OPTICAL FIBER TECHNOLOGY
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2021
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IF 2.53
Changgui Yu,Huaping Gong,Zhaoxu Zhang,Kai Ni,Chunliu Zhao
In this paper, a relative humidity (RH) sensor based on vernier effect of two parallel Fabry-Perot interferometers is proposed and experimentally demonstrated. The polyvinyl alcohol (PVA) is chosen as the humidity sensitive material. The sensor consists of a reference cavity formed by single mode fiber – fiber capillary - single mode fiber (SMF-FC-SMF) structure and a sensing cavity formed by SMF-FC-coated structure. The sensor shows the high sensitivity of 1.78 nm/%RH in the range of 55%RH-85%RH. We measured the stability of the sensor at 45%RH and 75%RH, and the response time between 55%RH and 75%RH is 12 s. In addition, it also has the advantages of low temperature disturbance, simple principle, and easy manufacture.
研究领域:
光学传感
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材料科学
✓ 已验证
DOI
高影响因子
SENSORS
·
2022
·Vol. 22
·期 13
·4816
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IF 3.847
Cheng Zhou,Yanjun Song,Qian Zhou,Jiajun Tian,Yong Yao
In this study, an ultra-high-sensitivity fiber humidity sensor with a chitosan film cascaded Fabry–Perot interferometer (FPI) based on the harmonic Vernier effect (HVE) is proposed and demonstrated. The proposed sensor can break the limitation of the strict optical path length matching condition in a traditional Vernier effect (TVE) FPI to achieve ultra-high sensitivity through the adjustment of the harmonic order of the HVE FPI. The intersection of the internal envelope tracking method allows spectra demodulation to no longer be limited by the size of the FSR of the FPI. The sensitivity of the proposed sensor is −83.77 nm/%RH, with a magnification of −53.98 times. This work acts as an excellent guide in the fiber sensing field for the further achievement of ultra-high sensitivity.Keywords:Fabry–Perot interferometer;chitosan film sensor;optical fiber humidity sensor;harmonic Vernier effect
研究领域:
光学
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传感技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2022
·
IF 9.221
Xingshun Wu,Feng Gao,Fei Jin,D.N. Wang,Ying Wang,Qi Chen,Hua Yang,Huaping Gong,Zhaokun Wang,Chunliu Zhao,Huan Liu
This study proposed a high sensitivity optical fiber relative humidity sensor (OFHS). Besides, a fullerene derivative, C 60 -THAM, was synthesized and firstly reported as a molecule receptor in the OFHS. Compared with the widely researched carbon-based materials in OFHS, the C 60 -THAM film has abundant amino dangling bonds , hence emerges naturally as excellent receptors for water molecules. Besides, a cascaded Fabry-Perot interferometer (FPI) was fabricated in the core of single-mode fiber (SMF) without surface damage by femtosecond laser . In the OFHS, the relative humidity (RH) was measured by the Vernier effect. The working principle of the OFHS was analyzed through calculation and simulation. In the experiment, C 60 -THAM was coated on the plant fiber end. The sensitivity of the sensor is about 0.42 nm/RH as the relative humidity change from 30 % to 65 % while the optical-matter reaction length is only about 150 nm. Moreover, the sensor exhibited a stable performance as the RH was decreasing from 65 % to 30 %. The OFHS in this work is fast response and the response time for the rising and decay process was about 2.2 s and 3.2 s respectively.
研究领域:
光学传感
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
OPTICAL FIBER TECHNOLOGY
·
2023
·
IF 2.7
Yiting Liu,Huaping Gong,Xiao Lu,Kai Ni,Chunliu Zhao,Changyu Shen
An optical fiber humidity sensor based on vernier effect of Fabry-Perot(F-P) interferometers constructed by microsphere and polyvinyl alcohol (PVA) film is proposed. A hollow capillary fiber (HCF) is spliced with the single-mode fiber (SMF), and the barium titanate ball is inserted into the HCF. A layer of PVA film is coated on the end face of the HCF to construct multiple F-P cavities, and two F-P cavities act as the reference cavity and sensing cavity. The lengths of the two cavities are relatively close to form the vernier effect. The experimental results show that the humidity sensitivity of the sensor is 0.316 nm/%RH in the range of 35 %RH-85 %RH. The fluctuation of the sensor in 60 min is less than 0.27 %RH. And the response time of the sensor is about 12 s. The sensor has the merits of high sensitivity, compact size and good stability.
