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

Research output: Contribution to journalArticle

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 languageEnglish (US)
Pages (from-to)1948-1951
Number of pages4
JournalSensor Letters
Volume9
Issue number5
DOIs
StatePublished - Oct 1 2011

Fingerprint

Fiber optic sensors
Ultrashort pulses
optical fibers
fibers
Fibers
sensors
lasers
Temperature
Mach-Zehnder interferometers
temperature
Sensors
temperature sensors
Temperature sensors
visibility
Visibility
Linewidth
Optical fibers
attenuation
interference
Wavelength

Keywords

  • All-optical fiber sensor
  • Femtosecond laser
  • Temperature sensing

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

Cite this

An all-optical fiber sensor fabricated by a femtosecond laser for temperature sensing. / Zhao, Longjiang; Jiang, Lan; Wang, Sumei; Xiao, Hai; Lu, Yongfeng; Tsai, Hai Lung.

In: Sensor Letters, Vol. 9, No. 5, 01.10.2011, p. 1948-1951.

Research output: Contribution to journalArticle

Zhao, Longjiang ; Jiang, Lan ; Wang, Sumei ; Xiao, Hai ; Lu, Yongfeng ; Tsai, Hai Lung. / An all-optical fiber sensor fabricated by a femtosecond laser for temperature sensing. In: Sensor Letters. 2011 ; Vol. 9, No. 5. pp. 1948-1951.
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