An all-optical fiber sensor fabricated by a femtosecond laser for temperature sensing

Longjiang Zhao; Lan Jiang; Sumei Wang; Hai Xiao; Yongfeng Lu; Hai Lung Tsai

doi:10.1166/sl.2011.1559

An all-optical fiber sensor fabricated by a femtosecond laser for temperature sensing

Longjiang Zhao, Lan Jiang^*, Sumei Wang, Hai Xiao, Yongfeng Lu, Hai Lung Tsai

^*Corresponding author for this work

School of Mechanical Engineering

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

1 Citation (Scopus)

Abstract

An all-optical fiber temperature sensor fabricated by a femtosecond (fs) laser is proposed in this study. The fiber sensor is of a very simple structure: a trench that overlaps with the fiber core, which makes a two light paths structure inline the fiber where one is the remained fiber core and the other is the trench. Then, the two transmitted beams interfere with each other and form a Mach-Zehnder interferometer (MZI). The sensor sensitivity is 55 pm/°C at temperatures in range of 30-220 °C with a step of 10 °C. The fringe visibility of the all-optical fiber sensor is greater than 30 dB at 150 °C for interference dip wavelengths, and the attenuation band has a 3 dB line-width of about 0.8 nm.

Original language	English
Pages (from-to)	1948-1951
Number of pages	4
Journal	Sensor Letters
Volume	9
Issue number	5
DOIs	https://doi.org/10.1166/sl.2011.1559
Publication status	Published - Oct 2011

Keywords

All-optical fiber sensor
Femtosecond laser
Temperature sensing

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10.1166/sl.2011.1559

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title = "An all-optical fiber sensor fabricated by a femtosecond laser for temperature sensing",

abstract = "An all-optical fiber temperature sensor fabricated by a femtosecond (fs) laser is proposed in this study. The fiber sensor is of a very simple structure: a trench that overlaps with the fiber core, which makes a two light paths structure inline the fiber where one is the remained fiber core and the other is the trench. Then, the two transmitted beams interfere with each other and form a Mach-Zehnder interferometer (MZI). The sensor sensitivity is 55 pm/°C at temperatures in range of 30-220 °C with a step of 10 °C. The fringe visibility of the all-optical fiber sensor is greater than 30 dB at 150 °C for interference dip wavelengths, and the attenuation band has a 3 dB line-width of about 0.8 nm.",

keywords = "All-optical fiber sensor, Femtosecond laser, Temperature sensing",

author = "Longjiang Zhao and Lan Jiang and Sumei Wang and Hai Xiao and Yongfeng Lu and Tsai, {Hai Lung}",

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AU - Zhao, Longjiang

AU - Jiang, Lan

AU - Wang, Sumei

AU - Xiao, Hai

AU - Lu, Yongfeng

AU - Tsai, Hai Lung

PY - 2011/10

Y1 - 2011/10

N2 - An all-optical fiber temperature sensor fabricated by a femtosecond (fs) laser is proposed in this study. The fiber sensor is of a very simple structure: a trench that overlaps with the fiber core, which makes a two light paths structure inline the fiber where one is the remained fiber core and the other is the trench. Then, the two transmitted beams interfere with each other and form a Mach-Zehnder interferometer (MZI). The sensor sensitivity is 55 pm/°C at temperatures in range of 30-220 °C with a step of 10 °C. The fringe visibility of the all-optical fiber sensor is greater than 30 dB at 150 °C for interference dip wavelengths, and the attenuation band has a 3 dB line-width of about 0.8 nm.

AB - An all-optical fiber temperature sensor fabricated by a femtosecond (fs) laser is proposed in this study. The fiber sensor is of a very simple structure: a trench that overlaps with the fiber core, which makes a two light paths structure inline the fiber where one is the remained fiber core and the other is the trench. Then, the two transmitted beams interfere with each other and form a Mach-Zehnder interferometer (MZI). The sensor sensitivity is 55 pm/°C at temperatures in range of 30-220 °C with a step of 10 °C. The fringe visibility of the all-optical fiber sensor is greater than 30 dB at 150 °C for interference dip wavelengths, and the attenuation band has a 3 dB line-width of about 0.8 nm.

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An all-optical fiber sensor fabricated by a femtosecond laser for temperature sensing

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Keywords

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