Abstract
In this paper, we focus on the feedback construction of FIFO shared optical buffer queue from bufferless switch and fiber delay lines. The construction consists of an (M+2)times(M+2) crossbar switch and M fiber delay lines with delay d <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">1</sub> , d <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> , ... , d <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">M</sub> which are connected from M outputs of the switch fabric to M inputs. We show that, when setting d <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">i</sub> = min(M + 1 - i, i), i = 1, ... , M, such a construction can work as a 1-to-2 shared buffer queue.
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