Magnetic and pressure sensors using the compensated polarimetric sensor configuration
Abstract
The identical lengths of high birefringence fiber spliced together with a 90 deg axial rotation to couple their orthogonal birefringent axes form the basis of a compensated polarimetric optical fiber sensor. This can be used to detect differential strains in the two fiber lengths caused by such phenomena as hydrostatic pressure or magnetic fields (the strain being introduced by magnetostrictive material bonded to the fiber). Magnetic and pressure sensors were constructed using this principle and show good sensitivity yet better stability then Mach-Zehnder arrangements.
- Publication:
-
In AGARD Guided Opitcal Structures in the Military Environment 7 p (SEE N87-13273 04-74
- Pub Date:
- May 1986
- Bibcode:
- 1986gosm.agarR....D
- Keywords:
-
- Fiber Optics;
- Magnetic Fields;
- Magnetometers;
- Polarimeters;
- Pressure Sensors;
- Birefringence;
- Hydrostatic Pressure;
- Instrument Compensation;
- Sensitivity;
- Optics