Litong Li, Dongsheng Zhang, Xiaoyan Wen, Sisi Peng, "FFPI-FBG hybrid sensor to measure the thermal expansion and thermo-optical coefficient of a silica-based fiber at cryogenic temperatures," Chin. Opt. Lett. 13, 100601 (2015)
- Chinese Optics Letters
- Vol. 13, Issue 10, 100601 (2015)
Fig. 1. Schematic structure of the FFPI-FBG hybrid sensor.
Fig. 2. Digital microscope image of the hybrid sensor.
Fig. 3. Reflective spectrum of the hybrid sensor.
Fig. 4. (a) Configuration and (b) actual packaging of the hybrid sensor.
Fig. 5. Room temperature performance of the FFPI-FBG hybrid sensor.
Fig. 6. Cryogenic experimental setup.
Fig. 7. (a) Bragg wavelength and (b) FFPI cavity length versus the temperature at cryogenic temperatures.
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Table 1. Comparisons of the Measured Data and the Published Data
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