Zhao Yang
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Zhao Yang has a total of 9 co-authors. Here are the top co-authors by number of shared publications:
- Guomeng Zuo
School of Optical and Electronic Information, Huazhong University of Science and Technology, 12443 Wuhan, Hubei China
2 shared publications - Li Xia
Huazhong University of Science and Technology
2 shared publications - Ruiling Qi
School of Optical and Electronic Information, Huazhong University of Science and Technology, 12443 Wuhan, Hubei China
2 shared publications - Jing Chen
School of Optical and Electronic Information, Huazhong University of Science and Technology, Huazhong University of Science and Technology School of Optical and Electronic Information, 529011 Wuhan, Hubei China
1 shared publication - Shiyu Li
School of Integrated Circuit Science and Engineering and Jiangsu Province Engineering Research Center of Photonic Devices and System Integration for Communication Sensing Convergence, Wuxi University, Wuxi, China
1 shared publication - Shiyu Li
School of Optical and Electronic Information, Huazhong University of Science and Technology, 12443 Wuhan, Hubei China
1 shared publication
Latest Publications
- 1 December 2020
- Published by Institute of Electrical and Electronics Engineers (IEEE) in Journal of Lightwave Technology
- Vol. 39 (6) , 1880-1886
The Order Calibration of Vernier Squared Envelope Extracted by the Hilbert-Huang Transform
The Vernier effect can amplify the sensitivity of the sensor, but its effective spectral range is usually limited to one free spectral range (FSR). Once the envelope shifts beyond one FSR, it will lead to the misidentification of the wavelengths with different orders. In this paper, we present a method for calibrating the order of Vernier spectral envelope based on least square algorithm to solve this problem. Theoretically, the squared envelope extracted by Hilbert transformation is a cosine-shaped function. And the interval between the adjacent minima of the curve calculated by the least square method is equal to the harmonic central wavelength ${\lambda_{0}}$ . It is deduced that the shifted position of a peak can be tracked by the order change of ${\lambda_{0}}$ . The calculation result is further verified by both simulation and experiment. The result shows that the effective measurement range is expanded by 4.6 times. Therefore, the proposed method can expand the effective measurement range of the sensor based on Vernier effect under the condition of the same sensitivity.- 1 December 2020
- Published by Institute of Electrical and Electronics Engineers (IEEE) in Journal of Lightwave Technology
- Vol. 39 (6) , 1880-1886
The Order Calibration of Vernier Squared Envelope Extracted by the Hilbert-Huang Transform
The Vernier effect can amplify the sensitivity of the sensor, but its effective spectral range is usually limited to one free spectral range (FSR). Once the envelope shifts beyond one FSR, it will lead to the misidentification of the wavelengths with different orders. In this paper, we present a method for calibrating the order of Vernier spectral envelope based on least square algorithm to solve this problem. Theoretically, the squared envelope extracted by Hilbert transformation is a cosine-shaped function. And the interval between the adjacent minima of the curve calculated by the least square method is equal to the harmonic central wavelength ${\lambda_{0}}$ . It is deduced that the shifted position of a peak can be tracked by the order change of ${\lambda_{0}}$ . The calculation result is further verified by both simulation and experiment. The result shows that the effective measurement range is expanded by 4.6 times. Therefore, the proposed method can expand the effective measurement range of the sensor based on Vernier effect under the condition of the same sensitivity.- 13 October 2020
- Published by Institute of Electrical and Electronics Engineers (IEEE) in Journal of Lightwave Technology
- Vol. 39 (2) , 660-666
Double Phase Matching in MZI With Antiresonant Effect for Optical Fiber Sensor Application
In the traditional Mach-Zehnder interferometer, only one phase matching condition needs to be satisfied for destructive interference. Here, we propose and demonstrate a Mach-Zehnder interferometer with double phase matching condition, which satisfies both the destructive condition of double beam interference and the resonant condition of anti-resonant effect. Different from the traditional method, the interference is construed as a coherent superposition between anti-resonant beam and cladding one. The effect of the multimode fiber length on the energy distribution and transmission spectrum is analyzed precisely. The experimental results show that the intensity of the wavelength meeting double phase matching condition is extremely sensitive to both strain and temperature. The maximum intensity sensitivity to strain and temperature are up to 16.1 dB/m and 0.181 dB/, respectively. Compared with the previous work, the sensitivities have been improved several times or even tens of times. The proposed Mach-Zehnder interferometer with double phase matching condition can improve the dip depth, which has a great potential value in sensing application.
- 13 October 2020
- Published by Institute of Electrical and Electronics Engineers (IEEE) in Journal of Lightwave Technology
- Vol. 39 (2) , 660-666
Double Phase Matching in MZI With Antiresonant Effect for Optical Fiber Sensor Application
In the traditional Mach-Zehnder interferometer, only one phase matching condition needs to be satisfied for destructive interference. Here, we propose and demonstrate a Mach-Zehnder interferometer with double phase matching condition, which satisfies both the destructive condition of double beam interference and the resonant condition of anti-resonant effect. Different from the traditional method, the interference is construed as a coherent superposition between anti-resonant beam and cladding one. The effect of the multimode fiber length on the energy distribution and transmission spectrum is analyzed precisely. The experimental results show that the intensity of the wavelength meeting double phase matching condition is extremely sensitive to both strain and temperature. The maximum intensity sensitivity to strain and temperature are up to 16.1 dB/m and 0.181 dB/, respectively. Compared with the previous work, the sensitivities have been improved several times or even tens of times. The proposed Mach-Zehnder interferometer with double phase matching condition can improve the dip depth, which has a great potential value in sensing application.