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Your search keyword '"Wang, Tingyun"' showing total 15 results
Start Over Author "Wang, Tingyun" Journal optical fiber technology
15 results on '"Wang, Tingyun"'

14. Modal content analysis of optical fiber based on cross-correlated and off-axis digital holography

Author

Yan Cheng, Yin Wei-Hao, Huang Su-Juan, and Wang Tingyun

Subjects
Materials science, Optical fiber, genetic structures, Phase (waves), Physics::Optics, 02 engineering and technology, 01 natural sciences, law.invention, 010309 optics, 020210 optoelectronics & photonics, Optics, law, 0103 physical sciences, 0202 electrical engineering, electronic engineering, information engineering, Fiber, Electrical and Electronic Engineering, Instrumentation, Group delay and phase delay, Multi-mode optical fiber, business.industry, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, Modal, Control and Systems Engineering, Temporal resolution, business, Digital holography
Abstract

A fiber mode analysis method based on cross-correlation in the time domain and off-axis digital holography is presented to measure different modal contents of multimode optical fiber. A measurement system with self-developed software and hardware is established, which can measure the group-delay difference, mode energy weights, mode intensity and phase distribution of fiber under test. The group-delay temporal resolution of system reaches up to 0.27 ps at a wavelength of 850 nm and a fiber length of 2.4 m. A few-mode fiber is measured at different wavelengths and bending diameters. The modal content varies at different wavelengths, and the energy proportion varies at different bending diameters.

Published
2021

15. Characterization of Nb/Al codoped silica fiber by writing long-period gratings with CO2 laser.

Author

Chen, Na, Wang, Litao, Yan, Faming, Chen, Zhenyi, Liu, Yunqi, and Wang, Tingyun

Subjects
*NIOBIUM compounds, *ALUMINUM compounds, *SILICA fibers, *FIBER gratings, *CARBON dioxide lasers, *THERMO-optical devices
Abstract

Highlights: [•] We fabricated Nb/Al codoped silica fiber with ALD and MCVD. [•] We fabricated long-period grating (LPG) in this fiber with CO2 laser pulse. [•] We studied the temperature and strain characteristics of this Nb/Al-LPG. [•] Acquired thermooptic coefficient of the of Nb/Al fiber core is 7.99×10−6/°C. [•] Acquired elastooptic coefficient of the of Nb/Al fiber core is −0.222. [ABSTRACT FROM AUTHOR]

Published
2013
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