Estimation of the level of dispersion in optical cables in conducting the input control using a holographic interferometer

In conducting incoming control, the analysis of the quality of an optical fiber can be carried out only by assessing the level of dispersion in the optical fiber, therefore, the task of accurately measuring the level of dispersion is the most important. Currently, the level of dispersion of the signal in an optical fiber is estimated on a section of this fiber using a laser emitter that emits a luminous flux of a known intensity and measuring the power of the optical signal at the input and output of the fiber using special devices (for example, a reflector). The holographic interferometer developed by the authors makes it possible to analyze optical fiber more accurate at the lowest cost and, when analyzing on a functioning connection line without significantly increasing its mass-dimensional characteristics.