Capable of realizing the high-precision measurement of physical quantity, PMF fiber is widely used in interferometric fiber optic sensor, which is theoretically based on optical coherent detection, fiber optic gyro and fiber optic hydrophone. Fibercore's family of PM fiber is called HiBi for its high birefringence and is manufactured with the Bow-Tie. Fiber-optic sensing (FOS) technology has emerged as a cutting-edge research focus in the sensor field due to its miniaturized structure, high sensitivity, and remarkable electromagnetic interference immunity. Compared with conventional sensing technologies, FOS demonstrates superior capabilities in. In fiber optics, polarization-maintaining optical fiber (PMF or PM fiber) is a single-mode optical fiber in which linearly polarized light, if properly launched into the fiber, maintains a linear polarization during propagation, exiting the fiber in a specific linear polarization state; there is. Polarization-maintaining fiber array can normally ensure the direction of linear polarization and effectively improve the coherent signal-to-noise ratio. Our PM fibre is field-proven as the industry standard. Fujikura is the benchmark for PM fibre. We are the global leader in the design & manufacture of polarisation maintaining optical fibres.