Abstract
Problem statement: This study highlight on restoration scheme propose d against failure in working line at the drop region for Fiber-To-The Ho me (FTTH) with a Passive Optical Network (PON). Whereas PON is a system that brings optical fiber c able and signals all or most of the way to the end user. In this study we highlighted the issue on survivabilit y scheme against failure which is focused scattered residence architectures. Approach: Two type of restoration scheme is proposed by means of linear protection (tree) and migrate protection (ring). Ou r proposal scheme is inexpensive and applicable to any residence architecture (ordered placement and scatt ered placement). The advantage of this scheme is th e failure at fiber line can be recovered until two le vels to make sure the optic signal flow continuousl y. FTTH based network design is simulated by using OptiSystem 7.0 in order to investigate the power output and BER performance at each node in the tree and ring protection scheme in scattered placement to prove th e system feasibility. Results: The simulation analysis for output power in a linea r protection path produced almost same output power for all optical nodes rega rdless of the position and situation of the node. I n linear protection, signal is split by optical splitter and did not having loss of power at each node. Thus th e percentage adjustment on the coupling is obtained where; the average output power measured at the rece iver is at -28.4206 dBm. While the signal for ring path is optimized by adjusting the loss ratio (n%) and t ransmit it (1-n%) in the optical coupler. Also found that; an average output power is -23 dBm only. A simulation of distance accessibility is increased with the increa sing of sensitivity that used for the linear path a nd ring path. Conclusion: This study suggests the migration of tree to ring topology to enable the signal flow continuously in the case of failure occurs specific ally in random or scattered placement topology. Our proposal is the first reported up to this time in w hich the upstream signal flows in anticlockwise in ring topology when the restoration scheme activated.
Highlights
Path line to carry the optical signal when the failure is occur in the other line (Han et al, 2007)
In our proposal, the downstream signal will go through the main fiber in a linear path and the signal goes through an optical splitter, to distribute power into multiple recipients
The design consists of optical nodes act as additional elements that used to carry out the protection scheme until it is able to troubleshoot three level of impairment in fiber line
Summary
Path line to carry the optical signal when the failure is occur in the other line (Han et al, 2007). In our proposal, the downstream signal will go through the main fiber in a linear path (tree line) and the signal goes through an optical splitter, to distribute power into multiple recipients. The linear protection signal is separate by splitter and the study (Hossain et al, 2005) This scheme minimizes the function of fiber and ensures that no data packets are lost with the components ready to standby. If damage occurs online, which carry data signals are transferred via the adjacent ONU protection under the proposed scheme. If both of working and protection line are failure, ring line will be activated. ACS controlled all the optical switch function to change path
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