ﻃﺮاﺣﯽ و ﺷﺒﯿﻪﺳﺎزي ﮔﯿﺖ ﻣﻨﻄﻘﯽ XORﻣﺒﺘﻨﯽ ﺑﺮ ﮐﺮﯾﺴﺘﺎل ﻓﻮﺗﻮﻧﯽ دوﺑﻌﺪي

Design and Simulate XOR Logic Gate Based on Two-dimensional Photonic Crystal

در اﯾﻦ ﺗﺤﻘﯿﻖ ﺑﺎ اﺳﺘﻔﺎده از ﺳﺎﺧﺘﺎر ﮐﺮﯾﺴﺘﺎل ﻓﻮﺗﻮﻧﯽ دو ﺑﻌﺪي ﯾﮏ ﮔﯿﺖ ﻣﻨﻄﻘﯽ XOR ﺑﺎ ﻓﻨﺎوري ﺳﺎﺧﺖ آﺳﺎن ﻃﺮاﺣﯽ و ﺷﺒﯿﻪ ﺳﺎزيﺷﺪه اﺳﺖ. اﯾﻦ ﺳﺎﺧﺘﺎر ﺷﺎﻣﻞ دو ورودي و ﯾﮏ ﺧﺮوﺟﯽ ﺑﻪ ﺻﻮرت ﻣﺴﺘﻘﯿﻢ ﺑﻮده و ﺑﺎ اﺳﺘﻔﺎده از ﺟﺎﺑﺠﺎ ﻧﻤﻮدن دو ﻣﯿﻠﻪ در ﻣﺤﻞ اﻟﺤﺎق وروديﻫﺎ، از اﻧﺘﺸﺎر ﻧﻮر در ﮐﺎﻧﺎلﻫﺎي ورودي ﺑﻪ ﻫﻨﮕﺎم ﻏﯿﺮﻓﻌﺎل ﺑﻮدن ﯾﮑﯽ از آنﻫﺎ، ﺟﻠﻮﮔﯿﺮي ﻣﯽﮐﻨﺪ. ﺑﺨﺎﻃﺮ ﻧﻮع ﻃﺮاﺣﯽ اﯾﻦ ﺳﺎﺧﺘﺎر، ﺧﺮوﺟﯽﻫﺎي ﻣﺎ ﻧﺰدﯾﮏﺗﺮﯾﻦ ﻣﻘﺪار ﺑﻪ وروديﻫﺎي اﻋﻤﺎل ﺷﺪه را داراﺳﺖ. در اﯾﻦ ﻣﻘﺎﻟﻪ ﺳﻌﯽ ﺷﺪه اﺳﺖ ﺗﺎ ﺗﻮان ﻧﻮري در ﺧﺮوﺟﯽ ﺑﺮرﺳﯽ ﺷﻮد ﺗﺎ ﺑﯿﺸﺘﺮﯾﻦ ﻣﻘﺪار را ﺑﻪ ﺗﻮان ﻧﻮري ورودي داﺷﺘﻪ ﺑﺎﺷﺪ. ﻫﻤﭽﻨﯿﻦ ﻧﺸﺖ ﺑﻪ ﮐﺎﻧﺎل ورودي ﻣﺠﺎور ﻧﯿﺰ ﻣﻮرد ﺑﺮرﺳﯽ ﻗﺮار ﺧﻮاﻫﺪ ﮔﺮﻓﺖ ﺗﺎ ﮐﻤﺘﺮﯾﻦ ﻣﻘﺪار را داﺷﺘﻪ ﺑﺎﺷﺪ. ﻣﺤﺎﺳﺒﺎت ﺳﺎﺧﺘﺎر ﺑﺎﻧﺪ، از روش ﺑﺴﻂ ﻣﻮج ﺗﺨﺖ ﺑﻮده و ﻧﺘﺎﯾﺞ ﻧﺸﺎن دﻫﻨﺪه اﯾﻦ اﺳﺖ ﯾﮏ PBG ﺑﺎ ﻃﻮل ﻣﻮج 1/26 ﻣﯿﮑﺮوﻣﺘﺮ ﺗﺎ 1/92 ﻣﯿﮑﺮوﻣﺘﺮ اﯾﺠﺎد ﺷﺪه، ﮐﻪ در اﯾﻦ ﻓﺎﺻﻠﻪ ﻫﯿﭻ ﻃﻮل ﻣﻮﺟﯽ ﻧﻤﯽﺗﻮاﻧﺪ در ﺳﺎﺧﺘﺎر اﻧﺘﺸﺎر ﯾﺎﺑﺪ.

Using a two-dimensional (2D) photonic crystal structure in this research, an XOR logic gate has been designed and simulated through easy fabrication technology. The structure includes two inputs and one output used directly, and by moving two rods at the intersection of the inputs, it prevents the light emission in the input channels when one of them is deactivated. Because of the type of design of the same structure, our outputs have the closest value to those of the applied inputs. In this paper, we have attempted to examine the optical power at the output, so that it has the highest optical power value as compared to the input optical power. The adjacent input channel leakage ratio (AC LR) will also be controlled, so that it has the lowest value. Band structure calculations are made through plane-wave expansion method, and the results indicate that a PBG with a wavelength of 1.26 μm to 1.92 μm has been created that no wavelength can be propagated in the structure within the same interval.