title: ÐÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ðµ Ð²Ð»Ð¸ÑÐ½Ð¸Ñ Ð´Ð²ÑÐ»ÑÑÐµÐ¿ÑÐµÐ»Ð¾Ð¼Ð»ÐµÐ½Ð¸Ñ ÑÐ²ÐµÑÐ¾Ð²Ð¾Ð´Ð° Ð½Ð° ÑÐ¸Ð³Ð½Ð°Ð»Ñ Ð¼ÐµÐ¶Ð¼Ð¾Ð´Ð¾Ð²Ð¾Ð³Ð¾ Ð²Ð¾Ð»Ð¾ÐºÐ¾Ð½Ð½Ð¾Ð³Ð¾ Ð¸Ð½ÑÐµÑÑÐµÑÐ¾Ð¼ÐµÑÑÐ°
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¼Ð°Ð³Ð¸ÑÑÑÐ°
titleType: Subtitle
title: Investigation of the influence of fiber birefringion on signals of intermode fiber interferometer
Creators: name: ÐÐ¾ÑÐ¸ÑÐ¾Ð²ÑÐºÐ¸Ð¹, ÐÐ»ÐµÐºÑÐ°Ð½Ð´Ñ
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2022
Subjects: ÐÐ½ÑÐµÑÑÐµÑÐ¾Ð¼ÐµÑÑÑ
Ð¼Ð½Ð¾Ð³Ð¾Ð¼Ð¾Ð´Ð¾Ð²Ð¾Ðµ Ð²Ð¾Ð»Ð¾ÐºÐ½Ð¾
Ð´Ð²ÑÐ»ÑÑÐµÐ¿ÑÐµÐ»Ð¾Ð¼Ð»ÐµÐ½Ð¸Ðµ
ÐºÐ¾ÑÑÐµÐ»ÑÑÐ¸Ð¾Ð½Ð½Ð°Ñ Ð¾Ð±ÑÐ°Ð±Ð¾ÑÐºÐ°
multimode fiber
birefringence
correlation processing

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description: Topic of the final qualification work: "Investigation of the influence of the birefringence of a light guide on the signals of an intermode fiber interferometer". This work is devoted to studying the output characteristics of a multimode fiber interferometer under conditions of signal polarization fading. The paper considers various parameters of the radiation intensity at the output end of the fiber (that is, when it is measured by a point receiver located in the near zone), considering the presence of external influence. Under the external influence is meant the method of âbendingâ a multimode optical fiber, leading to the occurrence of the phenomenon of birefringence. As measures to combat polarization fading, various demodulation techniques are considered that can be applied to combat the resulting fading. As the results of the work, expressions for the intensity at the output of a multimode fiber interferometer are presented, considering the phenomenon of birefringence and the dependence of the correlation coefficient on the amount of fiber elongation (correlation characteristic). A demonstration has been carried out to determine the degree of influence of the phenomenon of birefringence on the output signal of a multimode fiber interferometer. A demonstration was also made with the elimination of polarization fading using the correlation signal processing method.