A novel temperature-insensitive optical fiber pressure sensor for harsh environments

Author

Xu, Juncheng ; Pickrell, Gary ; Wang, Xingwei ; Peng, Wei ; Cooper, Kristie ; Wang, Anbo

Author_Institution

Dept. of Electr. & Comput. Eng., State Univ., Blacksburg, VA, USA

Volume

17

Issue

4

fYear

2005

fDate

4/1/2005 12:00:00 AM

Firstpage

870

Lastpage

872

Abstract

A novel diaphragm-based miniature optical fiber pressure sensor has been shown to work at temperatures up to 700°C with a sensitivity of 2.93 nm/psi and a resolution of 0.01 psi (68.9 Pa). A passive temperature compensation scheme was used to reduce the temperature dependence to 0.0076 psi/°C (52.4 Pa/°C). The sensor exhibited a linear response in the available testing range from 0 to 200 psi (1.38 MPa), and being composed entirely of fused silica, the sensor´s structure is very reliable, corrosion resistant, and immune to electromagnetic interference.

Keywords

compensation; corrosion resistance; fibre optic sensors; pressure sensors; reliability; 1.38 MPa; 68.9 Pa; 700 degC; corrosion resistance; electromagnetic interference immunity; optical fiber pressure sensor; reliability; temperature compensation; Bonding; Optical fiber sensors; Optical fibers; Pressure measurement; Sensor fusion; Silicon compounds; Temperature dependence; Temperature sensors; Thermal sensors; Thermal stresses; Diaphragm; high temperature; optical fiber; pressure sensor;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2005.844013

Filename

1411904