Haidong Shao
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Haidong Shao has a total of 6 co-authors. Here are the top co-authors by number of shared publications:
- Cuiting Sun
College of Science, Northeast Forestry University, Harbin 150001, China
1 shared publication - Jiangyu Qu
College of Science, Northeast Forestry University, Harbin 150001, China
1 shared publication - Jiayi Xuan
College of Science, Northeast Forestry University, Harbin 150001, China
1 shared publication - Ruihong Xiong
College of Science, Northeast Forestry University, Harbin 150001, China
1 shared publication - Ruoning Wang
College of Science, Northeast Forestry University, Harbin, China
1 shared publication - Yu Guo
College of Science, Northeast Forestry University, Harbin 150001, China
1 shared publication
Latest Publications
- Open Access
- 25 May 2026
- Published by MDPI AG in Micromachines
- Vol. 17 (6) , 652
A High-Sensitivity Relative Humidity and Temperature Fiber Optic Sensor Based on a Chitosan-Coated Mach-Zehnder Interferometer
In this work, we propose a bamboo-shaped Mach-Zehnder interferometer coated with chitosan for relative humidity (RH) and temperature measurement. The sensor is fabricated by fusing no-core fiber and multimode fiber segments through arc discharge, followed by tapering with a hydrogen–oxygen flame to form a unique bamboo-shaped configuration. To functionalize the structure for humidity sensing, chitosan is coated onto the fiber surface. The refractive index of chitosan varies with water molecule adsorption, which enhances the spectral response of the sensor to RH. Therefore, the sensitivity response is enhanced after the film coating is applied. Experimental results demonstrate that the proposed sensor achieves the maximum sensitivities to RH and temperature determined at −0.9261 nm/%RH and 0.0952 nm/°C, respectively. The sensor features a compact structure, high sensitivity and the ability to achieve dual-parameter sensing, which supports applications in biomedical, agricultural and electronic manufacturing fields.
- 25 May 2026
- Published by MDPI AG in Micromachines
- Vol. 17 (6) , 652
Open AccessA High-Sensitivity Relative Humidity and Temperature Fiber Optic Sensor Based on a Chitosan-Coated Mach-Zehnder Interferometer
In this work, we propose a bamboo-shaped Mach-Zehnder interferometer coated with chitosan for relative humidity (RH) and temperature measurement. The sensor is fabricated by fusing no-core fiber and multimode fiber segments through arc discharge, followed by tapering with a hydrogen–oxygen flame to form a unique bamboo-shaped configuration. To functionalize the structure for humidity sensing, chitosan is coated onto the fiber surface. The refractive index of chitosan varies with water molecule adsorption, which enhances the spectral response of the sensor to RH. Therefore, the sensitivity response is enhanced after the film coating is applied. Experimental results demonstrate that the proposed sensor achieves the maximum sensitivities to RH and temperature determined at −0.9261 nm/%RH and 0.0952 nm/°C, respectively. The sensor features a compact structure, high sensitivity and the ability to achieve dual-parameter sensing, which supports applications in biomedical, agricultural and electronic manufacturing fields.