ROTATION AND TWIST MEASUREMENT USING TILTED FIBRE BRAGG GRATINGS

被引：17
|
作者：
Kisala, Piotr [1 ]
Skorupski, Krzysztof [1 ]
Cieszczyk, Slawomir [1 ]
Panas, Patryk [1 ]
Klimek, Jacek [1 ]
机构：
[1] Lublin Univ Technol, Fac Elect Engn & Comp Sci, Nadhystrzycka 38D, PL-20618 Lublin, Poland
来源：
METROLOGY AND MEASUREMENT SYSTEMS | 2018年 / 25卷 / 03期
关键词：
photonic sensors; fibre Bragg gratings; twist measurements; rotation measurements; LIQUID-LEVEL; REFRACTIVE-INDEX; SENSORS;
D O I：
10.24425/123893
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
The paper presents a method of measuring the angle of rotation and twist using a tilted fibre Bragg grating (TFBG) periodic structure with a tilt angle of 6 degrees, written into a single-mode optical fibre. It has been shown that the rotation of the sensor by 180 degrees causes a change in the transmission coefficient from 0.5 to 0.84 at a wavelength of 1541.2 nm. As a result of measurements it was determined that the highest sensitivity can be obtained for angles from 30 degrees to 70 degrees in relation to the basic orientation. The change in the transmission spectrum occurs for cladding modes that change their intensity with the change in the polarization of light propagating through the grating. The same structure can also be used to measure the twist angle. The possibility of obtaining a TFBG twist by 200 degrees over a length of 10 mm has been proved. This makes it possible to monitor both the angle of rotation and the twist of an optical fibre with the fabricated TFBG.
引用
收藏
页码：429 / 440
页数：12
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