Compound Clearance Humidity Sensor Based on a Polyvinyl Alcohol (PVA) coated Mach-Zehnder Interferometer (MZI) Using a Broadband Laser as the Light Source

被引：0
|
作者：
Gao, P. [1 ]
Liu, Y. [1 ]
Zheng, X-l. [1 ]
Wang, Z-m. [1 ]
机构：
[1] Shenyang Normal Univ, 253 Huanghe North Ave, Shenyang 110819, Liaoning, Peoples R China
来源：
LASERS IN ENGINEERING | 2023年 / 55卷 / 3-6期
基金：
中国国家自然科学基金;
关键词：
Broadband laser; polyvinyl alcohol (PVA); Mach-Zehnder interferometer (MZI); photonic crystal fibre (PCF); single-mode fibre (SMF); humidity sensor; compound clearance; optical fibre mechanical connection; RELATIVE-HUMIDITY; FILM;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A single-mode fibre (SMF)-compound clearance - photonic crystal fibre (PCF)-SMF humidity sensor is proposed. This sensor uses the composite gap composed of air cavity and fibre matching liquid as the beam splitter, and uses a broadband laser as the light source. This structure can effectively beam the core mode conducted in the core of single-mode fibre (SMF), so that it can evenly diffuse into PCF and has better repeatability than the fusion method. In the PCF transmission process of this structure, a relatively stable Mach-Zehnder interferometer (MZI) is formed, which realizes the sensing of relative humidity, and has a sensitivity of 330 pm/%RH in the range of 30 to 80 %RH. The sensor has the characteristics of high sensitivity, simple structure and low production cost, and has a good prospect in various application fields.
引用
收藏
页码：315 / 329
页数：15
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