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Your search keyword '"Wang, Yiping"' showing total 23 results
Start Over Author "Wang, Yiping" Journal ieee photonics technology letters
23 results on '"Wang, Yiping"'

2. Fully Distributed Strain Sensor Based on a Dual-Loop Optoelectronic Oscillator

Author

Gao, Lingge, Wang, Yiping, Shi, Jingzhan, Liu, Qiang, and Lin, Dongdong

Abstract

A high spatial resolution fully distributed linearly chirped fiber Bragg grating (LCFBG) sensing method based on a dual-loop optoelectronic oscillator (OEO) is proposed. Compared with the traditional distributed grating interrogation system, this work achieves fully distributed strain sensing based on the sensing principle of OEO and the wavelength-position one-to-one mapping mechanism in LCFBG. The interrogation method is simple and fast by processing the sensing information in the RF domain. With the help of the dual-loop OEO, the frequency fluctuation of the signal is only 1.8% of that of the single-loop OEO, which enhances the stability of the system and thus improves the measurement accuracy. To verify the feasibility of the proposed method, a non-uniform distributed strain sensing experiment was performed. The results show that a high spatial resolution of 0.29 mm and a sensing resolution of $0.6~\mu \varepsilon $ were achieved over a length of 53 mm. The system provides a feasible solution for structural health monitoring (SHM).

Published
2024
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7. Temperature-Insensitive and Sensitivity-Enhanced FBG Strain Sensor by Using Parallel MPF

Author

Xiao, Yunhao, Wang, Yiping, Shi, Jingzhan, Zhu, Dan, and Liu, Qiang

Abstract

A temperature-insensitive and sensitivity-enhanced FBG strain sensor with the Vernier effect is proposed and demonstrated. The FBG sensor consists of two FBGs with different Bragg wavelengths as the sensing heads and two parallel-installed fiber ring resonator (FRR)-based microwave photonic filters (MPF) as the interrogation devices. The measurements can be read from the frequency shift in the notch of the envelope signal. Thanks to the Vernier effect produced by the parallel-FRR-based MPF, the sensitivity of the proposed sensor to strain is improved about 23 times compared with the single FRR-based strain sensor, which is experimentally demonstrated to be −33.862 kHz/ $\mu \varepsilon $ . And the sensitivity of the sensor to temperature was drastically decreased from 325.583 kHz/°C to 1.031 kHz/°C. The unique merits of the proposed sensor, such as high sensitivity, high resolution, and stability against random disturbances, give the sensor great potential for sensing applications in complex environments.

Published
2023
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11. A Microwave Photonic-Assisted Fiber Loop Ring Down System with Multi-Sensing Function.

Author

Wu, Xiaoyan, Wang, Yiping, Shi, Jingzhan, and Zhu, Dan

Abstract

In this letter, we demonstrate a fiber-loop ring down (FLRD) multi-function sensing system, which is assisted by microwave photonic technique. The temperature and curvature sensing characteristics of the FLRD system are studied. The ring-down curve in the time domain can be acquired by taking the inverse Fourier transform (IFFT) of the frequency response of a microwave photonics filter (MPF). The temperature and curvature information can then be evaluated simultaneously based on the calculated ring-down curves. Compared with the traditional time domain measurement, the system is based on pure frequency domain measurement from a microwave photonic configuration, which reduces the requirements of the light source and has the features of fast responding and easy networking. The sensitivity of the system is measured to be $0.425~\mu \text{s}/^{\circ }\text{C}$ in the sensing range of 30~70 °C and $0.1553~\mu \text{s}$ /cm−1 in the sensing range of 0.8696~1.0526 cm−1. The experimental results agree well with the theoretical predictions. [ABSTRACT FROM AUTHOR]

Published
2022
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22. Thermo-Optic Switching Effect Based on Fluid-Filled Photonic Crystal Fiber

Author

Wang, Yiping, primary, Bartelt, Hartmut, additional, Ecke, Wolfgang, additional, Moerl, Klaus, additional, Lehmann, Hartmut, additional, Schroeder, Kerstin, additional, Willsch, Reinhardt, additional, Kobelke, Jens, additional, Rothhardt, Manfred, additional, Spittel, Ron, additional, Shan, Liye, additional, Brueckner, Sven, additional, Jin, Wei, additional, Tan, Xiaoling, additional, and Jin, Long, additional

Published
2010
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