期刊
OPTICS COMMUNICATIONS
卷 370, 期 -, 页码 231-238出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.optcom.2016.03.020
关键词
All optical gates; Nonlinear photonic crystals; Threshold logic
类别
In this paper, a general method is proposed to design all-optical photonic crystal logic gates and functions based on threshold logic concept that have regular pattern in inputs. In our proposed structure, a photonic crystal junction is cascaded by a threshold power level detector. Additionally, a novel mechanism is introduced to shift the threshold power level for designing different logic gates and functions. The finite difference time domain and plane wave expansion methods are used to evaluate the proposed structures. The proposed gates and functions occupy an area less than 150 mu m(2) and also, the maximum power required for the switching mechanism is 15 W. The inputs and output in the mentioned gates and functions are homogeneous and they can operate with a bit rate of about 500 Gbits/s. (C) 2016 Elsevier B.V. All rights reserved.
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