采用羟乙基纤维素膜的光纤相对湿度传感器

doi:10.19665/j.issn1001-2400.2020.02.008

西安电子科技大学学报 ›› 2020, Vol. 47 ›› Issue (2): 54-59.doi: 10.19665/j.issn1001-2400.2020.02.008

采用羟乙基纤维素膜的光纤相对湿度传感器

李金泽,张建奇,孙浩()

西安电子科技大学物理与光电工程学院,陕西西安 710071

收稿日期:2019-07-06 出版日期:2020-04-20 发布日期:2020-04-26
通讯作者: 孙浩
作者简介:李金泽(1990—),男,西安电子科技大学博士研究生,E-mail:Jinze_lee@vip.163.com
基金资助:
国家自然科学基金(61705172);陕西省自然科学基础研究计划(2018JQ6054);高等学校学科创新引智计划(B17035)

Optical fiber relative humidity sensor using the hydroxyethyl cellulose hydrogel film

LI Jinze,ZHANG Jianqi,Sun Hao()

School of Physics and Optoelectronic Engineering, Xidian University, Xi’an 710071, China

Received:2019-07-06 Online:2020-04-20 Published:2020-04-26
Contact: Hao Sun

摘要/Abstract

摘要：

为了验证羟乙基纤维素水凝胶用作光纤传感器湿敏材料的可行性,设计了一种新的基于羟乙基纤维素的光纤湿度传感器。首先将150μm长的空芯光纤熔接到单模光纤上,然后在空芯光纤的端面覆盖一层10μm厚的羟乙基纤维素水凝膜,最后将所制作的湿度传感器放置到恒温恒湿箱进行湿度响应测试。实验结果表明, 所设计的传感器具有良好的湿度响应特性,灵敏度可达224.5pm/%环境相对湿度,环境相对湿度从35%至85%的响应时间只需2.75s。作为一种良好的湿敏材料,羟乙基纤维素在各类湿度传感器中都具有很好的应用前景。

关键词: 光纤传感器, 相对湿度, 羟乙基纤维素, 空芯光纤

Abstract:

In order to demonstrate the feasibility of hydroxyethyl cellulose hydrogel as an optical fiber sensor moisture sensitive material, a new optical fiber humidity sensor based on hydroxyethyl cellulose is proposed. First, a hollow-core fiber(150μm) is fused to a single mode fiber. Second, a 10μm thick hydroxyethyl cellulose hydrogel film is coated on the end face of the hollow-core fiber. Finally, the proposed humidity sensor is placed in a constant temperature and humidity chamber for a humidity response test. Experimental results show that this sensor has good humidity response characteristics and only needs 2.75s from 35%-85% RH, with the RH sensitivity being 224.5pm/%RH. As a good moisture sensitive material, hydroxyethyl cellulose has a good application prospect in various humidity sensors.

Key words: optical fiber sensor, relative humidity, hydroxyethyl cellulose, hollow-core fiber

中图分类号:

TN253

李金泽,张建奇,孙浩. 采用羟乙基纤维素膜的光纤相对湿度传感器[J]. 西安电子科技大学学报, 2020, 47(2): 54-59.

LI Jinze,ZHANG Jianqi,Sun Hao. Optical fiber relative humidity sensor using the hydroxyethyl cellulose hydrogel film[J]. Journal of Xidian University, 2020, 47(2): 54-59.

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采用羟乙基纤维素膜的光纤相对湿度传感器

Optical fiber relative humidity sensor using the hydroxyethyl cellulose hydrogel film

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