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OPTIMIZATION ANALYSIS OF OPTICAL TIME SLOT INTERCHANGERS IN ALL-OPTICAL NETWORK

机译:全光网络中光时隙交换器的优化分析

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A passive optical time slot interchanger (POTSI) is a simplified form of the Optical Time Slot Interchanger (OTSI). OTSIs are well known devices used in designing optical TDM switches to switch traffic in the time domain (I.e. inter-changing timeslot positions). Employing timeslot interchangers in optical TDM is similar to employing wavelength converters in WDM. The former converts between wavelengths, and the latter between timeslots. In this paper, we conduct a comparison between POTSI and the various OTSIs noted in the literature in terms of fiber length, crossbar size, and number of switching operations. Furthermore, we propose an optimized form of POTSI, Limited Range POTSI (POTSI-LR), which can switch a timeslot within a subset of nearby slots in a frame. We investigate the sharing of POTSI-LR as opposed to the dedication of one device per link. Finally, we analyze the network performance in terms of blocking probability and system complexity.
机译:无源光时隙交换器(POTSI)是光时隙交换器(OTSI)的简化形式。 OTSI是用于设计光学TDM交换机以在时域(即,相互交换的时隙位置)中交换业务的公知设备。在光学TDM中使用时隙交换器类似于在WDM中使用波长转换器。前者在波长之间转换,而后者在时隙之间转换。在本文中,我们对POTSI和文献中提到的各种OTSI进行了比较,包括光纤长度,交叉开关尺寸和开关操作次数。此外,我们提出了POTSI的一种优化形式,即有限范围的POTSI(POTSI-LR),它可以在帧中相邻时隙的子集中切换一个时隙。我们调查了POTSI-LR的共享情况,而不是每个链路专用一个设备。最后,我们根据阻塞概率和系统复杂性来分析网络性能。

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