scholarly journals Enhancement of unidirectional transmission through the coupling of nonlinear photonic crystal defects

2006 ◽  
Vol 14 (6) ◽  
pp. 2429 ◽  
Author(s):  
Xu-Sheng Lin ◽  
Wei-Qing Wu ◽  
Hui Zhou ◽  
Kai-Feng Zhou ◽  
Sheng Lan
Keyword(s):  
Photonic Crystal ◽  
Crystal Defects ◽  
Nonlinear Photonic Crystal ◽  
Unidirectional Transmission

An all optical photonic crystal half adder suitable for optical processing applications

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Hamed Azhdari ◽  
Sahel Javahernia
Keyword(s):  
Photonic Crystal ◽  
Optical Waveguides ◽  
High Speed ◽  
Building Blocks ◽  
Optical Signal ◽  
Ring Resonators ◽  
Optical Processing ◽  
Nonlinear Photonic Crystal ◽  
Half Adder ◽  
All Optical

Abstract Increasing the speed of operation in all optical signal processing is very important. For reaching this goal one needs high speed optical devices. Optical half adders are one of the important building blocks required in optical processing. In this paper an optical half adder was proposed by combining nonlinear photonic crystal ring resonators with optical waveguides. Finite difference time domain method wase used for simulating the final structure. The simulation results confirmed that the rise time for the proposed structure is about 1 ps.

All optical NAND/NOR and majority gates using nonlinear photonic crystal ring resonator

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Hassan Mamnoon-Sofiani ◽  
Sahel Javahernia
Keyword(s):  
Photonic Crystal ◽  
Ring Resonator ◽  
Logic Gates ◽  
Building Blocks ◽  
Optical Data ◽  
Optical Logic ◽  
Optical Logic Gates ◽  
Nonlinear Photonic Crystal ◽  
All Optical ◽  
Photonic Crystal Ring Resonator

Abstract All optical logic gates are building blocks for all optical data processors. One way of designing optical logic gates is using threshold switching which can be realized by combining an optical resonator with nonlinear Kerr effect. In this paper we showed that a novel structure consisting of nonlinear photonic crystal ring resonator which can be used for realizing optical NAND/NOR and majority gates. The delay time of the proposed NAND/NOR and majority gates are 2.5 ps and 1.5 ps respectively. Finite difference time domain and plane wave expansion methods were used for simulating the proposed optical logic gates. The total footprint of the proposed structure is about 988 μm2.

Birefringence-induced splitting of the zero-dispersion wavelength in nonlinear photonic crystal fibers

2004 ◽  
Vol 29 (1) ◽  
pp. 14 ◽  
Author(s):  
K. P. Hansen ◽  
A. Petersson ◽  
J. R. Folkenberg ◽  
M. Albertsen ◽  
A. Bjarklev
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fibers ◽  
Nonlinear Photonic Crystal ◽  
Dispersion Wavelength ◽  
Zero Dispersion Wavelength ◽  
Crystal Fibers
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