Channel Drop Filter by using Tetragonal Photonic Crystal Ring Resonator by FDTD Method

AbstractHere, we proposed a high performance 16-channel optical demultiplexer using two-dimensional photonic crystal ring resonator for telecommunication systems. By plane wave expansion (PWE) method the photonic band gap (PBG) of proposed structure calculated. Then, with finite difference time domain (FDTD) method the performance parameters of designed two-dimensional photonic crystal demultiplexer are analyzed. It is found that the channel wavelength of wavelength-division multiplexing (WDM) is truly tuned by changing the structure parameters of the demultiplexer and position of rod. Output peaks located in the optical communication C-band and L-band with the transmission efficiency of 99 %. The demultiplexer exhibits high-quality factor of 5176, and spectral width of 0.3. Very low crosstalk values are between −19 dB and −90 dB where, device only occupies an area of 1708.65 µm2. The proposed compact 16-channel demultiplexer can find more applications for the ultra-compact WDM systems in highly integrated telecommunication circuits.

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Design of All Optical XOR Gate based on Photonic Crystal Ring Resonator

Journal of Optical Communications ◽

10.1515/joc-2017-0142 ◽

2019 ◽

Vol 41 (1) ◽

pp. 51-56 ◽

Cited By ~ 5

Author(s):

Sandip Swarnakar ◽

Sapna Rathi ◽

Santosh Kumar

Keyword(s):

Photonic Crystal ◽

Photonic Crystals ◽

Ring Resonator ◽

Fdtd Method ◽

Circular Ring ◽

Square Lattice ◽

Optical Logic ◽

Xor Gate ◽

All Optical ◽

Photonic Crystal Ring Resonator

Abstract The photonic crystals (PhC) play an important role in building all optical logic devices and also recommended as solution for opto-electronic bottleneck in terms of speed and size. This paper put forward a design of XOR gate using Photonic Crystal Ring Resonator (PCRR). The ring resonator is a device which provides output on the basis of coupling of mode fields from a linear waveguide to circular ring. The proposed work is designed using two-dimensional (2D) square lattice photonic crystals within the dimensions of $\left( {37a \times 37a} \right)$ by putting silicon (Si) rods in silica (SiO2). The study of device is carried out using finite-difference-time-domain (FDTD) method and verified using MATLAB.

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Comparison of two loop photonic crystal: ring-resonator with hexagonal and rectangular lattice structure

Journal of Optics ◽

10.1007/s12596-020-00675-7 ◽

2021 ◽

Author(s):

Harsimran Jit Kaur ◽

Phalguni Goyal

Keyword(s):

Photonic Crystal ◽

Ring Resonator ◽

Lattice Structure ◽

Rectangular Lattice ◽

Photonic Crystal Ring Resonator

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All optical NAND/NOR and majority gates using nonlinear photonic crystal ring resonator

Journal of Optical Communications ◽

10.1515/joc-2020-0246 ◽

2021 ◽

Vol 0 (0) ◽

Author(s):

Hassan Mamnoon-Sofiani ◽

Sahel Javahernia

Keyword(s):

Photonic Crystal ◽

Ring Resonator ◽

Logic Gates ◽

Building Blocks ◽

Optical Data ◽

Optical Logic ◽

Optical Logic Gates ◽

Nonlinear Photonic Crystal ◽

All Optical ◽

Photonic Crystal Ring Resonator

Abstract All optical logic gates are building blocks for all optical data processors. One way of designing optical logic gates is using threshold switching which can be realized by combining an optical resonator with nonlinear Kerr effect. In this paper we showed that a novel structure consisting of nonlinear photonic crystal ring resonator which can be used for realizing optical NAND/NOR and majority gates. The delay time of the proposed NAND/NOR and majority gates are 2.5 ps and 1.5 ps respectively. Finite difference time domain and plane wave expansion methods were used for simulating the proposed optical logic gates. The total footprint of the proposed structure is about 988 μm2.

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