An All-Optical Vector Magnetic Field Sensor Based on Magnetic Fluid and Side-Polished Hollow-Core Optical Fiber

We demonstrate an optical fiber vector magnetic field sensor based on Mach-Zehnder interferometer by splicing a section of side-polished hollow-core fiber between two sections of single-mode fiber. As a varied magnetic field is applied to the magnetic fluid encapsulated sandwiched structure, the transmission spectra of the sensor will vary with the intensity and the direction of the magnetic field...