| abstract |
The present invention discloses an improved surface plasmon resonance-based hydrogen sensor with an inclined fiber grating surface structure, having an ASE broadband light source (1), a polarization controller (2), a monomode fiber (3), an air chamber base body (4), an air inlet ( 5), an air outlet (6), a fiber optic Pd/Au thin film hydrogen sensor (7), a spectrum analyzer (8), and an air chamber barrier (9), wherein a surface of the fiber optic Pd/Au thin film hydrogen sensor (7) is coated with an Au nanothin film and a Pd nanothin film, and a fiber core of the Pd/Au thin film fiber optic hydrogen sensor is engraved with a tilted fiber Bragg grating. |