Method for measuring the refractive index of cylindrical billets in order to control the technology of production of optical fibers
DOI: 10.31673/2412-4338.2019.033945
Abstract
The method of measuring the refractive index of cylindrical blanks in order to control the technology of production of optical fibers. A method is proposed for determining the refractive index for the preparation of the core of an optical fiber using the principles of the phenomenon of light scattering. Moreover, the main existing methods for measuring the refractive index are: methods for directly measuring the angle of refraction of light when it passes the interface between two media, methods based on the phenomenon of total internal reflection, as well as interference methods.
Thus, to ensure the control of the technological process for the production of optical fiber in the early stages, it is necessary to use the method of measuring its optical parameters taking into account the above remarks. For this purpose, a method based on the phenomenon of light scattering was proposed in the work. When developing the method, the principles of quantum electrodynamics were used, according to which the luminous flux directed to the object under study is a set of discrete formations - light quantum. The light reflection coefficient at the interface of two optical media in this case represents the probability of reflection of a quantum from the interface. The scattering indicatrix obtained as a result of the scattering process for an object with a specific geometry and refractive index value uniquely determines the refractive index of the object under study.
The results of a study of the scattering phenomenon using an example of an optical cylindrical element showed the possibility of determining the refractive index of a specimen for the production of optical fiber.
Keywords: fiber-optic communication, refractive index, fiber, access network, transport network, measurements.
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