Abstract
In this paper, an optically controlled loop buffer is proposed and
experimentally demonstrated. It utilizes a semiconductor optical
amplifier (SOA) based loop mirror as a fast switch to realize the
writing and reading of packets within this buffer and a circulator
based optical reflector to achieve internal re-circulations. By adding
fibers with different lengths between the loop mirror and the circulator,
variable delay time per circulations can be obtained. We also demonstrate
the performance of the 2.5 and 10�Gb/s data packets in this buffer
structure, as well as the influence of the two different control
signal formats on the packet signal degradation during buffering.
This loop buffer has the merits of low cost and improved performance
compared to other similar loop buffer structures. According to the
obtained results, the achieved number of circulations is greatly
increased.
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