Terabit switching and security enhancement in a WDM/TDM hybrid system

1997 Digest of the IEEE/LEOS Summer Topical Meeting: Vertical-Cavity Lasers/Technologies for a Global Information Infrastructure/WDM Components Technology/Advanced Semiconductor Lasers and Application Pub Date : 1997-08-11 DOI:10.1109/LEOSST.1997.619126

C. Lam, E. Yablonovitch

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Abstract

Development in the WDM technologies has made multi-wavelength optical sources and components available. By combining WDM mux-demux and fast electro-optic switches, a fast configurable WDM add-drop filter can be obtained. This enables using WDM with TDM in a way that each TDM time slot is also wavelength multiplexed. Hence introducing a second dimension for switching in addition to the time dimension. This also alleviates the demanding requirement on TDM as the switching throughput increases. The number of channels that can be supported in a WDM/TDM hybrid switching system is the product of the number of time slots and the number of available wavelengths. We have done preliminary analysis on the system throughput. We will present implementation considerations of the above described systems, the give the comparison on the throughput and security sides.

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WDM/TDM混合系统中的太比特交换与安全性增强

波分复用技术的发展使多波长光源和器件成为可能。通过将波分复用demux与快速电光开关相结合，可以得到一个快速可配置的波分复用加降滤波器。这使得使用WDM和时分复用的方式使得每个时分复用时隙也是波长复用的。因此，除了时间维度之外，还引入了用于切换的第二个维度。随着交换吞吐量的增加，这也减轻了对时分复用的苛刻要求。在WDM/TDM混合交换系统中可以支持的信道数是时隙数和可用波长数的乘积。我们对系统吞吐量做了初步的分析。我们将介绍上述系统的实现考虑因素，并在吞吐量和安全性方面进行比较。

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1997 Digest of the IEEE/LEOS Summer Topical Meeting: Vertical-Cavity Lasers/Technologies for a Global Information Infrastructure/WDM Components Technology/Advanced Semiconductor Lasers and Application

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