Review of Magnetic Fluid Fiber Magnetic Field Sensing Technology Based on Interference Mechanism

Magnetic fluid is a new type of optical functional material, which has excellent magneto-optical properties in magnetic field media. On this basis, many scholars have combined it with fiber-optic sensing technology to make a variety of fiber-optic magnetic field sensors based on interference mechanism. The technical performance of magnetic fluid fiber magnetic field sensors based on interference mechanism is analyzed, and the research status and progress of magnetic fluid-based fiber-optic magnetic field sensors are summarized and prospected in this article.