Novel method to pseudoheterodyne a polarimetric fiber optic sensor.
The insertion of a rotating halfwave plate (RHWP) into a polarimetric fiber optic scheme is analyzed. The RHWP allows phase control of the autointerference signal and can be used to pseudoheterodyne the polarimetric setup. The scheme is applied to a polarimetric sensor of a dynamic strain and permits full recovery of the elongation signal.
Martinelli
M
M
Vavassori
P
P