Fiber-optic Fabry-Perot hydrogen sensor coated with Pd-Y film

Abstract

A fiber-optic Fabry-Perot hydrogen sensor was developed by measuring the fringe contrast changes at different hydrogen concentrations. The experimental results indicated that the sensing performance with the Pd-Y film was better than that with the Pd film. A fringe contrast with a decrease of 0.5 dB was detected with a hydrogen concentration change from 0% to 5.5%. The temperature response of the sensor was also measured.

Keywords

Optical fiber sensor / hydrogen sensor / Pd-Y film / fringe contrast / temperature characteristics

References

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