Five-port silicon optical router based on Mach-Zehnder optical switches for photonic networks-on-chip
Five-port silicon optical router based on Mach-Zehnder optical switches for photonic networks-on-chip
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DOI：
10.1088/1674-4926/37/11/114008
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发表时间：
2016-11
影响因子：
5.1
通讯作者：
Yunchou Zhao;Hao Jia;J. Ding;Lei Zhang;Xin Fu;Lin Yang
中科院分区：
文献类型：
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作者：
Yunchou Zhao;Hao Jia;J. Ding;Lei Zhang;Xin Fu;Lin Yang
随着集成电路的不断发展，处理器的性能也在不断提高。在一个处理器中集成更多的内核是提高处理器性能的有效途径，而仅仅提高时钟频率是不可能进一步提高处理器的性能的。对于集成多核的处理器，其性能不仅取决于核数，还取决于核间的通信效率。随着一个芯片上集成了更多的处理器内核，需要更大的带宽来建立它们之间的通信。传统的电互连方式由于带宽有限、功耗高、时延长等缺点，逐渐成为提高多核处理器性能的瓶颈。光互连被认为是解决这一问题的一种潜在途径。光路由器是实现光互联的关键器件。它的基本功能是实现本地节点和多节点之间的数据路由和交换。本文提出了一种用于网状光子学片上网络的五端口光路由器。介绍了一种由8个热调谐硅Mach-Zehnder光开关组成的五端口光路由器。实验光谱响应表明，在1525 ~ 1565 nm波长范围内，该光路由器的20条光链路的光信噪比均在13 dB以上。每条光链路可以操纵50个波长通道，通道间距为100 GHz，同一波长范围内每个波长通道的数据速率为32 Gbps。光路由器的最低能量效率为43.4 fJ/bit。
With the continuous development of integrated circuits, the performance of the processor has been improved steadily. To integrate more cores in one processor is an effective way to improve the performance of the processor, while it is impossible to further improve the property of the processor by only increasing the clock frequency. For a processor with integrated multiple cores, its performance is determined not only by the number of cores, but also by communication efficiency between them. With more processor cores integrated on a chip, larger bandwidths are required to establish the communication among them. The traditional electrical interconnect has gradually become a bottleneck for improving the performance of multiple-core processors due to its limited bandwidth, high power consumption, and long latency. The optical interconnect is considered as a potential way to solve this issue. The optical router is the key device for realizing the optical interconnect. Its basic function is to achieve the data routing and switching between the local node and the multi-node. In this paper we present a five-port optical router for Mesh photonics network-on-chip. A five-port optical router composed of eight thermally tuned silicon Mach-Zehnder optical switches is demonstrated. The experimental spectral responses indicate that the optical signal-to-noise ratios of the optical router are over 13 dB in the wavelength range of 1525-1565 nm for all of its 20 optical links. Each optical link can manipulate 50 wavelength channels with the channel spacing of 100 GHz and the data rate of 32 Gbps for each wavelength channel in the same wavelength range. The lowest energy efficiency of the optical router is 43.4 fJ/bit.