Design and simulation of an all optical full-adder based on photonic crystals

Vali-Nasab, Aziz-Morad; Mir, Ali; Talebzadeh, Reza

doi:10.1007/s11082-019-1881-1

Cited by 53 publications

(10 citation statements)

References 21 publications

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“…Table 2 indicates the comparison of our proposed full adder structure with other literature reported. In our proposed work we have achieved improved contrast ratio and response time as compared to literature reported in 16 and also we could reduce the response time to 0.25 ps which is significantly improved as compared to the literate reported.…”

Section: Resultsmentioning

confidence: 59%

“…The finite difference time-domain (FDTD) FullWAVE method [1][2][3] is used for the simulation of all optical two bit adders [4][5][6][7][8][9][10][11] and three bit adders. [12][13][14][15][16][17] The light propagation inside 2-D PhCs lattice structure of an optical full adder is obtained in simulation as a sinusoidal wave (indicated by blue and red color) within the created defect crystal waveguides and cavities.…”

Section: Introductionmentioning

confidence: 99%

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Investigation of light behavior of all optical full adders in two‐dimensional photonic crystals

Sonth¹,

Soma

Gowre³

2020

Micro & Optical Tech Letters

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In this article, an optical full adder is investigated in terms of light flow inside the two‐dimensional (2‐D) crystal lattice waveguide structures. The phenomenon such as resonance, splitter, and combiner based on the principle of constructive and destructive interference is used in the modeling of all optical full adders. Also, defects are introduced in the junction of the waveguide structures to pass/stop light wave inside the waveguide structure. The designed full adder structure in 2‐D photonic crystals (PhCs) occupies an area of 382.91 μm2 and maximum light confinement at the Sum and Cout output ports are 0.52 and 0.6 arbitrary unit (a.u.), respectively. The response time of the full adder structure is about 0.25 ps and the maximum contrast ratio achieved at the Sum is 7.16 dB and Cout is 5.74 dB. RSoft FullWAVE simulation tool is used to perform a full‐vector simulation of photonic structures.

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Section: Resultsmentioning

confidence: 59%

Section: Introductionmentioning

confidence: 99%

Investigation of light behavior of all optical full adders in two‐dimensional photonic crystals

Sonth¹,

Soma

Gowre³

2020

Micro & Optical Tech Letters

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“…Thus, waveguides in a PhC can be created by removing one or more rows of dielectric rods. PhC-based structures are excellent choices for designing many types of optical devices such as optical filters [3][4][5][6][7][8], PhC fibers [9][10][11][12][13][14][15][16][17][18], multiplexers and demultiplexers [19][20][21][22][23][24][25][26], encoders and decoders [27][28][29][30], switches [31][32][33][34][35][36], logic gates [37][38][39][40][41][42], analog to digital converters (ADCs) [43][44][45][46][47][48][49], and sensors [50]…”

Section: Photonic Sensorsmentioning

confidence: 99%

A Novel All-Optical Sensor Design Based on a Tunable Resonant Nanocavity in Photonic Crystal Microstructure Applicable in MEMS Accelerometers

et al. 2020

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In view of the large scientific and technical interest in the MEMS accelerometer sensor and the limitations of capacitive, resistive piezo, and piezoelectric methods, we focus on the measurement of the seismic mass displacement using a novel design of the all-optical sensor (AOS). The proposed AOS consists of two waveguides and a ring resonator in a two-dimensional rod-based photonic crystal (PhC) microstructure, and a holder which connects the central rod of a nanocavity to a proof mass. The photonic band structure of the AOS is calculated with the plane-wave expansion approach for TE and TM polarization modes, and the light wave propagation inside the sensor is analyzed by solving Maxwell’s equations using the finite-difference time-domain method. The results of our simulations demonstrate that the fundamental PhC has a free spectral range of about 730 nm covering the optical communication wavelength-bands. Simulations also show that the AOS has the resonant peak of 0.8 at 1.644µm, quality factor of 3288, full width at half maximum of 0.5nm, and figure of merit of 0.97. Furthermore, for the maximum 200nm nanocavity displacements in the x- or y-direction, the resonant wavelengths shift to 1.618µm and 1.547µm, respectively. We also calculate all characteristics of the nanocavity displacement in positive and negative directions of the x-axis and y-axis. The small area of 104.35 µm2 and short propagation time of the AOS make it an interesting sensor for various applications, especially in the vehicle navigation systems and aviation safety tools.

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“…These chips can work in higher frequencies with lower consumption power compared to the nowadays silicon chips. Using the mentioned chips together with the optical interconnects would give the possibility of designing the modern all-optical computers with a much higher speed in digital calculations [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Design and simulation of a very fast and compact all-optical Full-Subtractor based on nonlinear effect in 2D photonic crystals

2021

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In this paper, by using the non-linear effects and also destructive and constructive interferences between waveguides, we have designed and simulated an all-optical full-Subtractor based on two-dimensional photonic crystals. The proposed Subtractor has a very simple structure which is composed of 33×31 silicon rods immersed in air in a square lattice and involves three input ports (bits) and an additional waveguide to exhaust the unwanted light. We imposed some defect rods to control the behavior of the light. The used non-linear material, is a doped glass with 1.4×10 − 14 m 2 /w non-linear refractive index which is very greater than the non-linearity refractive index of silicon, 3.46×10 − 20 m 2 /w. Since the proposed structure is very simple and compact, it can be applicable in optical integrated circuits and optical calculations.

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Design and simulation of an all optical full-adder based on photonic crystals

Cited by 53 publications

References 21 publications

Investigation of light behavior of all optical full adders in two‐dimensional photonic crystals

Investigation of light behavior of all optical full adders in two‐dimensional photonic crystals

A Novel All-Optical Sensor Design Based on a Tunable Resonant Nanocavity in Photonic Crystal Microstructure Applicable in MEMS Accelerometers

Design and simulation of a very fast and compact all-optical Full-Subtractor based on nonlinear effect in 2D photonic crystals

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