共振干涉并发光纤传感器：可同时检测温度和湿度

IF 8 1区化学 Q1 CHEMISTRY, ANALYTICAL

Sensors and Actuators B: Chemical Pub Date : 2025-04-28 DOI:10.1016/j.snb.2025.137888

Mingyue Wang, Yutong Sun, Hongkun Zheng, Ya-nan Zhang

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引用次数: 0

摘要

本文提出了一种创新的光纤传感器，可以同时测量相对湿度和温度。该传感器主要包括一个共振工作的聚乙烯醇（PVA）微瓶谐振器（MBR）和一个通过干扰工作的硅耦合器。这两个元件分别采用简单自组装和电弧熔接的方法制造，然后耦合成一个集成传感器。耦合器具有双重作用，既可以作为利用二氧化硅热响应的温度传感器，又可以作为激发MBR中循环共振的耦合组件。同时，PVA在不同温度和相对湿度的刺激下表现出不同的收缩和膨胀行为，从而触发MBR的折射率和半径演化，从而调制共振倾角偏移。对于RH测量（32-84% RH），共振倾角的平均灵敏度为103.34 pm/%RH。对于温度测量（24 ~ 60℃），共振倾角的平均灵敏度为-22.41 pm/℃，干扰倾角的平均灵敏度为-29.35 pm/℃。并对其重复性、动态响应性、可逆性、稳定性进行了综合表征。优越的综合性能使传感器有利于在复杂和具有挑战性的环境中同时进行RH和温度测量。

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Resonance-interference concurrent fiber sensor: Enabling simultaneous detection of temperature and humidity

This paper presents an innovative fiber sensor that enables concurrent measurement of relative humidity (RH) and temperature. The sensor predominantly comprises a polyvinyl alcohol (PVA) microbottle resonator (MBR) operating on resonance and a silica coupler functioning via interference. The two components are fabricated by simple self-assembly and arc fusion respectively, and then coupled into an integrated sensor. The coupler serves a dual role as both a temperature sensor that capitalizes on the thermal response of silica and a coupling component that excites the resonance circulated in the MBR. Meanwhile, PVA exhibits variable shrinkage and expansion behaviors subjected to the stimulation of diverse temperatures and RH, which triggers the refractive index and radius evolution of MBR, thereby modulating the resonance dip shift. For RH measurement (32-84% RH), the resonance dip exhibits an average sensitivity of 103.34 pm/%RH. For temperature measurement (24-60℃), the average sensitivity of the resonance dip is -22.41 pm/℃ and that of the interference dip is -29.35 pm/℃. In addition, comprehensive characterizations were carried out on its repeatability, dynamic response, reversibility, and stability. The superior comprehensive behavior positions the sensor favorably for simultaneous RH and temperature measurement in intricate and challenging environments.

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来源期刊

Sensors and Actuators B: Chemical 工程技术-电化学

CiteScore

14.60

自引率

11.90%

发文量

1776

审稿时长

3.2 months

期刊介绍： Sensors & Actuators, B: Chemical is an international journal focused on the research and development of chemical transducers. It covers chemical sensors and biosensors, chemical actuators, and analytical microsystems. The journal is interdisciplinary, aiming to publish original works showcasing substantial advancements beyond the current state of the art in these fields, with practical applicability to solving meaningful analytical problems. Review articles are accepted by invitation from an Editor of the journal.