Kaijun LIU, Binbin LUO, Xue ZOU, Decao WU, Shenghui SHI, Shanghai JIANG, Ou DENG, Xianglong ZOU, Taojiang WU, Mingfu ZHAO. Sensitivity-enhanced Vibration Sensor Based on Thin-cladding Excessively Tilted Fiber Gratings[J]. Acta Photonica Sinica, 2021, 50(2): 57
- Acta Photonica Sinica
- Vol. 50, Issue 2, 57 (2021)
Fig. 1. Schematic diagram and polarization dependence spectra of ExTFG
Fig. 2. The simulation results of waveguide dispersion factorγ ![]()
![]()
Γ s t r a i n ![]()
![]()
d λ / d ε ![]()
![]()
Fig. 3. Spectral changes after etching in HF solution with volume fraction of 20%
Fig. 4. Low-frequency vibration sensing experimental system diagram based on cantilever beam
Fig. 5. Amplitude-frequency response characteristics in the vibration frequency range of 40~200 Hz (the inset is a partial enlargement of the vibration frequency close to 72 Hz) and time domain response at 72 Hz for the same order mode
Fig. 6. Amplitude-frequency response characteristics in the vibration frequency range of 40~200 Hz (the inset is a partial enlargement of the vibration frequency close to 72 Hz) and time domain response at 72 Hz for different order modes
Fig. 7. The output amplitude response of ExTFG vibration sensor for different cladding diameter at vibration frequency at 72 Hz
|
Table 1. ExTFG with different diameters obtained by HF etching
Set citation alerts for the article
Please enter your email address
© Copyright 2018-2021 | Chinese Laser Press. All Rights Reserved 沪ICP备15018463号-20