Refractive index & physical thickness distributions measurement and consideration of dependence of measurement accuracy on scanning interval using low-coherence digital holography

2013 ◽  
Author(s):  
Kaho Watanabe ◽  
Takanori Nomura
Keyword(s):  
Refractive Index ◽  
Digital Holography ◽  
Measurement Accuracy ◽  
Low Coherence ◽  
Physical Thickness

Optic Method to Measure the Density of Gas and the Analysis on Uncertainty of Measurement

2011 ◽  
Vol 361-363 ◽  
pp. 226-231
Author(s):  
Chang Li Guo ◽  
Yan Qing Zhang
Keyword(s):  
Refractive Index ◽  
Measurement Accuracy ◽  
Uncertainty Of Measurement ◽  
Interference Theory ◽  
Interference Fringes ◽  
Air Chamber ◽  
High Measurement ◽  
Wedge Structure ◽  
High Measurement Accuracy ◽  
Optical Wedge

A optic method to measure the density of gas is put forward. That is, by using the optical Wedge structure to build air chamber and chamber for gas under test, and by measuring the differences of the optical Wedge interference fringes of the two rooms, the density of gas has been measured. The interference theory of Wedge has been theoretical analyzed, and a formula which can be used to measure the refractive index of gas is put forward, and the uncertainty of the measurement has been analyzed. The parameters of gas density, refractive index and gas thickness have been used in the formula. The results show that the method of optical Wedge interference is practical, and high measurement accuracy is achievement when the density of gas is high.

Low Coherence Off-axis Digital Holography Based on Scanning the Optical Path Difference

2014 ◽  
Vol 43 (10) ◽  
pp. 1011001
Author(s):  
邓丽军 DENG Li-jun ◽  
杨勇 YANG Yong ◽  
石炳川 SHI Bing-chuan ◽  
马忠洪 MA Zhong-hong ◽  
盖琦 GE Qi ◽  
...  
Keyword(s):  
Digital Holography ◽  
Optical Path Difference ◽  
Path Difference ◽  
Optical Path ◽  
Low Coherence

Spatiospectral digital holography of microobjects in low-coherence light

2013 ◽  
Vol 58 (12) ◽  
pp. 1200-1204 ◽  
Author(s):  
S. G. Kalenkov ◽  
G. S. Kalenkov ◽  
A. E. Shtan’ko
Keyword(s):  
Digital Holography ◽  
Low Coherence

Simultaneous Measurement of Refractive Index and Thickness of Transparent Plates by Low Coherence Interferometry

1997 ◽  
Vol 4 (4) ◽  
pp. 507-515 ◽  
Author(s):  
Masato Ohmi ◽  
Takehisa Shiraishi ◽  
Hideyuki Tajiri ◽  
Masamitsu Haruna
Keyword(s):  
Refractive Index ◽  
Simultaneous Measurement ◽  
Low Coherence ◽  
Low Coherence Interferometry

Influence of refractive index measurement accuracy on single-mode optical fiber modeling

1992 ◽  
Vol 4 (11) ◽  
pp. 1282-1284 ◽  
Author(s):  
E. Jaunart ◽  
P. Megret ◽  
J.C. Froidure ◽  
P. Crahay ◽  
M. Blondel ◽  
...  
Keyword(s):  
Refractive Index ◽  
Optical Fiber ◽  
Measurement Accuracy ◽  
Single Mode ◽  
Refractive Index Measurement ◽  
Single Mode Optical Fiber ◽  
Index Measurement
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