Cascaded Microresonator-Based Matrix Switch for Silicon On-Chip Optical Interconnection
2009; Institute of Electrical and Electronics Engineers; Volume: 97; Issue: 7 Linguagem: Inglês
10.1109/jproc.2009.2014884
ISSN1558-2256
AutoresAndrew W. Poon, Xianshu Luo, Fang Xu, Hui Chen,
Tópico(s)Photonic Crystals and Applications
ResumoThis paper reviews developments in cascaded microresonator-based matrix switches for silicon photonic interconnection networks in many-core computing applications. Specifically, we emphasize our recently proposed 5 $\times$ 5 matrix switch comprising two-dimensionally cascaded microring resonator-based electrooptic switches coupled to a waveguide cross-grid on a silicon chip. The cross-grid adopts low-loss low-crosstalk multimode-interference-based waveguide crossings. Such a microresonator-based matrix switch offers nonblocking interconnections among multiple inputs and multiple outputs, with the key merits of i) a tens to hundreds of micrometers-scale footprint, ii) gigabit/second-scale data transmission, iii) nanosecond-speed circuit-switching, iv) 100- $ \mu{\hbox{W}}$ -scale dc power consumption per link, and v) large-scale integration for networks-on-chips applications. We analyze in detail the microring resonator-based cross-grid switch design for high-data-rate signal transmission in the context of our proposed 5 $\times$ 5 matrix switch. We also study the feasibility of large-scale integration of the matrix switch. We report proof-of-concept experiments of a single cross-grid switch element and a 2 $\times$ 2 matrix switch, propose design guidelines, and discuss future engineering challenges.
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