scholarly journals Highly Transmission Efficiency of Optoelectronic Devices Using Active Hybrid Plasmonic Coupler

2021 ◽  
Author(s):  
samar elsayed elbialy ◽  
Bedir Yousif ◽  
Ahmed Samra
Keyword(s):  
Integrated Circuits ◽  
Indium Tin Oxide ◽  
Active Material ◽  
Optoelectronic Devices ◽  
Processing System ◽  
Logic Gates ◽  
Transmission Efficiency ◽  
Signal Processing System ◽  
Wavelength Division ◽  
Switching Matrix

Abstract This paper discusses modeling and optimizing the performance of hybrid plasmonic bidirectional coupler which is used as a basic building block in modeling highly transmission efficiency of optoelectronic devices such as filter, wavelength division multiplexer, logic gates and switching matrix with a help of an active material (indium tin oxide) that has an electrically-adjustable permittivity. All the proposed devices satisfied high transmission efficiencies at the desired output ports over a suitable wavelength range. The realized structures are characterized and simulated by 3D finite-difference time-domain (FDTD). The components would be useful in the optical interconnect networks, photonic integrated circuits and signal processing system.

Investigation on Ultra-compact 2DPC Coarse Wavelength Division Demultiplexer

2021 ◽  
Author(s):  
Venkatachalam Kannaiyan ◽  
Sriram Kumar D ◽  
Robinson S
Keyword(s):  
Integrated Circuits ◽  
Wavelength Division Multiplexing ◽  
Photonic Band Gap ◽  
Fdtd Method ◽  
Spectral Width ◽  
Transmission Efficiency ◽  
Circular Ring ◽  
Channel Spacing ◽  
Wavelength Division ◽  
Functional Parameters

Abstract A two dimensional Photonic Crystal (2DPC) based eight channel wavelength division demultiplexer is proposed and designed for Coarse Wavelength Division Multiplexing (CWDM) applications. The circular ring resonator, channel selector, circulator rod, L bend waveguide and linear bus waveguide are essential parts of the proposed system. The system’s functional parameters such as Transmission efficiency, resonant wavelength, spectral width, channel spacing, Quality factor and crosstalk are investigated in this paper. The eight different wavelengths of channels are filtered out by altering the size of channel selector rod, setting the radius of the circle shaped cavity and relative refractive index of circulator rod. Initially the Photonic Band gap (PBG) is manipulated by applying Plane Wave Expansion (PWE) method of the 2DPC structure. The functional parameters are analysed by Finite Difference Time Domain (FDTD) method in periodic and non-periodic structure of the proposed system to arrive normalized transmission spectrum. The resonant wavelengths of designed eight paths of the device are varying from 1420nm to 1460nm with average spectral width and channel spacing are 5.8nm, 5.6nm respectively. The footprint of the device is 286.84µm2. Hence this small device can be implemented for CWDM systems in Photonic Integrated Circuits (PIC).

Loss-Less Elliptical Channel Drop Filter for WDM Applications

2019 ◽  
Vol 40 (4) ◽  
pp. 379-384 ◽  
Author(s):  
S. Naghizade ◽  
S. M. Sattari-Esfahlan
Keyword(s):  
Integrated Circuits ◽  
Wavelength Division Multiplexing ◽  
Optical Filter ◽  
Resonance Wavelength ◽  
Transmission Efficiency ◽  
Ring Resonators ◽  
Physical Parameters ◽  
Wavelength Division ◽  
Filter Performance ◽  
Two Parameters

Abstract In this paper, we proposed optical filter based on two-dimensional photonic crystal elliptical channel for wavelength division multiplexing. We employed ring resonator with ellipse shaped core in proposed structure. The resonance wavelength of the ring resonators depends on two parameters: refractive index and radius of dielectric rods. We investigate the physical parameters governing the filter performance. Our results show that the transmission efficiency is 100 % due to nearly zero reflection and loss in channel. Band width of 4 nm and quality factor of 389 is obtained for filter. Also, the total footprint of proposed structure is 230.4 µm2 which makes it suitable for all optical integrated circuits.

