New hydrogen sensor achieves high sensitivity of 5.442 nm/% at 2% gas concentration, indicating effective use of Pd material.
We reported a hydrogen sensor based on small-period long-period fiber grating, which achieved high sensitivity detection of the target gas by combining with Pd material, the sensing sensitivity reached 5.442 nm/% at the gas concentration of 2%.
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Sun et al. (2025) studied this question.
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