A temperature independent inclinometer based on a tapered fiber bragg grating in a fiber ring laser

Lin，Weihao1,2; Zhou，Shengjie1; Shao，Liyang1; Vai，Mang I.2; Shum，Perry Ping1; Xu，Weijie1; Zhao，Fang1; Yu，Feihong1; Liu，Yibin1; Liu，Yuhui1; Liu，Shuaiqi1,2

2021-05-01

10.3390/s21092892

SENSORS   影响因子和分区

1424-8220

1424-8220

We demonstrate a new concept for an all-fiber inclinometer based on a tapered fiber Bragg grating (tFBG) in a fiber ring laser (FRL) with the capability of measuring the tilt angle and temperature simultaneously. The sensor performance is analyzed theoretically and investigated experimentally. The dependence of tilt angle on the spectral response in variable temperature conditions was measured. Two inclinometers with different lengths have been fabricated and characterized in FRL. The sensitivity is 0.583 dB/ and 0.849 dB/, respectively, in the range of 0 to 90 . Thanks to the FRL system, narrow 3-dB bandwidth (<0.1 nm) and high optical signal-to-noise ratio (~60 dB) are achieved. The tFBG in the FRL system can be used for working as a temperature insensitive inclinometer. The results suggested that the proposed inclinometer has the advantages of compact size and convenient manufacture, enhancing its potential for application prospect.

Fiber ring laser Inclinometer Tapered fiber Bragg grating

SCI ; EI

英语

第一 ; 通讯

Chemistry ; Engineering ; Instruments & Instrumentation

Chemistry, Analytical ; Engineering, Electrical & Electronic ; Instruments & Instrumentation

WOS:000650771200001

MDPI

20211710246012

Fiber Bragg gratings ; Ring lasers ; Signal to noise ratio

Information Theory and Signal Processing:716.1 ; Lasers:744

CHEMISTRY

2-s2.0-85104456278

Scopus

1.Department of Electrical and Electronic Engineering,Southern University of Science and Technology,Shenzhen,518055,China
2.Department of Electrical and Computer Engineering,Faculty of Science and Technology,University of Macau,999078,Macao

Lin，Weihao,Zhou，Shengjie,Shao，Liyang,et al. A temperature independent inclinometer based on a tapered fiber bragg grating in a fiber ring laser[J]. SENSORS,2021,21(9).

Lin，Weihao.,Zhou，Shengjie.,Shao，Liyang.,Vai，Mang I..,Shum，Perry Ping.,...&Liu，Shuaiqi.(2021).A temperature independent inclinometer based on a tapered fiber bragg grating in a fiber ring laser.SENSORS,21(9).

Lin，Weihao,et al."A temperature independent inclinometer based on a tapered fiber bragg grating in a fiber ring laser".SENSORS 21.9(2021).