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91 results on '"Fu, Ming-Yue"'

7. Optical characteristics of bending multimode superstructure fiber gratings

Author

Fu, Ming-Yue, Liu, Wen-Fung, Sheng, Hao-Jan, Ai, Lung, Peng, Hsin-Wen, and Tien, Chuen-Lin

Subjects
Diffraction gratings -- Observations, Fiber optics -- Research, Fiber optics, Astronomy, Physics
Abstract

The dispersion characteristics of superstructure fiber gratings written in multimode fibers and side-polished multimode fibers are investigated at different bending curvatures. The experimental results show that the group time delay in multimode superstructure fiber gratings can be tuned more easily than that of superstructure gratings in single-mode fiber. This method can provide tunable dispersion of superstructure fiber gratings by controlling the bending curvatures for application in dispersion compensators, fiber sensors, or suitable optical filters of optical communication systems. of America OCIS codes: 060.2310, 060.2370.

Published
2009

15. Fiber anemometer for simultaneously measuring wind speed and wind direction.

Author

Cheng, Jui‐Nan, Chang, Hung‐Ying, Fu, Ming‐Yue, and Liu, Wen‐Fung

Subjects
ANEMOMETER, FIBER Bragg gratings, WIND speed, STAINLESS steel, METALLIC surfaces
Abstract

In this paper, we proposed a novel anemometer for simultaneously and conveniently monitoring wind speed and wind direction by using a pair of fiber Bragg gratings (FBGs). The anemometer comprises a plastic ball, a stainless steel rod, and two FBGs. The gratings are glued to the surface of the stainless steel rod with a location separation of 90°. In the operation mechanism, the bend in the stainless‐steel‐rod caused by the wind force drives the FBGs, thereby leading to a grating wavelength shift for the measurement both of wind speed and wind direction This fiber anemometer is experimentally demonstrated in real time with a sensitivity of 0.02 nm/(m/s) and a resolution of 0.49 m/s for wind speed measurement, with a wind speed error of less than 2.38%, and a wind direction angle error of approximately 0.69%. [ABSTRACT FROM AUTHOR]

Published
2019
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16. Asynchronous sampling for Q-factor estimation using sampling pulse with wide pulsewidth

Author

Chao Lu, Yixin Wang, Fu Ming Yue, Yi Dong, Tee Hiang Cheng, and Zhihong Li

Subjects
Computer simulation, Control theory, Computer science, Q factor, Sampling (statistics), Electrical and Electronic Engineering, Optical performance monitoring, Signal, Sample (graphics), Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, Pulse (physics), Communication channel
Abstract

A novel method based on asynchronous sampling using sampling pulse with wide pulsewidth has been suggested for Q-factor estimation from amplitude histogram. The effectiveness of this method has been demonstrated through numerical simulation. It was found that, there exist a linear relationship between original Q value and the estimated Q factor using sample pulse with certain pulsewidth for both nonreturn-to-zero and return-to-zero signal format. This method is simple and easy to implement. It can be applied to either single channel or multi channel monitoring scheme.

Published
2003
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