期刊
SENSORS
卷 22, 期 8, 页码 -出版社
MDPI
DOI: 10.3390/s22082965
关键词
long period fiber grating; etching; cladding mode; sidelobes; sensitivity enhancement
资金
- SERB, Government of India [ODF/2018/000288]
A new methodology to enhance the sensitivity of a long period fiber grating sensor (LPFG) at the Turn Around Point (TAP) has been presented. The LPFG sensor was fabricated by etching the fiber up to 20.4 μm, until the sidelobes of dispersed LP0,2 cladding mode appeared near TAP in aqueous medium. The dual peak sensitivity of the sidelobes was found to be 16,044 nm/SRIU (surrounding refractive index units) in the RI range from 1.333 to 1.3335.
A new methodology to enhance the sensitivity of a long period fiber grating sensor (LPFG) at the Turn Around Point (TAP) is here presented. The LPFG sensor has been fabricated by etching the fiber up to 20.4 mu m, until the sidelobes of dispersed LP0,2 cladding mode appeared near TAP in aqueous medium. The dual peak sensitivity of the sidelobes was found to be 16,044 nm/SRIU (surrounding refractive index units) in the RI range from 1.333 to 1.3335.
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