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.

A New Two-Dimensional Photonic Crystal Channel Drop Filter Based on Two-Resonant Cavities

2013 ◽  
Vol 760-762 ◽  
pp. 397-400
Author(s):  
Ying Hu ◽  
Gui Qiang Liu ◽  
Xiang Nan Zhang ◽  
Zheng Jie Cai
Keyword(s):  
Photonic Crystal ◽  
Integrated Circuits ◽  
Wavelength Division Multiplexing ◽  
Communication Systems ◽  
Photonic Band Gap ◽  
Fdtd Method ◽  
Two Dimensional ◽  
Perfectly Matched Layers ◽  
Dimensional Photonic Crystal ◽  
Two Dimensional Photonic Crystal

In this paper, a channel drop filter (CDF) is composed of two cubic lattice circular ring resonator cavities and point micro-cavities in a two-dimensional photonic crystal. The photonic band gap is calculated using the plane wave expansion (PWE) method and the optical characteristics of proposed structure are studying by the finite difference time domain (FDTD) method with perfectly matched layers (PMLs) acting as the boundary conditions . Two different wavelengths centered at 1773 nm and 1742 nm have been successful separation in this CDF. These demonstrate that our proposed structure is suitable for photonic integrated circuits (PICs) and coarse wavelength division multiplexing (WDM) optical communication systems.

Tunable High Performance 16-Channel Demultiplexer on 2D Photonic Crystal Ring Resonator Operating at Telecom Wavelengths

2018 ◽  
Vol 0 (0) ◽  
Author(s):  
S. Naghizade ◽  
S. M. Sattari-Esfahlan
Keyword(s):  
Photonic Crystal ◽  
Wavelength Division Multiplexing ◽  
High Performance ◽  
Ring Resonator ◽  
Photonic Band Gap ◽  
Fdtd Method ◽  
Two Dimensional ◽  
Dimensional Photonic Crystal ◽  
Two Dimensional Photonic Crystal ◽  
Photonic Crystal Ring Resonator

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.

Kz component dependence of photonic band gap in two-dimensional photonic crystal

2011 ◽  
Author(s):  
Xuan Guo ◽  
Lihong Han ◽  
Guifang Yuan ◽  
Zhongyuan Yu ◽  
Yumin Liu ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Band Gap ◽  
Photonic Band Gap ◽  
Two Dimensional ◽  
Dimensional Photonic Crystal ◽  
Two Dimensional Photonic Crystal ◽  
Photonic Band

Analyzing the Modality of Two-Dimensional Photonic Crystal Fiber Optical Micro-Resonators by Equivalent Refractive Index Mode

2010 ◽  
Vol 44-47 ◽  
pp. 2131-2135
Author(s):  
Feng Wang ◽  
Chang Yu Ren ◽  
Dun Liang Ren ◽  
Bing Sheng Liu ◽  
Ren Xue Han
Keyword(s):  
Refractive Index ◽  
Photonic Crystal ◽  
Light Guide ◽  
Two Dimensional ◽  
Dimensional Photonic Crystal ◽  
Crystal Fiber ◽  
Resonator Structure ◽  
Lattice Arrangement ◽  
Estimate Method ◽  
Two Dimensional Photonic Crystal

This paper analyzes the modality of two-dimensional photonic crystal micro-resonators by adopting equivalent refractive index mode. In this paper, it controls the optical field distribution only through altering the thickness of light guide layer, while the parameter like resonator structure and crystal lattice arrangement remain stable. It discusses that it would arrive at a satisfactory photon locality while the refractive index of light guide layer material is gallium nitride , the thickness of light guide layer is and its equivalent refractive index is 2.1.This reveals the influence of micro-resonator light guide layer’s thickness towards the modality, providing a preferable pre-estimate method for the actual research of micro-resonators with higher quality.

Sign in / Sign up

Export Citation Format

Share Document