Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7925670 | Optics Communications | 2018 | 6 Pages |
Abstract
An optical cascaded Fabry-Perot interferometer hydrogen sensor based on vernier effect has been proposed and achieved. The proposed sensor, which total length is â¼594 μm, is composed of a segment of large mode area fiber (LMAF) and a segment of hollow-core fiber (HCF). The proposed sensor is coated with the Pt-loaded WO3/SiO2 powder which will result in the increase of local temperature of the sensor head when exposed to hydrogen atmosphere. Thus the hydrogen sensor can be achieved by monitoring the change of resonant envelope wavelength. The hydrogen sensitivity is â1.04 nm/% within the range of 0 % -2.4 % which is greatly improved because of the vernier effect. The response time is â¼80 s. Due to its compact configuration, the proposed sensor provides a feasible and miniature structure to achieve detection of hydrogen.
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Yina Li, Chunliu Zhao, Ben Xu, Dongning Wang, Minghong Yang,