FDTD analysis of diffraction efficiency in a hologram for application in optical fiber communication

Sundaray, Madhulita; Tripathy, Sukanta Kumar; Das, Chinmay

doi:10.1016/j.ijleo.2017.10.003

Cited by 7 publications

(3 citation statements)

References 5 publications

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“…In addition, the iterative update of the electromagnetic field in the 3D FDTD algorithm also needs to satisfy the stability condition 45,46 :…”

Section: Finite Difference Time Domain Algorithmmentioning

confidence: 99%

“…In addition, the iterative update of the electromagnetic field in the 3D FDTD algorithm also needs to satisfy the stability condition 45,46 :

\begin{equation} \def\eqcellsep{&}\begin{array}{*{20}{c}} {\Delta t &lt; \dfrac{1}{{c\sqrt {\Delta {x}^2 + \Delta {y}^2 + \Delta {z}^2} }}\ } \end{array} .\end{equation}

…”

Section: Modeling and Simulationmentioning

confidence: 99%

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Enhancing light extraction efficiency of GaN LED by combining complex‐period photonic crystals with doping

Chen

Wang

2023

J Am Ceram Soc.

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The light extraction efficiency (LEE) of GaN‐based light‐emitting diodes (LEDs) was limited by intense total internal reflection and the photothermal effect. In order to solve this problem, a method to synergistically control the LEE of GaN‐based LEDs by combining the complex‐period photonic crystals (PhCs) with M (M = Al, In) material doping is proposed. The forbidden band width of two‐dimensional (2D) PhC array, three‐dimensional (3D) LED model, M doping, and electromagnetic field distribution are investigated respectively. By doping the M, the LED emission wavelength range is regulated to achieve the dual‐band emission. Furthermore, a triangular complex‐period photonic structure is introduced to establish stacked or etched PhCs models. By combining the plane wave expansion and finite difference time domain algorithm, the structural parameters of PhCs and M concentration dependent LEE are investigated, and the electromagnetic field distribution is explored also. The results show that the optimal LEEs can be achieved are 19.08% and 13.96% for blue light and ultraviolet, respectively, which are larger than that of traditional flat‐panel LED (4%). This work provides theoretical results and technical support for the design of LEDs with high luminous efficiency.

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“…In addition, the iterative update of the electromagnetic field in the 3D FDTD algorithm also needs to satisfy the stability condition 45,46 :…”

Section: Finite Difference Time Domain Algorithmmentioning

confidence: 99%

“…In addition, the iterative update of the electromagnetic field in the 3D FDTD algorithm also needs to satisfy the stability condition 45,46 :

\begin{equation} \def\eqcellsep{&}\begin{array}{*{20}{c}} {\Delta t &lt; \dfrac{1}{{c\sqrt {\Delta {x}^2 + \Delta {y}^2 + \Delta {z}^2} }}\ } \end{array} .\end{equation}

…”

Section: Modeling and Simulationmentioning

confidence: 99%

Enhancing light extraction efficiency of GaN LED by combining complex‐period photonic crystals with doping

Chen

Wang

2023

J Am Ceram Soc.

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“…[4] When employing a fine mesh during the simulation, the corresponding time step will become too small, resulting in an extremely long duration. [5] To alleviate such conditions, several unconditionally stable algorithms have been introduced to remove the CFL condition and to improve the efficiency, including alternating-direction-implicit, locally 1D, split-step procedures. [6][7][8] Notably, these are implemented by sub-step procedures to obtain the updated field components that significantly affect the accuracy and efficiency.…”

Section: Introductionmentioning

confidence: 99%

Implicit Approximate Crank–Nicolson Theory for Anisotropic Ferrite Structure Simulation with Enhanced Absorption

Xie

Jiang

et al. 2021

Advcd Theory and Sims

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To simulate ferrite structures with anisotropic characteristics efficiently, an unconditionally stable implementation is proposed by incorporating the approximate Crank–Nicolson (CN) theory and a complex‐frequency‐shifted perfectly matched layer (CFS‐PML) formulation in the finite‐difference time‐domain lattice. More specifically, the proposed implementation combines the CN approximate factorization splitting procedure with bilinear transformation in the z‐domain within the CFS‐PML regions. To simulate the unique anisotropic characteristic of the ferrite structure, the auxiliary differential equation (ADE) method, which is modified at the integer time step, is introduced during the formulation. Numerical examples are presented to demonstrate the effectiveness and efficiency theoretically and experimentally. According to the results, it can be concluded that the proposed scheme takes full advantage of the approximate CN theory, CFS‐PML formulation, and modified ADE method in terms of the considerable computational accuracy, outstanding absorbing performance, and remarkable efficiency. Moreover, it can be demonstrated that the proposed algorithm can maintain its stability with the dissatisfaction of the Courant–Friedrichs–Lewy condition.

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Optical Sensor Based on MicroSphere Coated with Agarose for Heavy Metal Ion Detection

Tripathy

Tripathy²

2022

Communications in Computer and Information Science

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FDTD analysis of diffraction efficiency in a hologram for application in optical fiber communication

Cited by 7 publications

References 5 publications

Enhancing light extraction efficiency of GaN LED by combining complex‐period photonic crystals with doping

Enhancing light extraction efficiency of GaN LED by combining complex‐period photonic crystals with doping

Implicit Approximate Crank–Nicolson Theory for Anisotropic Ferrite Structure Simulation with Enhanced Absorption

Optical Sensor Based on MicroSphere Coated with Agarose for Heavy Metal Ion Detection

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