scholarly journals Analysis of Polarization Characteristics of the Wire Grid Polarizer According to Pattern shapes and incident angle

2014 ◽  
Vol 13 (3) ◽  
pp. 111-117
Author(s):  
JiYun Jeong ◽  
YoungTae Cho ◽  
Yoon-Gyo Jung
Keyword(s):  
Incident Angle ◽  
Wire Grid ◽  
Polarization Characteristics ◽  
The Wire ◽  
Wire Grid Polarizer

Incident angle and temperature dependence of WSi wire-grid polarizer

2014 ◽  
Vol 63 ◽  
pp. 92-96 ◽  
Author(s):  
Itsunari Yamada ◽  
Junji Nishii ◽  
Mitsunori Saito
Keyword(s):  
Temperature Dependence ◽  
Incident Angle ◽  
Wire Grid ◽  
Wire Grid Polarizer

FABRICATION AND CHARACTERIZATION OF BROADBAND TERAHERTZ WIRE-GRID POLARIZER

2010 ◽  
Vol 19 (04) ◽  
pp. 827-833 ◽  
Author(s):  
Z. C. CHEN ◽  
M. H. HONG ◽  
T. C. CHONG
Keyword(s):  
Time Domain ◽  
Quartz Substrate ◽  
Terahertz Wave ◽  
Mean Value ◽  
Frequency Range ◽  
Terahertz Time Domain Spectroscopy ◽  
Free Standing ◽  
Wire Grid ◽  
The Wire ◽  
Wire Grid Polarizer

A wire-grid terahertz polarizer fabricated on quartz substrate working in broadband is demonstrated. The transmission spectra of the fabricated wire-grid polarizer are characterized by terahertz time domain spectroscopy, showing the good performance of this polarizer in the terahertz frequency range up to 3.5 THz. The transmission of the peak in the time domain is 80% when the incident terahertz wave polarization is perpendicular to the wire-grid. The transmission of the peak is lower than 10% when the incident polarization is parallel to the wire-grid. The polarization factor ranges from 0.92–0.99 with the mean value of 0.97 in the frequency range from 0.1 to 3.5 THz, which is better than that of the free-standing wire-grid polarizer.

The Wire Grid Polarizer Made by Electro- and Electroless- Deposition Processes

2013 ◽  
Vol 50 (32) ◽  
pp. 19-26
Author(s):  
N. Okamoto ◽  
Y. Ikeda ◽  
Y. Koyama ◽  
Y. Kawazu ◽  
T. Saito ◽  
...  
Keyword(s):  
Electroless Deposition ◽  
Wire Grid ◽  
The Wire ◽  
Deposition Processes ◽  
Wire Grid Polarizer

Characteristic of Free Stand Wire-Grid Polarizers in Sub-Millimeter Wave Range

2013 ◽  
Vol 290 ◽  
pp. 127-132
Author(s):  
Hai Rui Liu ◽  
Jun Sheng Yu ◽  
Xiao Ming Liu
Keyword(s):  
Millimeter Wave ◽  
Incident Angle ◽  
Extinction Ratio ◽  
Test Results ◽  
Low Loss ◽  
Wire Grid ◽  
Beam Splitters ◽  
Millimeter Wave Range ◽  
Wave Range ◽  
The Wire

Free stand wire-grids (FSWG) are widely used as polarizers, beam splitters, attenuators, and interferometers in millimeter wave and THz ranges. FSWG behaves as low-loss element as the wire grid is unsupported with a substrate, and provides good performance in the range of 0.1-3.0 THz. This paper analyzes the characteristic of the wire-grid polarizers in sub millimeter wave range. These analysis include the spectral transmittance with different wire spacing and incident angle. In order to evaluate the analysis, we measured the transmittance of wire-grid polarizer by using a novel quasi-optical system. Test results of transmittance show that the extinction ratio is over 15 dB up to 700GHz, which agrees well with predictions.

Polarized microbeam FT-IR analysis of single fibers

1996 ◽  
Vol 54 ◽  
pp. 206-207
Author(s):  
Liling Cho ◽  
David L. Wetzel
Keyword(s):  
Molecular Orientation ◽  
Transition Point ◽  
Polymer Fibers ◽  
Single Fiber ◽  
Wire Grid ◽  
Polyester Fibers ◽  
Ft Ir ◽  
Ir Analysis ◽  
The Relationship ◽  
Wire Grid Polarizer

Polarized infrared microscopy has been used for forensic purposes to differentiate among polymer fibers. Dichroism can be used to compare and discriminate between different polyester fibers, including those composed of polyethylene terephthalate that are frequently encountered during criminal casework. In the fiber manufacturering process, fibers are drawn to develop molecular orientation and crystallinity. Macromolecular chains are oriented with respect to the long axis of the fiber. It is desirable to determine the relationship between the molecular orientation and stretching properties. This is particularly useful on a single fiber basis. Polarized spectroscopic differences observed from a single fiber are proposed to reveal the extent of molecular orientation within that single fiber. In the work presented, we compared the dichroic ratio between unstretched and stretched polyester fibers, and the transition point between the two forms of the same fiber. These techniques were applied to different polyester fibers. A fiber stretching device was fabricated for use on the instrument (IRμs, Spectra-Tech) stage. Tension was applied with a micrometer screw until a “neck” was produced in the stretched fiber. Spectra were obtained from an area of 24×48 μm. A wire-grid polarizer was used between the source and the sample.

A finite element model of terahertz substrate-based wire-grid polarizer

2021 ◽  
Vol 188 ◽  
pp. 404-414
Author(s):  
Nazariy Jaworski ◽  
Nazariy Andrushchak ◽  
Mykhailo Lobur ◽  
Marek Iwaniec
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Element Model ◽  
Wire Grid ◽  
Wire Grid Polarizer

Novel wire grid polarizer for accurate antenna characterization

2012 ◽  
Author(s):  
Hongkyu Park ◽  
Huang Zhe ◽  
Edward PJ Parrott ◽  
Andy Chan ◽  
Emma Pickwell-MacPherson
Keyword(s):  
Wire Grid ◽  
Wire Grid Polarizer
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