Femtosecond Laser Ablated FBG with Composite Microstructure for Hydrogen Sensor Application

A composite microstructure in fiber Bragg grating (FBG) with film deposition for hydrogen detection is presented. Through ablated to FBG cladding by a femtosecond laser, straight-trenches and spiral micro-pits are formed. A Pd–Ag film is sputtered on the surface of the laser processed FBG single mod...

Descripción completa

Detalles Bibliográficos
Autores principales: Zou, Meng, Dai, Yutang, Zhou, Xian, Dong, Ke, Yang, Minghong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2016
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5191021/
https://www.ncbi.nlm.nih.gov/pubmed/27916933
http://dx.doi.org/10.3390/s16122040
Descripción
Sumario:A composite microstructure in fiber Bragg grating (FBG) with film deposition for hydrogen detection is presented. Through ablated to FBG cladding by a femtosecond laser, straight-trenches and spiral micro-pits are formed. A Pd–Ag film is sputtered on the surface of the laser processed FBG single mode fiber, and acts as hydrogen sensing transducer. The demonstrated experimental outcomes show that a composite structure produced the highest sensitivity of 26.3 pm/%H, nearly sevenfold more sensitive compared with original standard FBG. It offers great potential in engineering applications for its good structure stability and sensitivity.

Ejemplares similares