The visibility in magnetostrictive fiber-optic interferometric sensors using a Gaussian laser beam is analyzed. It is shown that the conventional Gaussian laser beam has little influence on the visibility. The visibility depends strongly on the input state of polarization (SOP). We implement a cylindrical transducer and build a measurement setup with a polarization controller. The visibility dependent on the SOP of input light is measured. The estimated values are similar to the experiment results, which verifies the analysis.
© 2005 Chinese Optics Letters
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(060.2430) Fiber optics and optical communications : Fibers, single-mode
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.6710) Instrumentation, measurement, and metrology : Susceptibility
Changhai Shi, Jianping Chen, Xinwan Li, Ailun Ye, Junhe Zhou, Yi Zhang, Qing Xue, and Lin Hong, "Visibility in magnetostrictive fiber-optic interferometric sensors and its dependence on the input SOP," Chin. Opt. Lett. 4, 15-17 (2006)