Abstract
Colorless gigabit wavelength-division-multiplexing
(WDM)/time-division-multiplexing (TDM) hybrid passive optical network (PON)
using a remote protocol terminator is proposed and experimentally
demonstrated. The system consists of reflective semiconductor optical
amplifier-based WDM-PON and a legacy TDM-PON, combined with a simple and
efficient remote node structure in order to provide high-speed
fiber-to-the-home service to a large area with a high population density.
The demonstrated system can support 512 subscribers with a single feeder
fiber. The performance and feasibility of the system were evaluated by
transmitting gigabit per second data including the effects of Rayleigh
backscattering and 20 km attenuation. The system has been used by Korea
Telecom to provide commercial services in Gwangju, Korea, since March 2009,
after successfully passing through the benchmark test. This is the first
commercial deployment of a WDM/TDM hybrid PON. It can accommodate
field-deployed TDM-PON link without any modification and extend the maximum
total reach of PON link by the use of remote protocol termination. Number of
subscribers and the allocated bandwidth to the subscribers can be designed
by simply changing the splitting ratio.
© 2010 IEEE
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