Trench-embedding fiber taper sensor fabricated by a femtosecond laser for gas refractive index sensing

Zhitao Cao; Lan Jiang; Sumei Wang; Peng Wang; Fei Zhang; Yongfeng Lu

doi:10.1364/AO.53.001028

Trench-embedding fiber taper sensor fabricated by a femtosecond laser for gas refractive index sensing

Zhitao Cao, Lan Jiang, Sumei Wang, Peng Wang, Fei Zhang, Yongfeng Lu

Electrical & Computer Engineering

Research output: Contribution to journal › Article › peer-review

13 Scopus citations

Abstract

A fiber in-line, multimode coupling interferometer with a trench-embedding, fiber taper probe is proposed and fabricated by femtosecond-laser-induced water breakdown. The reflection-type taper probe is used for gas refractive index (RI) detection from 1.0001143 to 1.0002187 and temperature sensing from 50°C to 500°C. The largest RI sensitivity of the taper probe embedded with a trench at a width of 18.4 μm is 669.502 nm/RIU for hybrid nitrogen and helium. Temperature sensitivity is 9.97 pm/°C and it shows good linearity through the whole testing range. The new-type multimode interferometer is appropriate for high-accuracy gas RI detection of micrometer-scale spaces and wide-range temperature compensation can be realized.

Original language	English (US)
Pages (from-to)	1028-1032
Number of pages	5
Journal	Applied optics
Issue number	6
DOIs	https://doi.org/10.1364/AO.53.001028
State	Published - Feb 20 2014

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Engineering (miscellaneous)
Electrical and Electronic Engineering

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10.1364/AO.53.001028

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title = "Trench-embedding fiber taper sensor fabricated by a femtosecond laser for gas refractive index sensing",

abstract = "A fiber in-line, multimode coupling interferometer with a trench-embedding, fiber taper probe is proposed and fabricated by femtosecond-laser-induced water breakdown. The reflection-type taper probe is used for gas refractive index (RI) detection from 1.0001143 to 1.0002187 and temperature sensing from 50°C to 500°C. The largest RI sensitivity of the taper probe embedded with a trench at a width of 18.4 μm is 669.502 nm/RIU for hybrid nitrogen and helium. Temperature sensitivity is 9.97 pm/°C and it shows good linearity through the whole testing range. The new-type multimode interferometer is appropriate for high-accuracy gas RI detection of micrometer-scale spaces and wide-range temperature compensation can be realized.",

author = "Zhitao Cao and Lan Jiang and Sumei Wang and Peng Wang and Fei Zhang and Yongfeng Lu",

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AU - Cao, Zhitao

AU - Jiang, Lan

AU - Wang, Sumei

AU - Wang, Peng

AU - Zhang, Fei

AU - Lu, Yongfeng

PY - 2014/2/20

Y1 - 2014/2/20

N2 - A fiber in-line, multimode coupling interferometer with a trench-embedding, fiber taper probe is proposed and fabricated by femtosecond-laser-induced water breakdown. The reflection-type taper probe is used for gas refractive index (RI) detection from 1.0001143 to 1.0002187 and temperature sensing from 50°C to 500°C. The largest RI sensitivity of the taper probe embedded with a trench at a width of 18.4 μm is 669.502 nm/RIU for hybrid nitrogen and helium. Temperature sensitivity is 9.97 pm/°C and it shows good linearity through the whole testing range. The new-type multimode interferometer is appropriate for high-accuracy gas RI detection of micrometer-scale spaces and wide-range temperature compensation can be realized.

AB - A fiber in-line, multimode coupling interferometer with a trench-embedding, fiber taper probe is proposed and fabricated by femtosecond-laser-induced water breakdown. The reflection-type taper probe is used for gas refractive index (RI) detection from 1.0001143 to 1.0002187 and temperature sensing from 50°C to 500°C. The largest RI sensitivity of the taper probe embedded with a trench at a width of 18.4 μm is 669.502 nm/RIU for hybrid nitrogen and helium. Temperature sensitivity is 9.97 pm/°C and it shows good linearity through the whole testing range. The new-type multimode interferometer is appropriate for high-accuracy gas RI detection of micrometer-scale spaces and wide-range temperature compensation can be realized.

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Trench-embedding fiber taper sensor fabricated by a femtosecond laser for gas refractive index sensing

Abstract

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