Output power changes on the optical fiber sensor for hydrogen gas have been illustrated.

  • Why does the Pd-Cu sensor show no sensitivity at low hydrogen percentages while the Pd sensor does?
  • Why does the slope of sensitivity increase, especially in the 4 to 6% hydrogen range, more for the Pd-Cu sensor compared to Pd?
  • Why does the Pd-Cu sensor exhibit non-linear behavior, especially in the 7 and 8% hydrogen percentages, while the Pd sensor is more linear?
  • Best regards,

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