scholarly journals Fundamental limit of microresonator field uniformity and slow light enabled ultraprecise displacement metrology

2021 ◽  
Vol 46 (7) ◽  
pp. 1656
Author(s):  
M. Sumetsky
Keyword(s):  
Slow Light ◽  
Fundamental Limit ◽  
Field Uniformity

Analysis of field uniformity and quantitative evaluation of subsurface pitting corrosion in conductors via GPEC

2020 ◽  
Vol 64 (1-4) ◽  
pp. 19-29
Author(s):  
Shuting Ren ◽  
Yong Li ◽  
Bei Yan ◽  
Jinhua Hu ◽  
Ilham Mukriz Zainal Abidin ◽  
...  
Keyword(s):  
Quantitative Evaluation ◽  
Eddy Current ◽  
Pitting Corrosion ◽  
Gradient Field ◽  
Uniform Field ◽  
Eddy Current Method ◽  
Optimal Position ◽  
Pulsed Eddy Current ◽  
Field Uniformity ◽  
Processing Algorithms

Structures of nonmagnetic materials are broadly used in engineering fields such as aerospace, energy, etc. Due to corrosive and hostile environments, they are vulnerable to the Subsurface Pitting Corrosion (SPC) leading to structural failure. Therefore, it is imperative to conduct periodical inspection and comprehensive evaluation of SPC using reliable nondestructive evaluation techniques. Extended from the conventional Pulsed eddy current method (PEC), Gradient-field Pulsed Eddy Current technique (GPEC) has been proposed and found to be advantageous over PEC in terms of enhanced inspection sensitivity and accuracy in evaluation and imaging of subsurface defects in nonmagnetic conductors. In this paper two GPEC probes for uniform field excitation are intensively analyzed and compared. Their capabilities in SPC evaluation and imaging are explored through simulations and experiments. The optimal position for deployment of the magnetic field sensor is determined by scrutinizing the field uniformity and inspection sensitivity to SPC based on finite element simulations. After the optimal probe structure is chosen, quantitative evaluation and imaging of SPC are investigated. Signal/image processing algorithms for SPC evaluation are proposed. Through simulations and experiments, it has been found that the T-shaped probe together with the proposed processing algorithms is advantageous and preferable for profile recognition and depth evaluation of SPC.

Research on Characteristics of Field Uniformity in Reverberation Chamber Using Two TX Antennas

2012 ◽  
Vol E95.B (7) ◽  
pp. 2386-2392
Author(s):  
Jung-Hoon KIM ◽  
Tae-Heon JANG ◽  
Sung-Kuk LIM ◽  
Songjun LEE ◽  
Sung-Il YANG
Keyword(s):  
Reverberation Chamber ◽  
Field Uniformity

The Field Uniformity Analysis in a Triangular Prism Reverberation Chamber with a QRD

2011 ◽  
Vol E94-B (1) ◽  
pp. 334-337 ◽  
Author(s):  
Jung-Hoon KIM ◽  
Hye-Kwang KIM ◽  
Eugene RHEE ◽  
Sung-Il YANG
Keyword(s):  
Triangular Prism ◽  
Reverberation Chamber ◽  
Field Uniformity

Slow-light Enhanced Nonlinear Optics in Silicon Photonic Crystal Waveguides

PIERS Online ◽  
2010 ◽  
Vol 6 (3) ◽  
pp. 273-278 ◽  
Author(s):  
David J. Moss ◽  
B. Corcoran ◽  
C. Monat ◽  
Christian Grillet ◽  
T. P. White ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Nonlinear Optics ◽  
Slow Light ◽  
Photonic Crystal Waveguides ◽  
Silicon Photonic

Broadband Slow Light and Nonlinear Switching Devices

PIERS Online ◽  
2007 ◽  
Vol 3 (3) ◽  
pp. 281-285 ◽  
Author(s):  
Gunnar Boettger ◽  
J.-M. Brosi ◽  
A. Maitra ◽  
J. Wang ◽  
A. Y. Petrov ◽  
...  
Keyword(s):  
Slow Light ◽  
Nonlinear Switching ◽  
Switching Devices

Slow Light in Semi-Conductor Quantum Well Waveguides

2008 ◽  
Author(s):  
Constance Chang-Hasnain ◽  
Hailin Wang ◽  
Shun-Lien Chuang ◽  
Philip Hemmer
Keyword(s):  
Quantum Well ◽  
Slow Light
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