Optical filter with very large stopband (≈300 nm) based on a photonic-crystal vertical-directional coupler

2009 ◽  
Vol 34 (21) ◽  
pp. 3292 ◽  
Author(s):  
M. Grande ◽  
L. O'Faolain ◽  
T. P. White ◽  
M. Spurny ◽  
A. D'Orazio ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Directional Coupler ◽  
Optical Filter

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.

Three Waveguides Directional Coupler Based on Two Dimensional Square Lattice Photonic Crystal

2016 ◽  
Vol 36 (3) ◽  
pp. 0323002
Author(s):  
苏康 Su Kang ◽  
王梓名 Wang Ziming ◽  
刘建军 Liu Jianjun
Keyword(s):  
Photonic Crystal ◽  
Directional Coupler ◽  
Square Lattice ◽  
Two Dimensional

Ultra-wideband optical diode based on photonic crystal 90° bend and directional coupler

2014 ◽  
Vol 12 (10) ◽  
pp. 102301-102304 ◽  
Author(s):  
Jin Lu Jin Lu ◽  
Hongliang Ren Hongliang Ren ◽  
Shuqin Guo Shuqin Guo ◽  
Dongyuan Gu Dongyuan Gu ◽  
Hao Wen Hao Wen ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Directional Coupler ◽  
Ultra Wideband ◽  
Optical Diode

The Directional Coupler on The Basis of The Runway Type Photonic Crystal Waveguide

2013 ◽  
Vol 34 (3) ◽  
pp. 375-381
Author(s):  
崔乃迪 CUI Nai-di ◽  
寇婕婷 KOU Jie-ting ◽  
梁静秋 LIANG Jing-qiu ◽  
王维彪 WANG Wei-biao ◽  
郭进 GUO Jin ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Directional Coupler ◽  
Photonic Crystal Waveguide

Kerr nonlinear switch based on ultra-compact photonic crystal directional coupler

Optik ◽  
2011 ◽  
Vol 122 (6) ◽  
pp. 502-505 ◽  
Author(s):  
Azadeh Taher Rahmati ◽  
Nosrat Granpayeh
Keyword(s):  
Photonic Crystal ◽  
Directional Coupler

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.

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
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