East nusa tenggara submarine cable communication system design

Abstract

In this research, the design of submarine cable communication system for East Nusa Tenggara was made. There are five nodes in the design which is Ende, Larantuka, Kalabahi, Atambua, and Kupang based on Palapa Ring network plan map. The system is designed to handle data traffic of East Nusa Tenggara up to year 2030. Four links are designed which is Ende-Larantuka, Larantuka-Kalabahi, Kalabahi-Atambua, and Atambua-Kupang. Based on traffic forecasting, the traffic demand of the five nodes on year 2030 is 90.3 Gbps, which consist of 58.64 Gbps traffic traversing between nodes. 6λ of DWDM STM-64 channels with 10 Gbps datarate each is required to accomodate the demand of two-way transmission. The total length of cable required is 882.71 km which consists of 137.09 km terrestrial cable and 745.62 km submarine cable. The design uses OADM. One repeater is required for each Ende-Larantuka, Larantuka-Kalabahi and Atambua-Kupang links since the optical power at the receiver on each of the three links is below the minimum allowed value. Power feeding equipments are placed on those three links to supply power to the repeater. DCF is used to compensate dispersion. Performance analysis shows that the design complies with power budget, rise time, and OSNR criteria.