All-optical photonic crystal logic gates using nonlinear directional coupler

Sharifi, Hojjat; Hamidi, Seyedeh Mehri; Navi, Keivan

doi:10.1016/j.photonics.2017.10.002

Cited by 47 publications

(8 citation statements)

References 23 publications

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“…This periodicity causes the appearance of an optical property called photonic band-gap PBG where the transmission of light is totally forbidden [5][6]. Thanks to the bandgap (PBG), several optical devices can be realized such as: optical lters [7][8][9], demultiplexers [10][11], logic ports [12][13][14], adders [15][16], analog-to-digital converters [17][18], encoders [19][20], decoders [21][22][23] and splitters [24][25] ...ect.…”

Section: Introductionmentioning

confidence: 99%

Original architecture of an efficient all-optical 2 × 4 photonic crystals decoder based on nonlinear ring resonators

2022

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In this paper, we have presented an e cient original architecture of all-optical 2×4 photonic crystal decoder based on non-linear ring resonators. The fundamental structure is a square lattice of 2D GaAs rods, operating around the wavelength 1.55 µm. The proposed decoder is composed of a combiner with three input ports, where the port E is used for excitation and A 1 , A 2 are the control ports, and an optical switch with four output ports, and it is a nonlinear DMEX. For the creation of a switch at the wavelength of 1.55 µm, we used nonlinear chalcogenide glass rods with a nonlinear Kerr coe cient equal to 9×10 -17 m 2 /w. The switching intensity and structure size are 1 Kw /µm 2 , 27.12 µm × 17.96 µm, respectively. The contrast ratio is about 8.7. The maximum crosstalk and insertion losses are calculated to be about -22.1 and -4.5 dB. The maximum and minimum power levels for logic states 0 and 1 are 0.5P 0 and 0.37P 0 where P 0 is the input power. The nite element method was used to perform the necessary calculations.

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Section: Introductionmentioning

confidence: 99%

Original architecture of an efficient all-optical 2 × 4 photonic crystals decoder based on nonlinear ring resonators

2022

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“…These remarkable characteristics might have an advantage to the development of compact integrated circuits. PCs are utilized in several notable applications such as polarizers [3][4][5][6], power splitter [7,8], solar cell [9], logic gates [10,11,12], optical diode [13], laser [14], sensor [15] and self-collimation [16,17], among others. For a detailed study on PC applications, we suggest a timely review to the readers [18].…”

Section: Introductionmentioning

confidence: 99%

2D-Heterostructure Photonic Crystal Formation for On-Chip Polarization Division Multiplexing

Kazanskiy¹,

Butt²,

Хонина³

2021

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Herein, we offer a numerical study on the devising of a unique 2D-heterostructure Photonic crystal (PC) that can split two orthogonally polarized light waves. The analysis is performed via a two-dimensional finite element method (2D-FEM) by utilizing COMSOL Multiphysics software. The device consists of two discrete designs of PC formation. The first PC formation is optimized so that it permits both TE and TM-polarization of light to transmit through it. Whereas the second PC formation possesses a Photonic Bandgap (PBG) only for TE-polarized light. These two formations are combined at an angle of 45 degrees, resulting in a reflection of self-collimated TE-polarized light at an angle of 90 degrees owing to the PBG present in the second PC formation. While permitting the self-collimated TM-polarized light wave to travel uninterrupted. The proposed device has a small footprint of ~10.5 μm2 offering low transmission loss and high polarization extinction ratio which makes it an ideal candidate to be employed as an on-chip polarization division multiplexing system.

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“…These remarkable characteristics might have an advantage to the development of compact integrated circuits. PCs are utilized in several notable applications such as polarizers [3][4][5][6], power splitter [7,8], solar cell [9], logic gates [10][11][12], optical diode [13], laser [14], sensor [15], and self-collimation [16,17], etc. For a detailed study on PC applications, we suggest a timely review to the readers [18].…”

Section: Introductionmentioning

confidence: 99%

2D-Heterostructure Photonic Crystal Formation for On-Chip Polarization Division Multiplexing

2021

View full text Add to dashboard Cite

Herein, we offer a numerical study on the devising of a unique 2D-heterostructure photonic crystal (PC) that can split two orthogonally polarized light waves. The analysis is performed via a two-dimensional finite element method (2D-FEM) by utilizing the COMSOL Multiphysics software. The device consists of two discrete designs of PC formation. The first PC formation is optimized so that it permits both TE- and TM-polarization of light to transmit through it. Whereas, the second PC formation possesses a photonic bandgap (PBG) only for TE-polarized light. These two formations are combined at an angle of 45°, resulting in a reflection of self-collimated TE-polarized light at an angle of 90° owing to the PBG present in the second PC formation. While permitting the self-collimated TM-polarized light wave to travel uninterrupted. The proposed device has a small footprint of ~10.9 μm2 offering low transmission loss and high polarization extinction ratio which makes it an ideal candidate to be employed as an on-chip polarization division multiplexing system.

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All-optical photonic crystal logic gates using nonlinear directional coupler

Cited by 47 publications

References 23 publications

Original architecture of an efficient all-optical 2 × 4 photonic crystals decoder based on nonlinear ring resonators

Original architecture of an efficient all-optical 2 × 4 photonic crystals decoder based on nonlinear ring resonators

2D-Heterostructure Photonic Crystal Formation for On-Chip Polarization Division Multiplexing

2D-Heterostructure Photonic Crystal Formation for On-Chip Polarization Division Multiplexing

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