Fabrication and characterization of low-cost polarimetric fiber-optic pressure sensor

Polarimetric optical fiber sensors exploit the variation in the polarization state of light transmitted from a single-mode fiber with external factor, such as pressure, temperature, etc. to estimate these physical quantities. In this paper we present the principles, fabrication and operation of a low-cost polarimetric pressure sensor that is based on the coupling between the two orthogonally polarized fundamental modes in a standard telecommunication fiber.