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26 September 2013 Electro-optic logic circuits based on silicon microring switches
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Electro-optic logic is a paradigm which employs the optical switch network to perform the logical operation. The status of each switch in the optical network is determined by an electrical Boolean signal applied to it. The operation of each switch is independent of the operations of other switches in the network and the operation result propagates in the network at the speed of light. The overall latency of the logic circuit is very small and all switches perform their operations almost simultaneously. Therefore, the electro-optic logic has a very high operation speed. Silicon microring resonator is an attractive structure owing to its outstanding performances, such as compact size, ultra-low power consumption and CMOS-compatible process. Therefore, the electro-optic logic based on silicon microring switches is easy to realize large-scale integration and low-cost manufacture in a high-volume CMOS-photonics foundry. We have proposed and demonstrated two electro-optic logic circuits based on silicon microring switches including XOR/XNOR and AND/NAND. We also proposed the architectures to achieve encoder, decoder and half-adder, and demonstrated them with the thermo-optic effect. In this paper, we will review the recent research on electro-optic logic circuits based on silicon microring switches and introduce new development in this topic.
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Lin Yang, Lei Zhang, and Yonghui Tian "Electro-optic logic circuits based on silicon microring switches", Proc. SPIE 8855, Optics and Photonics for Information Processing VII, 88550E (26 September 2013);

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