Abstract
Problem statement: Fiber To The Home (FTTH) is optical network that play important role to carry multimedia service to customers. The failure service caused by fiber optic cut or device malfunction always happens and it cannot be avoided. Approach: To solve the failure efficiently and effectively, it is needed a real time monitoring system that can work automatically to detect the failure and perform restoration. Smart wireless system is built to perform this task. It can monitor the optical signal continuously and perform restoration fast. Tapping method is used to take a small part of optical signal that goes to customers. This small amount of optical signal will be processed by converter and microcontroller for monitoring and restoration purpose. Results: Based on our experiment, the best coefficient coupler in this system is 0.1 with the receiver sensitivity 32 dBm. This system also is capable to detect the amplitude of video signal synchronous by real time. Conclusion: The proposed system is the first reported up to this time using RF signal to monitor the optical signal and perform automatic restoration.
Highlights
Optical communication systems have begun to be developed by many researchers after finding that the use of copper cable has many disadvantages
Optical signal will be converted to electrical signal using Optical Network Unit (ONU) (Koonen, 2006)
Experiment has been done in Spectech Laboratory, Universiti Kebangsaan Malaysia to determine the performances of this monitoring system
Summary
Optical communication systems have begun to be developed by many researchers after finding that the use of copper cable has many disadvantages. FTTH-PON is an optical communication system that is used to carry communications signals over fiber optic cables from Optical Line Terminal (OLT) in Central Office (CO) to all customers. This study discusses about an automatic monitoring and controlling system in FTTH based on smart wireless system so that all failures will be solved fast and efficiently This will give many advantages both service provider and customers. The quality of video signal will decrease when the loss of optical power above 19 dB This means that the FTTH controlling system based on monitoring the quality of optical signal cannot be used to perform the switching process. The quality of video signal is affected by loss of optical power and is caused by nonlinear system in optical communication.
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