scholarly journals A 5-Channel DWDM Demultiplexer in C Band on Silicon Photonic Crystal Slab: Design and Numerical Analysis

Author(s):  
Leninbabu Dhandrapati ◽  
Gopalkrishna Hegde ◽  
Srinivas Talabattula ◽  
sreenivasulu Tupakula

Abstract In this work we propose a novel design of 5-channel DWDM demultiplexer and, numerical analysis of its optimal design parameters and device performance is presented. Photonic crystal hexagonal ring resonators of airholes on a silicon slab are used as channel drop filters. Wavelength controlling is achieved by fine tuning of coupling holes outside each ring resonator. For the proposed design, the resolved wavelengths are in the range of 1535 to 1539nm, where Erbium Doped Fiber Amplifiers are applicable. The average coupling efficiency and cross talk are found to be 72.4% and -18.31dB, respectively. Photonic bandgap computation is performed by using plane wave expansion method and spectral characteristics are obtained by applying 3D finite difference time domain method.

2014 ◽  
Author(s):  
Yuan-Yuan Lin ◽  
Xi-Yao Chen ◽  
Jun-Zhen Jiang ◽  
Ping Fu ◽  
Biao Chen ◽  
...  

2012 ◽  
Vol 29 (12) ◽  
pp. 124201 ◽  
Author(s):  
Dong-Xia Zhuang ◽  
Xi-Yao Chen ◽  
Jun-Jun Li ◽  
Ze-Xuan Qiang ◽  
Jun-Zhen Jiang ◽  
...  

2021 ◽  
Author(s):  
Dalai Gowri sankar Rao ◽  
Seeta Rama Raju Karyabhattu ◽  
Sandip Swarnakar ◽  
Santosh Kumar

Abstract Ultra-compact all-optical AND logic gate is realized for optical processing and photonic integrated devices with two-dimensional photonic crystal waveguides based on beam interference principle. The performance of the structure is examined and evaluated by optimized parameters such as refractive index and silicon rod radius. The results obtained from a numerical calculation using the finite-difference time-domain (FDTD) method and plane wave expansion method. The photonic crystal based all-optical AND logic gate has benefits of compact size as 38.88 μ𝑚2, operated at low power levels, high transmission ratio and good time response as 0.124 ps. Associated with conventional semiconductor optical amplifiers, Mach-Zehnder interferometer and photonic crystal ring resonators proposed methodology provides better performance with a high achieved more than 97% transmission ratio, at a wavelength of 1.55 μm.


2011 ◽  
Vol 284 (24) ◽  
pp. 5839-5843 ◽  
Author(s):  
Junjun Li ◽  
Xiyao Chen ◽  
Zexuan Qiang ◽  
Junzhen Jiang ◽  
Guimin Lin ◽  
...  

PIERS Online ◽  
2010 ◽  
Vol 6 (3) ◽  
pp. 273-278 ◽  
Author(s):  
David J. Moss ◽  
B. Corcoran ◽  
C. Monat ◽  
Christian Grillet ◽  
T. P. White ◽  
...  

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