Biofuncationalized microfiber Bragg grating for acid-based sensing

Yang Ran; Yunyun Huang; Xiang Shen; Dandan Sun; Xiuxin Wang; Long Jin; Jie Li; Baiou Guan

doi:10.1117/12.2058295

2 June 2014 Biofuncationalized microfiber Bragg grating for acid-based sensing

Yang Ran, Yunyun Huang, Xiang Shen, Dandan Sun, Xiuxin Wang, Long Jin, Jie Li, Baiou Guan

Proceedings Volume 9157, 23rd International Conference on Optical Fibre Sensors; 915742 (2014) https://doi.org/10.1117/12.2058295
Event: OFS2014 23rd International Conference on Optical Fiber Sensors, 2014, Santander, Spain

Abstract

We demonstrate an acid-based sensor from the biofuncationalized microfiber Bragg grating. By electrostatic selfassembly layer-by-layer technique, the film consisting of sodium alginate which has hygroscopic response to the potential of hydrogen is coated on the fiber surface. Consequently, the refractive index variation of the sensing film caused by water absorption can be measured by mFBG’s higher order mode peak which can be translated into pH value information. The sensitivity of the sensor is received as high as 265pm/pH.

Citation Download Citation

Yang Ran, Yunyun Huang, Xiang Shen, Dandan Sun, Xiuxin Wang, Long Jin, Jie Li, and Baiou Guan "Biofuncationalized microfiber Bragg grating for acid-based sensing", Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 915742 (2 June 2014); https://doi.org/10.1117/12.2058295

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