scholarly journals Position-deviation-compensation demodulation method for multi-channel polarized low-coherence interferometry

2018 ◽  
Vol 26 (13) ◽  
pp. 17407 ◽  
Author(s):  
Shuang Wang ◽  
Jinshi Zhang ◽  
Junfeng Jiang ◽  
Kun Liu ◽  
Xue Wang ◽  
...  
Keyword(s):  
Low Coherence ◽  
Low Coherence Interferometry ◽  
Demodulation Method

A Simple and Effective Demodulation Method for Polarized Low-Coherence Interferometry

2012 ◽  
Vol 24 (16) ◽  
pp. 1390-1392 ◽  
Author(s):  
Shaohua Wang ◽  
Junfeng Jiang ◽  
Tiegen Liu ◽  
Kun Liu ◽  
Jinde Yin ◽  
...  
Keyword(s):  
Low Coherence ◽  
Low Coherence Interferometry ◽  
Demodulation Method

scholarly journals Demodulation Method of F-P Sensor Based on Wavelet Transform and Polarization Low Coherence Interferometry

Sensors ◽  
2020 ◽  
Vol 20 (15) ◽  
pp. 4249
Author(s):  
Jiwen Cui ◽  
Yizhao Niu ◽  
Hong Dang ◽  
Kunpeng Feng ◽  
Xun Sun ◽  
...  
Keyword(s):  
Cavity Length ◽  
Sampling Interval ◽  
Low Coherence ◽  
Low Coherence Interferometry ◽  
Data Processing Method ◽  
Fabry Perot ◽  
Complex Morlet Wavelet ◽  
Influence Of Noise ◽  
Demodulation Method ◽  
Better Than

Polarized low-coherence interferometry (PLCI) is widely used for the demodulation of Fabry–Perot (F-P) sensors. To avoid the influence of noise and dispersion on interference fringes, this paper proposes a data processing method in which the wavelet tools are applied to extract useful information from the extremum locations and envelope center of the fringes. Firstly, the wavelet threshold denoising (WTD) algorithm is used to remove electrical noise, and the complex Morlet wavelet is used to extract the fringe envelope. Based on this, the envelope center is used to predict the extremum locations of the specified order in its adjacent interval, the predicted locations are used as references to track the exact extremum locations, and the middle location of the peak and valley values is obtained to demodulate the F-P cavity accurately. The validity of this demodulation theory is verified by an air F-P cavity whose cavity length varies from 17 to 20 μm. With a sampling interval of 30 nm, the experimental results indicate that the repeatability accuracy is higher than 6.04 nm, and the resolution is better than 4.0 nm.

Zero-fringe demodulation method based on location-dependent birefringence dispersion in polarized low-coherence interferometry

2014 ◽  
Vol 39 (7) ◽  
pp. 1827 ◽  
Author(s):  
Shuang Wang ◽  
Tiegen Liu ◽  
Junfeng Jiang ◽  
Kun Liu ◽  
Jinde Yin ◽  
...  
Keyword(s):  
Low Coherence ◽  
Low Coherence Interferometry ◽  
Demodulation Method

scholarly journals A Demodulation Method of Spatial Domain for Low-Coherence Interferometry With High Accuracy and Adaptability

2020 ◽  
Vol 12 (2) ◽  
pp. 1-11
Author(s):  
Chao Wang ◽  
Xuezhi Zhang ◽  
Junfeng Jiang ◽  
Kun Liu ◽  
Shuang Wang ◽  
...  
Keyword(s):  
High Accuracy ◽  
Spatial Domain ◽  
Low Coherence ◽  
Low Coherence Interferometry ◽  
Demodulation Method

Fringe-Distortion-Correction for Polarized Low-Coherence Interferometry With Phosphor-Based LED

2019 ◽  
Vol 37 (14) ◽  
pp. 3557-3562
Author(s):  
Rundong Wang ◽  
Shuang Wang ◽  
Junfeng Jiang ◽  
Kun Liu ◽  
Xue Wang ◽  
...  
Keyword(s):  
Distortion Correction ◽  
Low Coherence ◽  
Low Coherence Interferometry

Light source for low-coherence interferometry surface diagnostics

2011 ◽  
Author(s):  
Zdeněk Buchta ◽  
Bretislav Mikel ◽  
Simon Rerucha ◽  
Josef Lazar ◽  
Ondrej Cip
Keyword(s):  
Light Source ◽  
Low Coherence ◽  
Low Coherence Interferometry ◽  
Surface Diagnostics

scholarly journals Cellular Organization and Substructure Measured Using Angle-Resolved Low-Coherence Interferometry

2002 ◽  
Vol 82 (4) ◽  
pp. 2256-2264 ◽  
Author(s):  
Adam Wax ◽  
Changhuei Yang ◽  
Vadim Backman ◽  
Kamran Badizadegan ◽  
Charles W. Boone ◽  
...  
Keyword(s):  
Cellular Organization ◽  
Low Coherence ◽  
Low Coherence Interferometry
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