Title :
Simultaneous hydrostatic pressure and temperature measurement employing a LP01-LP11 fiber-optic polarization-sensitive intermodal interferometer
Author :
Bock, Wojtek J. ; Eftimov, Tinko A.
Author_Institution :
Lab. d´´Optoelectronique, Quebec Univ., Canada
Abstract :
The authors propose a polarization-sensitive LP01-LP 11 two-mode interferometer employing a highly birefringent fiber for the direct simultaneous measurement of high hydrostatic pressure and ambient temperature. The results show that the most suitable type of birefringent fiber for this type of two-parameter sensing is the bow-tie fiber, whereas elliptical-core and D-shaped fibers exhibit nonlinear dependence of their sensitivities. The results are found to be in agreement with a recently developed Müller-Stokes formalism describing polarization effects in the case of two-mode interference. Initial calibration of the two parameter simultaneous pressure-and-temperature sensor has also been performed up to 100 MPa using a primary pressure standard
Keywords :
birefringence; calibration; fibre optic sensors; light interference; light interferometers; light polarisation; measurement standards; pressure measurement; temperature measurement; 100 MPa; D-shaped fibers; Mu¨ller-Stokes formalism; ambient temperature; bow-tie fiber; calibration; direct simultaneous measurement; elliptical core fibre; fiber-optic polarization-sensitive intermodal interferometer; highly birefringent fiber; hydrostatic pressure; nonlinear dependence; primary pressure standard; temperature measurement; two-mode interference; two-parameter sensing; Birefringence; Capacitive sensors; Optical fiber polarization; Optical fiber sensors; Optical interferometry; Phase shifting interferometry; Strain measurement; Temperature measurement; Temperature sensors; Thermal sensors;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 1993. IMTC/93. Conference Record., IEEE
Conference_Location :
Irvine, CA
Print_ISBN :
0-7803-1229-5
DOI :
10.1109/IMTC.1993.382605
