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Academic Journal of Engineering and Technology Science, 2020, 3(3); doi: 10.25236/AJETS.2020.030304.

Optical Fiber Humidity Sensor Based on Graphene Oxide


Huo Shihang1, a, Tao Yuan2, b

Corresponding Author:
Huo Shihang

1 harbin University of Science and Technology, Harbin 150080, China
2 Harbin University of Science and Technology, Harbin 150080, China
a [email protected], b [email protected]


Based on the hydrophilic and humidity-sensitive characteristics of graphene oxide, the project combines it with optical fiber to study the real-time on-line humidity monitoring technology of optical fiber-graphene oxide. The sensor uses side polished optical fiber (SPF) as a substrate and graphene obtained by an improved oxidation-reduction method as a sensitive material. rGO is deposited in the polishing zone of SPF by natural evaporation deposition method, so that rGO interacts with optical field of optical fiber. Theoretical analysis of the sensing mechanism can explain the experimental results and show that the graphene-based optical fiber sensor can also be widely applied to the detection of other kinds of chemical gases. The experimental results show that the sensor has a linear response with sensitivity as high as 0.165 dB/%RH in the measurement range of 35% ~ 65% RH, so it has the advantages of high sensitivity and simple structure.


Graphene oxide, Optical fiber optics, Optical fiber humidity sensor, Side polished fiber

Cite This Paper

Huo Shihang, Tao Yuan. Optical Fiber Humidity Sensor Based on Graphene Oxide. Academic Journal of Engineering and Technology Science (2020) Vol. 3 Issue 3: 19-27. https://doi.org/10.25236/AJETS.2020.030304.


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