Optical fiber loop with thermosensitive composite material layer as well as preparation method and application of optical fiber loop

The invention discloses an optical fiber loop with a thermosensitive composite material layer and a preparation method and application thereof, and the preparation method comprises the steps: preparing a thermosensitive composite material which is formed by mixing conductive particles and an organic polymer; an optical fiber is provided, the surface of the optical fiber is coated with the thermosensitive composite material, curing is completed, and the optical fiber with a thermosensitive composite material layer is obtained; continuously coating the insulating adhesive on the surface of the thermosensitive composite material layer, winding into a ring, and curing into a whole; and respectively leading out a first electrode and a second electrode on the basis of the tail fiber parts at the two ends of the prepared optical fiber loop to obtain the optical fiber loop with the thermosensitive composite material layer. The resistance and the temperature of the thermosensitive composite material layer in the optic