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Research on multi-parameter characteristics of a PCF sensor modified by GO composite films

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Abstract

We propose a photonic crystal fiber (PCF) sensor based on graphene oxide (GO) composite film modification to simultaneously measure the multi-parameter sensing characteristics of humidity, temperature, and glucose concentration. The GO-polyvinyl alcohol (PVA) composite film is used to measure the humidity-sensing characteristics of the sensor, and the glucose oxidase composite film is used to measure the sensing characteristics of the glucose concentration, respectively. Experiment results show that the sensitivities of the temperature of the GO-PVA coating structure are 0.037 nm/°C, 0.047 nm/°C, and 0.031 nm/°C; the sensitivities of humidity are 0.059 nm/%RH, 0.121 nm/%RH, and 0.047 nm/%RH; and the sensitivities of the glucose concentration of the GO-GOD coating structure are 0.028 nm/(g/L), 0.049 nm/(g/L), and 0.010 nm/(g/L) for three interference dips, respectively. The structure is simple to manufacture and can be used as a sensor for detecting multiple parameters. It can be widely used in biomedicine, environmental monitoring, and other fields.

© 2020 Optical Society of America

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