Mechanisms of signal loss and reflection in optical fibers and their impact on radio direction finding efficiency in bent cable routes

Askar A. Abdykadyrov, Mereke O. Yerishova, Ainur Kuttybayeva, Muratbek Yermekbayev, Arnay Amanzholov

2025

Full text Open access: Gold Metadata (CSL-JSON)
DOI 10.53894/ijirss.v8i3.7706
Data confidence 85 high
How this score is calculated

It is built from checkable properties of the record itself: whether the article has a DOI, how many independent sources confirmed its data, whether the required fields are filled in, and how recent the latest confirmation is. Disagreement between sources and a missing identifier lower it. A value of 80 or above means the record was published without further checking; 60 to 79 means it is published at reduced confidence, with a manual check advisable. A record verified by an editor by hand is never pushed below 90 by a recalculation. This scores our data about the article, not the article itself.

Abstract

This scientific research investigates the mechanisms of signal loss and reflection in bent optical fiber routes and analyzes their impact on the efficiency of radio direction-finding systems based on numerical and experimental data. The study revealed that at bending angles from 30° to 90°, signal loss increased from 0.05 dB to 0.25 dB, and the reflection coefficient rose from 1.2% to 4.8%, leading to a decrease in system sensitivity from 95.4% to 81.7%. Engineering solutions proposed include the use of bend-insensitive fibers, maintaining a minimum bending radius of the route, OTDR monitoring, and integration of regenerators. Additionally, channel capacity is enhanced through DWDM technology. The research results provide a scientific foundation aimed at improving the reliability and performance of optical communication and radio direction-finding systems.