Work

High precision measurement of the light polarization plane rotation angle

Year: 2025

Type: article

Abstract: Sensors using tilted fiber Bragg gratings (TFBGs) are of great interest for researchers because of their high precision, compact size and resilience in harsh environments. However, the precision and reliability of the measurements made with them often depend on the polarization orientation. It is, therefore, necessary to control the rotation angle of the light polarization plane. Existing methods of measuring such an angle of light propagating in an optical fiber offer low measurement precision, require a long calibration process involving a human operator, or allow measurements only in narrow ranges of the rotation angle. In this study, we introduce a method of measuring the polarization plane rotation angle of light propagating in an optical fiber using two parallel TFBGs rotated relative to each other. The proposed method offers fully automatic calibration without human intervention and a greatly simplified calculation method. Our findings indicate that our method outperforms other methods in precision and reliability of measurement. The proposed method allows for measurements in the 0°-180° range with a mean absolute error of 0.064°.

Source: Optics Express

DOI: 10.1364/oe.564677

Authors: Grzegorz Kozieł, Piotr Kisała

Language: English

Topic: Advanced Fiber Optic Sensors

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,270

Funder: Politechnika Lubelska

Award: G4521617428