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year 27, Issue 1 (Iranian Nano-Photonic Conference 2020 2020)
ICOP & ICPET _ INPC _ ICOFS 2020, 27(1): 67-69 |
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Keshtkar P, Miri M, Jadid G. Ultra-fast and low threshold optical bistability in a graphene-based coupled waveguide and micro-disk structure. ICOP & ICPET _ INPC _ ICOFS 2020; 27 (1) :67-69
URL: http://opsi.ir/article-1-2255-en.html
URL: http://opsi.ir/article-1-2255-en.html
1- Dept. of Electronics, Faculty of ECE, Shiraz University, Shiraz, Iran.
Abstract: (1018 Views)
In this paper, a coupled waveguide and micro-disk resonator structure is proposed to achieve optical Bistability using graphene nonlinearity conduction. The simulation results from all-numerical method and coupled mode theory has shown that by adjusting the micro-disk radius, Optical Bistability can be achieved with a very small threshold power of 0.79mW or very short rise and fall time of 1.24ps and 1.53ps. Compared to previous works, the proposed structure features a faster response time, smaller dimensions and ease of fabrication, while its threshold power is much lower than previous works.
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