scholarly journals Photonic crystal structured blue µLED with aperture size dependent data transmission performance in plastic fiber link

OSA Continuum ◽  
2020 ◽  
Vol 3 (1) ◽  
pp. 104 ◽  
Author(s):  
Yu-Hong Lin ◽  
Tung-Chin Lin ◽  
Chih-Hsien Cheng ◽  
Hao-Chung Kuo ◽  
Jian-Jang Huang ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Data Transmission ◽  
Dependent Data ◽  
Aperture Size ◽  
Transmission Performance ◽  
Size Dependent ◽  
Fiber Link

scholarly journals Research on Fractal Characterization of Data Transmission Performance of Hard Disk

2018 ◽  
Vol 173 ◽  
pp. 03035
Author(s):  
Wei Jiang ◽  
Cuicui Ji ◽  
Yuntian Dai
Keyword(s):  
Fractal Dimension ◽  
Data Transmission ◽  
Transfer Rate ◽  
Data Transfer ◽  
Fractal Theory ◽  
Hard Disk ◽  
Hard Disks ◽  
Transmission Performance ◽  
Rotating Speed ◽  
Solid State Disks

The data transfer rate is the traditional criterion for evaluating the overall performance of a hard disk. In this paper, the data transmission performance of hard disk was characterized based on fractal theory. The traditional mechanical hard disks and solid state disks with different capacities and specifications were tested and the corresponding signal graph of data transfer was analysed for the calculation of fractal dimension D. The results indicate that the process of hard disk data transfer has fractal characteristics; the fractal dimension D increases with the increase of the average transfer rate and the rotating speed of mechanical hard disk. However, there seems no direct correspondence between the fractal dimension D and the capacity of the hard disk; the larger the floating range of data transmission, the greater value of fractal dimension D.

Transmission performance of 1×2 type photonic crystal power splitter based on ring resonators

2011 ◽  
Vol 23 (10) ◽  
pp. 2795-2800
Author(s):  
吴立恒 Wu Liheng ◽  
王明红 Wang Minghong ◽  
徐明星 Xu Mingxing
Keyword(s):  
Photonic Crystal ◽  
Ring Resonators ◽  
Transmission Performance ◽  
Power Splitter

Investigation of the Effect of Moving Forklift on Data Transmission of IEEE 802.15.4 Wireless Sensor Radio

2012 ◽  
Vol 134 (4) ◽  
Author(s):  
Lei Tang ◽  
Fan Yang ◽  
Daxing Zhang ◽  
Kuang-Ching Wang ◽  
Yong Huang
Keyword(s):  
Data Transmission ◽  
Manufacturing Systems ◽  
Moving Objects ◽  
Ieee 802.15.4 ◽  
Path Loss ◽  
Sensor Data ◽  
Wireless Sensor ◽  
Packet Error Rate ◽  
Transmission Performance ◽  
Essential Components

Low-cost wireless sensors embedded in machines and plant floors are essential components for intelligent monitoring and automation in automated manufacturing systems. To enable robust and confident industrial adoption of wireless sensor systems, their data transmission performance must be guaranteed before deployment. Moving objects such as forklifts in common manufacturing settings are known to cause errors and losses in wireless sensor data transmission. As an essential step toward building wireless sensor-based manufacturing plant floor monitoring systems, this study has conducted systematic data transmission performance measurements with IEEE 802.15.4 sensors in the presence of a moving forklift. It is found that for a typical moving forklift, its path loss profile can be predicted based on its stationary path loss profile. Specifically, the path loss for a moving forklift can be adequately modeled using a two-state time-dependent model with both deterministic and random contributions. Such a two-state path loss model can be applied to adequately estimate the packet error rate in the presence of moving objects.

Fibre Optic Development at the AAO

1982 ◽  
Vol 4 (4) ◽  
pp. 477-479 ◽  
Author(s):  
P. M. Gray ◽  
M. M. Phillips ◽  
A. J. Turtle ◽  
R. Ellis
Keyword(s):  
Data Transmission ◽  
Optical Fibres ◽  
Aperture Size ◽  
Fibre Optic ◽  
Core Size ◽  
Step Index ◽  
Light Guides

Work on the development and use of optical fibres as light guides in astronomical spectroscopy has been underway at the AAO for over a year now. The fibres used are step-index polymer-clad silica with a core size of 200 microns giving an aperture size of 1.3 arcsec at the AAT f/8 focus. They are optimised for data transmission with losses below 5dB/km at a wavelength of 800 nm. The blue transmission is somewhat lower, typically 500dB/km at 300nm and 90dB/km at 400nm but over the short 2m length used these attenuations give transmissions of 79% and 96% respectively.

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