Optical Fiber Buffer for High‐Performance Broadband Switching
Optical Fiber Buffer for High‐Performance Broadband Switching
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DOI：
10.1002/ett.4460040616
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发表时间：
1993-11
影响因子：
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通讯作者：
F. Masetti;P. Gavignet-Morin
中科院分区：
文献类型：
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作者：
F. Masetti;P. Gavignet-Morin
本文提出了一种基于电控光纤延迟线的光缓存移位寄存器，用于满足ATM业务要求的高性能宽带交换机中的信元存储和缓存功能。采用多波长信元缓冲的概念，实现了部分共享的缓冲器，其存储容量相当于一组单个移位寄存器。最终的系统非常适合于采用时分和波分复用技术的光子交换机，以执行交换矩阵内的路由功能。我们已经证明了光纤作为信号延迟线和使用半导体光放大器作为与无源分路器相关的门的适用性，以实现细胞缓冲和时间切换。一个实验设置已实现在600 Mbit/s，数据包之间没有保护带。在整个系统的增益和速度方面获得了良好的性能：观察到的轻微惩罚和时间偏移表明系统同步非常好，因此能够允许更高的操作比特率。
This paper presents an optical buffer shift register based on a set of fiber delay lines electrically-controlled, to provide cell storage and queueing capabilities in high-performance broadband switches satisfying ATM service requirements. The concept of multi-wavelength cell buffering is adopted, to realise a partially shared buffer with a storage capacity equivalent to a set of single shift registers. The final system is well-suited for photonic switches adopting time- and wavelength-division multiplexing techniques to perform the routing functions inside the switching matrix. We have demonstrated both the suitability of optical fibers as signal delay lines and the use of semiconductor optical amplifiers as gates associated to passive splitters, to realise cell buffering and time-switching. An experimental set-up has been implemented at 600 Mbit/s, operating without guardbands between packets. Good performances were obtained in terms of gain and speed of the whole system: the slight penalty and time shifts observed show that the system synchronisation is very good, thus capable of allowing higher operating bit-rates.