scholarly journals Performance Analysis of Three-Wavelength Multi-Channel Photonic Crystal Filters of Different Sizes

Crystals ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 91
Author(s):  
Wei Liu ◽  
Laisheng Zhang ◽  
Fan Zhang
Keyword(s):  
Crystal Structure ◽  
Photonic Crystal ◽  
Performance Analysis ◽  
Two Dimensional ◽  
Low Loss ◽  
Channel Interference ◽  
Multi Wavelength ◽  
Filtering Efficiency ◽  
Structure Complexity ◽  
Channel Filter

Multi-wavelength and multi-channel photonic crystal filters are designed with different sizes considered by using a two-dimensional quadric lattice photonic crystal structure to solve the problems of a multi-channel filter with structure complexity, single-wavelength download, and channel interference. The designed filter consists of a waveguide, reflection wall, multimode microcavity, and output port. Each port can download three different wavelengths. In the communication band from 1.500 to 1.600 μm, the transmittance of each channel is greater than 90%, and the filtering efficiency is high. The size of the non-simplified filter is only 27 μm × 17 μm. On the premise of ensuring low loss transmittance (that is, the transmittance of each port is changed by no more than 10% at the wavelength from 1.5–1.6 μm), the size of the filter can reach 15 μm × 7 μm. This design will greatly reduce the overall structure size of the filter and is suitable for multiplexing and demultiplexing in WDM systems.

scholarly journals Rational Design and Simulation of Two-Dimensional Perovskite Photonic Crystal Absorption Layers Enabling Improved Light Absorption Efficiency for Solar Cells

Energies ◽  
2021 ◽  
Vol 14 (9) ◽  
pp. 2460
Author(s):  
Jian Zou ◽  
Mengnan Liu ◽  
Shuyu Tan ◽  
Zhijie Bi ◽  
Yong Wan ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Solar Cells ◽  
Photonic Crystal ◽  
Incident Light ◽  
Absorption Efficiency ◽  
Utilization Efficiency ◽  
Photonic Crystal Structure ◽  
Two Dimensional ◽  
Photoelectric Conversion ◽  
Absorption Layer

A two-dimensional perovskite photonic crystal structure of Methylamine lead iodide (CH3NH3PbI3, MAPbI3) is rationally designed as the absorption layer for solar cells. The photonic crystal (PC) structure possesses the distinct “slow light” and band gap effect, leading to the increased absorption efficiency of the absorption layer, and thus the increased photoelectric conversion efficiency of the battery. Simulation results indicate that the best absorption efficiency can be achieved when the scattering element of indium arsenide (InAs) cylinder is arranged in the absorption layer in the form of tetragonal lattice with the height of 0.6 μm, the diameter of 0.24 μm, and the lattice constant of 0.4 μm. In the wide wavelength range of 400–1200 nm, the absorption efficiency can be reached up to 82.5%, which is 70.1% higher than that of the absorption layer without the photonic crystal structure. In addition, the absorption layer with photonic crystal structure has good adaptability to the incident light angle, presenting the stable absorption efficiency of 80% in the wide incident range of 0–80°. The results demonstrate that the absorption layer with photonic crystal structure can realize the wide spectrum, wide angle, and high absorption of incident light, resulting in the increased utilization efficiency of solar energy.

Low-loss, wide-angle Y splitter at ∼16-µm wavelengths built with a two-dimensional photonic crystal

2002 ◽  
Vol 27 (16) ◽  
pp. 1400 ◽  
Author(s):  
S. Y. Lin ◽  
E. Chow ◽  
J. Bur ◽  
S. G. Johnson ◽  
J. D. Joannopoulos
Keyword(s):  
Photonic Crystal ◽  
Wide Angle ◽  
Two Dimensional ◽  
Low Loss ◽  
Dimensional Photonic Crystal ◽  
Two Dimensional Photonic Crystal

scholarly journals 3D printed low-loss THz waveguide based on Kagome photonic crystal structure

2016 ◽  
Vol 24 (20) ◽  
pp. 22454 ◽  
Author(s):  
Jing Yang ◽  
Jiayu Zhao ◽  
Cheng Gong ◽  
Haolin Tian ◽  
Lu Sun ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Photonic Crystal ◽  
Photonic Crystal Structure ◽  
Low Loss ◽  
3D Printed

Coherent two-dimensional lasing action in surface-emitting laser with triangular-lattice photonic crystal structure

1999 ◽  
Vol 75 (3) ◽  
pp. 316-318 ◽  
Author(s):  
Masahiro Imada ◽  
Susumu Noda ◽  
Alongkarn Chutinan ◽  
Takashi Tokuda ◽  
Michio Murata ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Photonic Crystal ◽  
Triangular Lattice ◽  
Photonic Crystal Structure ◽  
Two Dimensional ◽  
Surface Emitting Laser

Investigating Fill Factor Effect on Brillouin Zone of Metamaterial-based 2D Photonic Crystal

2021 ◽  
Vol 13 ◽  
Author(s):  
Arpan Deyasi ◽  
Ratul Ghosh ◽  
Papri Chakraborty ◽  
Anwesha Adhikary ◽  
Angsuman Sarkar
Keyword(s):  
Crystal Structure ◽  
Wave Propagation ◽  
Photonic Crystal ◽  
Plane Wave ◽  
Brillouin Zone ◽  
Fill Factor ◽  
Negative Permittivity ◽  
Two Dimensional ◽  
Bandgap Width ◽  
Two Dimensional Photonic Crystal

: Fill factor in the negative permittivity materials are tailored within physically permissible limit to characterize the Brillouin zone for two-dimensional crystal under propagation of both s and p-polarized waves. Two lowermost bandgaps are computed along with corresponding midband frequencies, where plane wave expansion method is invoked for computational purpose. Rectangular geometrical shape is considered for the simulation, and all the results are calculated inside the ‘Γ’ point and ‘X’ point of first Brillouin zone. Simulated findings depict monotonous variations of both bandgap width as well as midband frequency for higher negative permittivity materials, when magnitude of fill factor is comparatively low, for both TE (Transverse Electric)and TM (Transverse Magnetic)mode of propagations. Lower negative permittivity leads to random fluctuations which makes it unsuitable for photonic component design. Multiple forbidden regions may be observed for some specific artificial materials which can be utilized in antenna or multi-channel filter design in higher THz region. Aims: The present paper aims to compute the shape of the first Brillouin zone from the fill factor for a two-dimensional photonic crystal structure. Background: EBG (Electromagnetic Band gap) of a photonic crystal plays a major role in determining its candidature for optical applications, which is critically controlled by fill factor. Therefore, it is significant to investigate the effect of F.F on the wave propagation characteristics of 2D PhC(Two-dimensional photonic crystal). Objective: Investigation of metamaterial based photonic crystal structure for electromagnetic bandgap analysis in the desired spectrum of interest as a function of fill factor inside the first Brillouin zone Method:Maxwell’s equations are solved using plane wave propagation method to solve the problem, and simulation is carried out in MATLAB® software. Result: Both the first and second photonic bandgaps are simultaneously computed with variation of refractive index differences of the constituent materials as well as with the fill factors. Results are extremely significant about the formation of narrowband and wideband filters on certain material combinations and structural designs. Conclusion: Better tenability is observed for metamaterial structure compared to conventional positive index materials, and fill factor has a great role in shaping the Brillouin zone and corresponding bandgap width.

Sign in / Sign up

Export Citation Format

Share Document