Quantum metrology for high-accuracy measurement of refractive index difference in original optical fibers

2018 ◽  
Author(s):  
F. Mazeas ◽  
R. Dauliat ◽  
D. Aktas ◽  
M. Reisner ◽  
P. Vergyris ◽  
...  
Keyword(s):  
Refractive Index ◽  
Optical Fibers ◽  
High Accuracy ◽  
Quantum Metrology ◽  
Accuracy Measurement ◽  
Refractive Index Difference ◽  
High Accuracy Measurement

Research on Liquid Concentration Real-Time Detecting System Based on F-P Interferometer

2006 ◽  
Vol 326-328 ◽  
pp. 143-146
Author(s):  
Wen Li Wei ◽  
Xiu Fang Yang
Keyword(s):  
Refractive Index ◽  
Optical Fiber ◽  
Tracking System ◽  
High Accuracy ◽  
Light Wavelength ◽  
Accuracy Measurement ◽  
Liquid Concentration ◽  
Dynamic Tracking ◽  
Transparent Liquid ◽  
High Accuracy Measurement

A kind of dynamic tracking system for conducting high accuracy measurement of transparent liquid concentration is designed by means of line matrix CCD receiving fringes in accordance with the relations between liquid concentration and refractive index as well as the relations among refractive index, interference light wavelength of optical fiber F-P interferometer and grade orders. The detecting system can recognize or detect 0.01% of concentration variations via measuring a group of alcohol.

scholarly journals High-accuracy measurement system for the refractive index of air based on a simple double-beam interferometry

2021 ◽  
Vol 29 (2) ◽  
pp. 1396
Author(s):  
Hongtang Gao ◽  
Zhongyu Wang ◽  
Wei Zou ◽  
Yuzhang Liu ◽  
Shuanghua Sun
Keyword(s):  
Refractive Index ◽  
Measurement System ◽  
High Accuracy ◽  
Accuracy Measurement ◽  
Double Beam ◽  
High Accuracy Measurement

High accuracy measurement of the ground-state hyperfine splitting in a 113Cd+ microwave clock: erratum

2021 ◽  
Vol 46 (20) ◽  
pp. 5207
Author(s):  
K. Miao ◽  
J. W. Zhang ◽  
X. L. Sun ◽  
S. G. Wang ◽  
A. M. Zhang ◽  
...  
Keyword(s):  
Ground State ◽  
Hyperfine Splitting ◽  
High Accuracy ◽  
Accuracy Measurement ◽  
High Accuracy Measurement

scholarly journals High Accuracy Measurement of Total Losses in Fractional Horsepower Induction Motors

2015 ◽  
Vol 1 (2) ◽  
pp. 13
Author(s):  
Azzeddine Ferrah ◽  
Mounir Bouzguenda ◽  
Jehad M. Al-Khalaf Bani Younis
Keyword(s):  
Single Phase ◽  
Induction Motors ◽  
Data Acquisition System ◽  
High Accuracy ◽  
Industrial Applications ◽  
Motor Speed ◽  
Accuracy Measurement ◽  
Three Phase ◽  
Better Than ◽  
High Accuracy Measurement

Large and small single-phase and three-phase induction motors are commonly used in industrial applications. The present work represents an attempt towards the design of a high accuracy system for the measurement of fractional horsepower (FHP) induction motor losses and efficiency. The calorimeter designed and built is capable of measuring heat losses of up to 1 kW with an overall accuracy better than 3%. During all tests, ambient temperature, humidity, motor speed and motor frame temperature were recorded using precise digital instruments. The inlet, outlet temperatures and resulting losses were recorded automatically using a high accuracy 12-bit data acquisition system. The preliminary results obtained demonstrate the suitability of the designed calorimeter for the accurate measurement of losses in FHP induction motors.

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