DEVICE FOR MONITORING THE DEFORMATION OF A WORK, USE OF AN OPTICAL FIBER AND SURVEILLANCE METHOD PARTICULARLY ADAPTED TO IRRADIATED ENVIRONMENTS

摘要

The invention relates to a device (200) for monitoring the deformation of a zone of a structure (100). The device (200) includes a first optical fiber (210) for equipping the work area (100) and an optical measurement system (220) configured to perform along said portion of the first optical fiber (210). a Brillouin type measurement to determine the deformation of said first optical fiber portion (210). The first optical fiber (210) includes nitrogen as a fiber core dopant. The invention further relates to the use of an optical fiber for monitoring an area of a structure, a method of monitoring a zone of a structure and a structure, said structure being irradiated or succeptible of the to be.