Miniature high sensitive pH sensor based on micro optical fiber interferometer

A biocompatible pH sensor based on a Mach-Zehnder is proposed with the structure of SMF-TCF-SMF with a taper on the TCF portion. The sensor is then coated with PVA/PAA hydrogel which swells reversibly in response to changes to pH, which leads to a change of refractive index which translate to shifti...

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書目詳細資料
主要作者: Oon, Roy Guo Hao
其他作者: Chan Chi Chiu
格式: Final Year Project
語言:English
出版: 2017
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在線閱讀:http://hdl.handle.net/10356/72082
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總結:A biocompatible pH sensor based on a Mach-Zehnder is proposed with the structure of SMF-TCF-SMF with a taper on the TCF portion. The sensor is then coated with PVA/PAA hydrogel which swells reversibly in response to changes to pH, which leads to a change of refractive index which translate to shifting interference dips in the optical spectrum analyzer. The proposed sensor has limited success with a sensitivity of 0.73449 and R2= 0.8947. The range of sensitivity was between pH 2 to 4.2.