to electrical signals. ONU/ONTrepresents the single customer where they will get thetriple play application. H640 series GPON ONT areused. It is capable of having carrier class VoIPtelephony supporting both MGCP and SIP protocols,Flexible VLAN tagging support, QoS for trafficprioritization and bandwidthmanagement, IGMPsupport for IPTV applications. Its specifications aregiven in table 2.Table 2: H640 Series GPON ONTFigure 1: FTTH Network [7]2.1 Optical Line Terminal (OLT)It is the most important part of the network, where theelectrical signal from the service provider’s equipmentare converted into optical signals and given to thefeeder network. The mode of transmission from ONT isbroadcasting [8] from where it sends GEM framesthrough the GEM port with GEM port IDs It is capableof having Multi-service chassis for FTTx deployments,Supports a variety of service types, Non-blockingarchitecture with & Routing within distributedarchitecture, scalability and line rate performance, Fullelectrical and optical redundancy Outstandingscalability and line rate performance, Real-timenetwork traffic monitoring and analysis .V8240 GPONOLT is used. Specifications are given in the table 1.Table 1: V8240 GPON OLT Specifications.Flash MemorySDRAMDimensions (W xH x D)Switching CapacityPower Voltage ACtypeDC typeOperating TempSIU (SubscriberInterface Unit)NIU (NetworkInterface Unit)SFU (SwitchingFabric Unit)www.ijiser.com72 MB1 GB17.1 x 12.2 x11.2 in (434 x310 x 285 mm)296Gbps100-240VA C,50/60Hz-48/60VDC32 to 122 F (0to 50 C)10 slotsServiceInterface4 10/100Base-TX ports (RJ45)2 POTS ports (RJ11)1 RF video port (F-connector)UplinkInterfaceOperating TempStorageTempInputDimensions (W xH xD)1 GPON port (SC/APC type)32 to 104 F (0 to 40 C)-4 to 140 F (-20 to 60 C)100-240VA C Excluding bracket:10.24 x 2.05x 7.87 in (260 x 52 x 200 mm) Including bracket, wallmounting:10.51 x 2.60 x 7.87 in(267 x 66 x 200 mm) Excluding bracket, desktopmounting: 10.24 x 2.80 x 7.87in (260 x 71 x 200 mm)2.3 SplitterSplitters are used to physically split the fiber to numberof fibers; to couple same or different information’s to Nusers. MxN planar splitters are used which is based onplanar light wave circuit (PLC) technology and highprecision alignment. MxN splitters can split or combinelight from one or two fibers into N outgoing fibersuniformly over a wide spectral range with ultra-lowinsertion loss and low polarization dependent loss. Withupto 64 output ports, these splitters are ideal for highdensity split applications like Fiber To The Home(FTTH) networks, FTTx Deployments Optical CATVNetworks, CWDM and DWDM Systems , Passive2 slots2 slots210Vol 4 Issue 11 Nov 2017/101

ISSN: 2347-971X (online)ISSN: 2347-9728(print)International Journal of Innovations in Scientific andEngineering Research (IJISER)Optical Networks, Fiber Communication SystemsTelecom, LANs. It has the features like Low InsertionLoss, Ultra broadband performance (1260 –1630nm),Low PDL and PMD, Stable towards thermalvariations, Superior port to port uniformity. A splittertype is shown in Figure.2Figure 3: EDFA View 5.0 front viewFigure 2: PLC splitter with Ribbon fiber2. 4 EDFAErbium Doped Fiber Amplifier (EDFA) is used toamplify the video signal from the cable TV serviceprovider and feed into WDM. EDFA CATV (cable TV)is used which signify different models of endless poweroutput booster EDFA used in CATV networkapplication as C band signal promoter in opticaldomain. It has continuous circuit parameter monitoringfor safe operation, auto shutdown for safe guard ofinternal units, future proof upgradeable modules, freemonitoring software, and continuous display of opticalpower. EDFA View 5.0 is the software provided withthe system. By installing this software & interfacingEDFA with the PC, the system performance parameterslike the input power, output power, gain can bemonitored. The entire pump laser related parameters aredisplayed for easy trouble shooting of the system. Theinput power is 1.566 dBm ,output power and gainobtained are 18.043dBm, 16.526dB respectively .Thesoftware output is shown in Figure.3.www.ijiser.com2113. DESIGNThe design includes the steps involved in the initialstage of FTTH network design, splitter allocationdesign to each floor, overall FTTH network from OLTto an ONT, Power budget calculation, link losscalculation, cost calculation, power meter testing resultsat initial checking stage. The design flow chart showingthe each stage of developing an optimum design isgiven in Figure. 4. The cost and power budget are themain two parameters considered while designing. Thecustomer requirements includes :High bandwidth dataservice, National, international voice calling facilitieson all rooms, VoIP service and video phone facilities inall rooms, WiFi coverage in all common areas ,CATVservices in all rooms, IPTV service provisions in allrooms in near future, Dedicated bandwidth allocation asper requirement, multiple service provider facility, fordoctor’s room : data and voice, for each floor thereshould be WiFi ONT , data point and voice in nursesroom, for patients room there should be ONT terminalthat supports IPTV in future along with otherconnections.Vol 4 Issue 11 Nov 2017/101

ISSN: 2347-971X (online)ISSN: 2347-9728(print)International Journal of Innovations in Scientific andEngineering Research (IJISER)The splitter allocation in each floor is designedconsidering the insertion losses, power transmitted andreceived at OLT and ONT. The power and the lossesare calculated using the power meter testing. Thesplitter allocation design is shown in Figure.6 which isdrawn using coral drawing and power ,insertion losses(IL) calculated are given in table 3. This design isflexible to accommodate future extensions to eachfloor. Even though the design is made upto 9th floor ,the implementation is performed only upto 5th floor asper the customer requirement.Figure 4: Design Flow ChartFigure 6: Splitter allocation designThe FTTH network design showing thetransmission from OLT to one ONT is shown inFigure.5. The video signals are given to EDFA wherethere is an isolator to have the transmission only in onedirection and transmitted at 1550nm and the voice , dataare given to OLT to convert to optical signal andtransmitted at 1310nm.WDM mixes these two signalsfrom EDFA and OLT.Table 3: Power and Losses in the ComponentsFigure 5: FTTH network designwww.ijiser.com212Vol 4 Issue 11 Nov 2017/101