Graphene based photonic crystal optical filter: Design and exploration of the tunability

2019 ◽  
Vol 383 (21) ◽  
pp. 2551-2560 ◽  
Author(s):  
Fatemeh Ghasemi ◽  
Samad Roshan Entezar ◽  
Sepehr Razi
Keyword(s):  
Photonic Crystal ◽  
Filter Design ◽  
Optical Filter

Design and optimization of two dimensional photonic crystal based optical filter

2015 ◽  
Vol 24 (03) ◽  
pp. 1550027 ◽  
Author(s):  
G. Rajalakshmi ◽  
A. Sivanantha Raja ◽  
D. Shanmuga Sundar
Keyword(s):  
Refractive Index ◽  
Photonic Crystal ◽  
Transmission Spectrum ◽  
Filter Design ◽  
Photonic Band Gap ◽  
Fdtd Method ◽  
Optical Filter ◽  
Two Dimensional ◽  
Dimensional Photonic Crystal ◽  
Two Dimensional Photonic Crystal

In this paper, the channel drop filter based on two dimensional photonic crystal is proposed. The structure is made of silicon rods with the refractive index n1 = 3.4641 which are perforated in air with refractive index n2 = 1. The simulation results are obtained using 2D finite difference time domain (FDTD) method. The photonic band gap is calculated by plane wave expansion solver method. Resonant mode of the ring resonator and the filter transmission spectrum is calculated using 2D FDTD method. Full width half maximum (FWHM) bandwidth of the filter at the output transmission spectrum from 1.508 μm to 1.512 μm is 4 nm. The quality factor of the filter is 377.5 and the proposed filter design is around 21 × 15 μm which is suitable for photonic integrated circuits.

Optical filter design for multiwavelength erbium-doped fiber ring lasers

2002 ◽  
Vol 208 (1-3) ◽  
pp. 167-172 ◽  
Author(s):  
Silvia Abad ◽  
Manuel López-Amo ◽  
Sebastián Jarabo
Keyword(s):  
Filter Design ◽  
Optical Filter ◽  
Fiber Ring ◽  
Fiber Ring Lasers ◽  
Ring Lasers ◽  
Erbium Doped

scholarly journals Phase-resolved pulse propagation through metallic photonic crystal slabs: plasmonic slow light

2017 ◽  
Vol 375 (2090) ◽  
pp. 20160065 ◽  
Author(s):  
Anja Schönhardt ◽  
Dietmar Nau ◽  
Christina Bauer ◽  
André Christ ◽  
Hedi Gräbeldinger ◽  
...  
Keyword(s):  
Electromagnetic Field ◽  
Photonic Crystal ◽  
Slow Light ◽  
Filter Design ◽  
Dispersion Compensation ◽  
Transverse Magnetic ◽  
Spectral Phase ◽  
Group Delay Dispersion ◽  
Transmission Amplitude ◽  
Metallic Photonic Crystal

We characterized the electromagnetic field of ultra-short laser pulses after propagation through metallic photonic crystal structures featuring photonic and plasmonic resonances. The complete pulse information, i.e. the envelope and phase of the electromagnetic field, was measured using the technique of cross-correlation frequency resolved optical gating. In good agreement, measurements and scattering matrix simulations show a dispersive behaviour of the spectral phase at the position of the resonances. Asymmetric Fano-type resonances go along with asymmetric phase characteristics. Furthermore, the spectral phase is used to calculate the dispersion of the sample and possible applications in dispersion compensation are investigated. Group refractive indices of 700 and 70 and group delay dispersion values of 90 000 fs 2 and 5000 fs 2 are achieved in transverse electric and transverse magnetic polarization, respectively. The behaviour of extinction and spectral phase can be understood from an intuitive model using the complex transmission amplitude. An associated depiction in the complex plane is a useful approach in this context. This method promises to be valuable also in photonic crystal and filter design, for example, with regards to the symmetrization of the resonances. This article is part of the themed issue ‘New horizons for nanophotonics’.

Design of a High-Quality Optical Filter Based on 2D Photonic Crystal Ring Resonator for WDM Systems

2020 ◽  
Vol 41 (4) ◽  
pp. 355-361
Author(s):  
Vahid Fallahi ◽  
Mahmood Seifouri
Keyword(s):  
Photonic Crystal ◽  
Quality Factor ◽  
Transmission Coefficient ◽  
Lattice Constant ◽  
Ring Resonator ◽  
Photonic Band Gap ◽  
Structural Parameters ◽  
Optical Filter ◽  
Expansion Method ◽  
Square Lattice

AbstractIn this article, a 2D photonic crystal (PC)-based optical filter has been designed using a PC ring resonator. The resonator used is of square type with a square lattice constant, which has been designed by increasing the radius of the inner rods of the resonator. The filter designed can separate the light of the wavelength of 1545.3 nm with a transmission coefficient of 98 %. The bandwidth of the above wavelength is equal to 0.5 nm and hence the quality factor of the device at this wavelength is equal to 3091. The effects of the structural parameters, such as the refractive index, the lattice constant, the radius of the dielectric rods, the radius of the inner rods of the resonator on the behavior of the proposed device, are fully investigated. To obtain the photonic band gap, the plane wave expansion method is used. In addition, the finite difference time domain method is used to examine, simulate, and to obtain the output spectrum of the structure. The designed structure has both high transmission coefficient and quality factor. Comparatively speaking, it is also simple to design which justifies its use in other photonic crystal-based optical devices.

Tunability of multichannel optical filter based on magnetized one-dimensional plasma photonic crystal

2015 ◽  
Vol 22 (10) ◽  
pp. 103507 ◽  
Author(s):  
K. Jamshidi-Ghaleh ◽  
F. Karami-Garehgeshlagi ◽  
A. A. Mazloom
Keyword(s):  
Photonic Crystal ◽  
Optical Filter ◽  
One Dimensional ◽  
Plasma Photonic Crystal

Quasi-periodic photonic crystal Fabry–Perot optical filter based on Si/SiO2 for visible-laser spectral selectivity

2018 ◽  
Vol 51 (22) ◽  
pp. 225103 ◽  
Author(s):  
Dong Qi ◽  
Xian Wang ◽  
Yongzhi Cheng ◽  
Fu Chen ◽  
Lei Liu ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Optical Filter ◽  
Spectral Selectivity ◽  
Fabry Perot ◽  
Visible Laser

An improved optical parameter optimisation approach using Taguchi and genetic algorithm for high transmission optical filter design

Optik ◽  
2019 ◽  
Vol 182 ◽  
pp. 382-392 ◽  
Author(s):  
Sunita Parinam ◽  
Mukesh Kumar ◽  
Neelam Kumari ◽  
Vinod Karar ◽  
Amit L. Sharma
Keyword(s):  
Genetic Algorithm ◽  
Filter Design ◽  
Optical Filter ◽  
Optical Parameter ◽  
High Transmission ◽  
Parameter Optimisation
Sign in / Sign up

Export Citation Format

Share Document