26 October 2016 High-sensitivity optical sensing of temperature based on side-polished fiber with polymer nanoporous cladding
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Abstract
We demonstrated temperature sensing of a side-polished fiber with polymer nanoporous film cladding, which was constructed by dehydrating dichromate gelatin film on the polished surface. Due to intermodal interference of core mode and cladding mode, two main transmission valleys were observed at 1219.2 and 1373.2 nm. The modulation amplitudes are ∼8 and 12 dB, respectively. These two transmission valleys show significant sensitivity to the temperature. At the wavelength of 1373.2 nm, the position of transmission valley blueshifted 114 nm while the temperature changes from 30°C to 90°C, and the sensitivity of temperature was up to 1.92  nm/°C. The linear correlation coefficient was 98.67%. The temperature sensing characteristics of nanoporous cladding fiber was successfully demonstrated, and it shows a high potential in photonics applications.
© 2016 Society of Photo-Optical Instrumentation Engineers (SPIE)
Yongchun Zhong, Shan Li, Li Tang, Zhe Chen, Jianhui Yu, Heyuan Guan, Huihui Lu, Yong Zhang, "High-sensitivity optical sensing of temperature based on side-polished fiber with polymer nanoporous cladding," Optical Engineering 55(10), 106123 (26 October 2016). https://doi.org/10.1117/1.OE.55.10.106123 . Submission:
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