Feng Zhou , Cun Chang , Qing Chang , Haolin Zhang , Zhe Yu , Wangyang Liu , Jianwei Li , Jiuru Yang
{"title":"Orthogonal salinity and temperature detection via paralleled dual all-fiber interferometers","authors":"Feng Zhou , Cun Chang , Qing Chang , Haolin Zhang , Zhe Yu , Wangyang Liu , Jianwei Li , Jiuru Yang","doi":"10.1016/j.optcom.2025.131688","DOIUrl":null,"url":null,"abstract":"<div><div>In this paper, a novel fiber-optic dual parameter sensor for the accurate temperature and salinity detection is realized by parallel-connecting a micro-open cavity and a polarization-maintaining fiber based Sagnac-loop interferometer. The full-coincided free spectrum range and extinction ratio of fringes are guaranteed to the orthogonality of sensing. Experimental results show that the superimposed spectrum presents obvious intensity variation in temperature tests but an improved wavelength salinity response is gained. The maximum sensitivities reach −3.5 nm/‰ and 4.78 dB/°C, respectively. Therefore, highly-discriminative and highly-sensitive salinity and temperature measurements can be achieved with the errors of 1.21 % and 0.44 %.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"583 ","pages":"Article 131688"},"PeriodicalIF":2.5000,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Optics Communications","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0030401825002160","RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/3/1 0:00:00","PubModel":"Epub","JCR":"Q2","JCRName":"OPTICS","Score":null,"Total":0}
引用次数: 0
Abstract
In this paper, a novel fiber-optic dual parameter sensor for the accurate temperature and salinity detection is realized by parallel-connecting a micro-open cavity and a polarization-maintaining fiber based Sagnac-loop interferometer. The full-coincided free spectrum range and extinction ratio of fringes are guaranteed to the orthogonality of sensing. Experimental results show that the superimposed spectrum presents obvious intensity variation in temperature tests but an improved wavelength salinity response is gained. The maximum sensitivities reach −3.5 nm/‰ and 4.78 dB/°C, respectively. Therefore, highly-discriminative and highly-sensitive salinity and temperature measurements can be achieved with the errors of 1.21 % and 0.44 %.
期刊介绍：
Optics Communications invites original and timely contributions containing new results in various fields of optics and photonics. The journal considers theoretical and experimental research in areas ranging from the fundamental properties of light to technological applications. Topics covered include classical and quantum optics, optical physics and light-matter interactions, lasers, imaging, guided-wave optics and optical information processing. Manuscripts should offer clear evidence of novelty and significance. Papers concentrating on mathematical and computational issues, with limited connection to optics, are not suitable for publication in the Journal. Similarly, small technical advances, or papers concerned only with engineering applications or issues of materials science fall outside the journal scope.
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
