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Performance Analysis of Time Division Multiplexed Optical Output Buffers  

정준영 (한양대학교 전자통신전파공학과 광통신연구실)
고광철 (한양대학교 전자통신전파공학과 디지털시스템설계연구실)
정제명 (한양대학교 전자통신전파공학과 광통신연구실)
Abstract
We analyze the performances, such as the cell loss probability(CLR) and the cell delay time, of time division multiplexed(TDM) optical output buffers using traveling delay lines or delay-line loops for buffering. Since traveling delay lines used for buffering are superior over delay-line loops in terms of simplicity and signal quality, they were used in a conventional TDM optical output buffer. However, the latter is more flexible than the former in that the cell storage time is adjustable by changing the recirculating times of a cell in the loops. So we propose a novel TDM optical output buffer using delay-line loops for buffering. We show that the proposed TDM optical output buffer can reduce the number of buffering unit required to achieve a CLR of less than 10$^{-9}$ . When the number of buffering unit is sufficiently large, we show that both TDM optical output buffers have same cell delay time characteristic.
Keywords
CLR; Cell delay time; TDM optical output buffer;
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