ANALISIS FIBER TO THE HOME

AbstrakSerat optik merupakan media transmisi yang dapat menyalurkan informasi dengan kapasitas besar dan teknologinya disebut JARLOKAF (Jaringan Lokal Akses Fiber). Salah satu perkembangan JARLOKAF yaitu FTTH (Fiber To The Home). Pembangunan jaringan FTTH menggunakan teknologi GPON. Berdasarkan hal tersebut maka dilakukan analisis jaringan FFTH berteknologi GPON dengan parameter daya transmisi di Optical Line Terminal, daya receiver, redaman kabel serat optik, konektor, passive splitter, dan sambungan. Hal tersebut dilakukan dengan metode link power budget. Setelah itu dilakukan pengembangan jaringan FTTH dengan merancang jalur distribusi sebanyak tiga opsi dan menganalisis menggunakan metode link power budget dan rise time budget. Hasil penelitian menunjukkan bahwa daerah Meranti dengan 40 pelanggan terakhir memiliki Pr sensitivitas rata-rata uplink (downlink), yakni -23,8 dBm (- 23,6 dBm) sehingga margin daya yang didapatkan adalah 4,1 dBm untuk uplink dan 4,3 dBm untuk downlink. Sedangkan pada perencanaan pengembangan jaringan Meranti didapatkan bahwa opsi kedua menjadi opsi yang terbaik dengan jarak total 5,422 km memiliki Pr sensitivitas terbesar, yakni -25,8 dBm untuk uplink dan -25,2 dBm untuk downlink sehingga margin daya yang didapatkan adalah 2,2 dBm untuk uplink dan 2,8 untuk downlink dan rise time total sebesar 0,258 ns untuk uplink dan 0,283 ns untuk downlink.Kata kunci : Jaringan FTTH, GPON, Link Power Budget, Rise Time Budget

Study on P2P Service Bearer Method for Passive Optical Network for Long Distance and Wide Access

For the effective bearer of P2P-type services, a P2P service bearer reorientation method for passive optical network for long-distance wide access based on P2P protocol message and wire-speed message identification is proposed. However, the reorientation method still has the possibility of relocation failure, so it is modified – that is, an improved P2P service bearer reorientation method based on optical line terminal (OLT) and optical network unit (ONU) cooperation. And the tool NS2 is used for network simulation analysis. Through simulation analysis, it is verified that the modified reorientation method improves the data traffic burden at the core network and at the OLT.

AN ENHANCED G-PON FAULT MONITORING TECHNIQUE USING OPTICAL SENSOR

In this study a technique for a centralized fault monitoring and detection in Gigabit-capable Passive Optical Network (G-PON) using fiber Bragg grating (FBG) sensor is proposed. The technique detects fault once it occurs at the vulnerable locations in the fiber optic distribution link by the proposed FBG devices. Monitoring signal in the C-band is reflected by a uniform FBG with different Bragg wavelengths and reflectivities. The FBGs serve as branch identifiers in the network. The reflected signal from the FBGs is analyzed at the Optical Line Terminal (OLT) in the Central Office (CO) by an Optical Spectrum Analyzer (OSA), to identify the branch with rupture in the network. The simulated result obtained shows that the system can monitor, and detect a fault in the physical layer of the optical distribution network with negligible effects on data signal transmission.

Availability Analysis of Different PON Models

Due to the increasing demands of individual users, Passive Optical Networks (PON) are a promising technology for future broadband access networks. Reliable access to network services is a very important feature, so the availability of the connection is becoming one of the most important requirements. Failure of the optical fiber occurring between the Optical Line Terminal (OLT) and the passive optical splitter can cause the services becoming unavailable for a large number of users, so it is necessary to prevent such an occurrence by providing backup resources – in this case a spare optical fiber. When constructing the spare path (protection fiber), it is important to keep in mind that, if possible, the working and the spare fiber should not be positioned within the same cable. Failure of the optical fiber between the passive splitter and the individual user also means a loss of service for that user. In that case, protection may be offered by adding spare fibers. The question is, however, whether such a solution is cost-effective, as it would lead to a significant cost increase in the construction of the access network. This paper presents the availability analysis conducted for different PON models.