An optimum multimode interference coupler as an all-optical switch based on nonlinear modal propagation analysis

Tajaldini, Mehdi; Jafri, Mohd Zubir Mat

doi:10.1016/j.ijleo.2014.09.009

Cited by 6 publications

(1 citation statement)

References 20 publications

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“…Generally, optical switches include ring resonators, input and output ports that drop light with a particular wavelength. PCs-based switches have been accomplished by using the Kerr nonlinear effect [28,55]. Hache et al developed the first concept using the Kerr nonlinearity effect in PIC.…”

Section: Introductionmentioning

confidence: 99%

All-Optical Ultra-Fast Graphene-Photonic Crystal Switch

et al. 2019

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In this paper, an all-optical photonic crystal-based switch containing a graphene resonant ring has been presented. The structure has been composed of 15 × 15 silicon rods for a fundamental lattice. Then, a resonant ring including 9 thick silicon rods and 24 graphene-SiO2 rods was placed between two waveguides. The thick rods with a radius of 0.41a in the form of a 3 × 3 lattice were placed at the center of the ring. Graphene-SiO2 rods with a radius of 0.2a were assumed around the thick rods. These rods were made of the graphene monolayers which were separated by SiO2 disks. The size of the structure was about 70 µm2 that was more compact than other works. Furthermore, the rise and fall times were obtained by 0.3 ps and 0.4 ps, respectively, which were less than other reports. Besides, the amount of the contrast ratio (the difference between the margin values for logics 1 and 0) for the proposed structure was calculated by about 82%. The correct switching operation, compactness, and ultra-fast response, as well as the high contrast ratio, make the presented switch for optical integrated circuits.

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Section: Introductionmentioning

confidence: 99%