Istanbul, Turkey, 11 December 2012
1. Background of research and development 2. Subjects in optical communication systems 3. Voice communication system without power supply 3. 1. Technology for downstream signal 3. 2. Technology for upstream signal 4. Conclusions and recommendations Istanbul, Turkey , 11 December 2012 2
Optical access system based on PON Istanbul, Turkey , 11 December 2012 3
Problem communication blackout during power failures Istanbul, Turkey , 11 December 2012 4
Possible solutions and required functions for PON Istanbul, Turkey , 11 December 2012 5
System configuration Istanbul, Turkey , 11 December 2012 6
Downstream system configuration Istanbul, Turkey , 11 December 2012 7
Feasibility study of downstream system Istanbul, Turkey , 11 December 2012 8
Upstream system configuration Istanbul, Turkey , 11 December 2012 9
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We introduced an optical access system that enables voice communication without power supply, which is an important problem of optical communication systems, during power failure in a user’s house. Proposed system employees low threshold Ge-diode radio technique and SCM for downstream signal and DSP techniques for upstream signal. Now, optical communication system is one of life lines such as water, electric, gas and so on. Furthermore, we think that an importance of communication system will be increase, certainly although there is habitat segregation with a mobile system. Istanbul, Turkey , 11 December 2012 18
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