Design and simulation of a hybrid coated LPG-TFBG-FBG three-parameter sensor for an ocean environment

材料科学 声学 环境科学 海洋工程 物理 工程类
作者
Yuxuan Yan,Zhengtian Gu,Huiping Jiang,Zhengyuan Li,Jinyi Wu,Ying Wang
出处
期刊:Journal of The Optical Society of America B-optical Physics [Optica Publishing Group]
卷期号:39 (8): 2109-2109 被引量:7
标识
DOI:10.1364/josab.459329
摘要

Based on the demand for monitoring conductivity, temperature, and depth (CTD) in the ocean, a hybrid coated long-period fiber grating, tilted fiber Bragg grating, and fiber Bragg grating (LPG-TFBG-FBG) structure is proposed, which could eliminate the mutual interference of CTD in measurements. First, according to coupled mode theory and phase matching conditions, the coupling equation of each segment of the grating is deduced. Next, through the difference iterative method, the total transfer matrix of coated LPG-TFBG-FBG is obtained. Then, to improve the sensitivity of the structure and make the demodulation more accurate and convenient, the structure of the grating is optimized. On this basis, the transmission spectrum of the structure is simulated, and three peaks formed by coupling the forward core mode with the forward cladding mode in LPG ( λ L c l ), the backward high-order cladding mode in TFBG ( λ TB c l ), and the backward cladding mode in FBG ( λ B c l ) are investigated. Furthermore, the sensing characteristics of the surrounding refractive index (SRI), temperature, and water pressure of the peaks are analyzed, and the three peaks show different sensitivities to environmental parameters. Therefore, a three-parameter matrix equation is established, and the three parameters can be measured simultaneously without interference. The simulation results of the response of the three transmission peaks to the three parameters show good performance in both bandwidth (less than 5 nm) and linearity (all larger than 0.99). The maximum sensitivities of the three transmission peaks to SRI, temperature, and water pressure are 343 n m / R I U , 1318.7 p m / C , and 9.5 n m / M p a , respectively. Finally, the condition number of the parametric demodulation matrix is 581.5822, indicating that the inversion of the resonant wavelength offset has high precision. To our knowledge, this is the first optical fiber CTD sensor based on fiber gratings that can compensate for each other regarding CDT. The proposed coated LPG-TFBG-FBG structure has good linearity and high sensitivity, which give this structure great application potential in the fields of multi-parameter sensing and segmented sensing.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
笑哥完成签到,获得积分10
刚刚
Teko发布了新的文献求助10
1秒前
Hello应助Ivy采纳,获得10
1秒前
yangkang完成签到,获得积分10
1秒前
CAOHOU给杭谷波的求助进行了留言
1秒前
2秒前
deng203完成签到,获得积分10
2秒前
zl完成签到 ,获得积分10
3秒前
11发布了新的文献求助10
3秒前
一半可完成签到,获得积分10
3秒前
3秒前
文艺鞋子发布了新的文献求助10
3秒前
ZHANG完成签到,获得积分20
4秒前
研友_VZG7GZ应助wergou采纳,获得10
4秒前
4秒前
祁依欧欧完成签到,获得积分10
5秒前
强健的幻丝完成签到,获得积分10
5秒前
aaaa发布了新的文献求助10
5秒前
我是哑巴发布了新的文献求助10
5秒前
5秒前
AKING完成签到,获得积分10
5秒前
科目三应助大道采纳,获得10
6秒前
Miss_Q完成签到 ,获得积分10
6秒前
sky发布了新的文献求助10
7秒前
Owen应助搞怪慕凝采纳,获得10
7秒前
SYLH应助要减肥岩采纳,获得10
7秒前
7秒前
7秒前
7秒前
8秒前
8秒前
11完成签到,获得积分10
9秒前
ZHANG发布了新的文献求助20
9秒前
9秒前
Coldpal完成签到,获得积分10
9秒前
小虫子发布了新的文献求助10
10秒前
SONG发布了新的文献求助10
10秒前
10秒前
英姑应助梨理栗采纳,获得10
10秒前
tianzhanggong发布了新的文献求助10
11秒前
高分求助中
【提示信息,请勿应助】关于scihub 10000
The Mother of All Tableaux: Order, Equivalence, and Geometry in the Large-scale Structure of Optimality Theory 3000
Social Research Methods (4th Edition) by Maggie Walter (2019) 2390
A new approach to the extrapolation of accelerated life test data 1000
北师大毕业论文 基于可调谐半导体激光吸收光谱技术泄漏气体检测系统的研究 390
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
Robot-supported joining of reinforcement textiles with one-sided sewing heads 360
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 4009905
求助须知:如何正确求助?哪些是违规求助? 3549896
关于积分的说明 11304149
捐赠科研通 3284441
什么是DOI,文献DOI怎么找? 1810658
邀请新用户注册赠送积分活动 886424
科研通“疑难数据库(出版商)”最低求助积分说明 811406