World-first coexistence trial of TDM and CDM giga-bit passive optical networks (PONs) was successfully demonstrated. Very shallow isolation of 7dB between G- and CDM-PON at OLT and ONU was verified on the enhancement band of G.984.5. Adding the CDM-PON onto GPON can provide following technical and economical impacts; low-cost coexistence, minimum service outage, and combination of best-effort and guaranteed-bandwidth for efficient and high-quality network services due to CDM feature.

© 2008 Optical Society of America

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