Optical-reconfigurable carbon nanotube and indium-tin-oxide complementary thin-film transistor logic gates

Nanoscale ◽  
2018 ◽  
Vol 10 (27) ◽  
pp. 13122-13129 ◽  
Author(s):  
Jianping Zou ◽  
Kang Zhang ◽  
Weifan Cai ◽  
Tupei Chen ◽  
Arokia Nathan ◽  
...  
Keyword(s):  
Thin Film ◽  
Carbon Nanotube ◽  
Integrated Circuits ◽  
Tin Oxide ◽  
Indium Tin Oxide ◽  
Thin Film Transistor ◽  
Logic Gates ◽  
Reconfigurable Logic ◽  
Optoelectronic Integrated Circuits ◽  
Logic Operations

Optical reconfigurable logic operations using hybrid integrated CNT/ITO-TFT logic gates provide the potential to construct optoelectronic integrated circuits with diversified functions.

scholarly journals Development of the Heterodyne Laser Encoder System for the X–Y Positioning Stage

Sensors ◽  
2021 ◽  
Vol 21 (17) ◽  
pp. 5775
Author(s):  
Chung-Ping Chang ◽  
Tsung-Chun Tu ◽  
Siang-Ruei Huang ◽  
Yung-Cheng Wang ◽  
Syuan-Cheng Chang
Keyword(s):  
Integrated Circuits ◽  
Processing System ◽  
Zero Point ◽  
Geometric Errors ◽  
Positioning Error ◽  
Signal Processing System ◽  
Differential Signal ◽  
Positioning Stage ◽  
Signal Type ◽  
Abbe Error

This investigation develops a laser encoder system based on a heterodyne laser interferometer. For eliminating geometric errors, the optical structure of the proposed encoder system was carried out with the internal zero-point method. The designed structure can eliminate the geometric errors, including positioning error, straightness error, squareness error, and Abbe error of the positioning stage. The signal processing system is composed of commercial integrated circuits (ICs). The signal type of the proposed encoding system is a differential signal that is compatible with most motion control systems. The proposed encoder system is embedded in a two-dimensional positioning stage. By the experimental results of the positioning test in the measuring range of 27 mm × 27 mm, with a resolution of 15.8 nm, the maximum values of the positioning error and standard deviation are 12.64 nm and 126.4 nm, respectively, in the positioning experiments. The result shows that the proposed encoder system can fit the positioning requirements of the optoelectronic and semiconductor industries.

scholarly journals Digital logic gates in soft, conductive mechanical metamaterials

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Charles El Helou ◽  
Philip R. Buskohl ◽  
Christopher E. Tabor ◽  
Ryan L. Harne
Keyword(s):  
Integrated Circuits ◽  
Electronic Materials ◽  
Polymer Networks ◽  
Conductive Polymer ◽  
Network Connectivity ◽  
Logic Gates ◽  
Boolean Logic ◽  
Digital Logic ◽  
Mechanical Metamaterials ◽  
Logic Operations

AbstractIntegrated circuits utilize networked logic gates to compute Boolean logic operations that are the foundation of modern computation and electronics. With the emergence of flexible electronic materials and devices, an opportunity exists to formulate digital logic from compliant, conductive materials. Here, we introduce a general method of leveraging cellular, mechanical metamaterials composed of conductive polymers to realize all digital logic gates and gate assemblies. We establish a method for applying conductive polymer networks to metamaterial constituents and correlate mechanical buckling modes with network connectivity. With this foundation, each of the conventional logic gates is realized in an equivalent mechanical metamaterial, leading to soft, conductive matter that thinks about applied mechanical stress. These findings may advance the growing fields of soft robotics and smart mechanical matter, and may be leveraged across length scales and physics.

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