研究领域:
光学传感
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
MEASUREMENT
·
2024
·
IF 5.2
Haiming Qiu,Mengxuan Zhu,Shuji Mo,Ying Gao,Yong Yao,Yongkang Dong,Jiajun Tian
A low-temperature-crosstalk fiber-optic humidity sensor based on a thermal expansion-resistant Fabry-Pérot interferometer (FPI) has been proposed. This sensor is constructed by cascading a single-mode fiber, a hollow core fiber, an air-clad photonic crystal fiber (APCF), and a polyimide microrod. The two mirrors of FPI are composed of the end faces of single-mode optical fiber and polyimide microrod (located on the end face of APCF). Thus, hollow core fiber thermal expansion will offset the change in FPI length caused by polyimide microrod thermal expansion, thereby achieving low temperature sensitivity. In contrast, an increase in humidity causes the polyimide microrod to absorb moisture and swell, resulting in a shortening of the FPI. Experimentally, the sensor’s humidity sensitivity between 30 % RH and 80 % RH and temperature sensitivity between 20 °C and 200 °C are 203.1 pm/% RH and 0.95 pm/°C, respectively. With a temperature cross-sensitivity as low as 0.0047 % RH/°C. This article provided a novel solution for achieving low temperature cross sensitivity in humidity sensors.
研究领域:
光学工程
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材料科学
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传感技术
✓ 已验证
产品关联
DOI
高影响因子
OPTICAL ENGINEERING
·
2019
·
IF 1.209
Jianjun Zhou,Jixiang Dai,Shiwen Yang,Yong Wang,Minghong Yang
A fiber-optic carbon monoxide (CO)-sensing system with high sensitivity was proposed by combining Fabry–Perot interferometer (FPI) sensor with sensing material Au/ZnO. The sensitivity is 814 pm / % within the CO concentration range of 0% to 4%. The FPI sensor was fabricated by inserting single-mode fiber into a partially polymer-filled glass capillary to form an air cavity; the length of the air cavity is 76.83 μm. The temperature sensitivity of the FPI is −2.7 nm / ° C, which provides better conditions for measurement of CO. The catalyst Au/ZnO was prepared by coprecipitation, which could catalyze the oxidation of CO at ambient temperature and humidity. X-ray diffraction and scanning electron microscope analysis were employed to reveal the crystalline structure and morphology of the catalyst. To eliminate the influence of ambient temperature change on the accuracy of the concentration test, a fiber Bragg grating with central wavelength of 1550.24 nm was introduced in the experimental setup for the temperature compensation.
研究领域:
光学工程
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材料科学
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环境监测
✓ 已验证
DOI
高影响因子
OPTICAL FIBER TECHNOLOGY
·
2023
·
IF 2.7
Xiao Lu,Huaping Gong,Ye Lu,Yiting Liu,Changyu Shen,Chunliu Zhao
A relative humidity (RH) sensor based on optical fiber Fabry-Perot interferometer (FPI) with open cavity is proposed and demonstrated, which is manufactured by cutting the fiber capillary (FC) with inclined end and splicing it with the flat end of another FC by overlapping method. Polyvinyl alcohol (PVA) film is coated on the flat end of one FC. The proposed sensor is tested under the conditions of 180 μm cavity length, 45 μm hole size and 15 μm film thickness. The results show that the sensitivity is about 0.70 nm/%RH within the range of 35 %RH ∼ 85 %RH. The proposed sensor has the merits of high sensitivity, fast response time, and high stability.
研究领域:
光学传感
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
OPTICAL FIBER TECHNOLOGY
·
2025
·
IF 2.7
Ling Chen,Ruike Liu,Xianfeng Liu,Zhaoyang Li,Guohao Li
A highly economical fiber immunosensor with the harmonic Vernier effect (HVE) is reported for cancer antigen 125 (CA125) tumor marker detection. The sensor architecture is constructed using a special fiber fusion splicer to cascade three sections of single-mode fiber (SMF) in sequence with a large offset. This configuration yields a cascaded Fabry-Perot interferometer (FPI) architecture incorporating the HVE. The misalignment fusion design facilitates direct and seamless interaction between biochemical fluids and optical signals. Experimental results demonstrate that the refractive index sensitivities of the internal envelope and upper envelope reach −5236, and 1163 nm/RIU, respectively, when refractive index increases from 1.334 to 1.339. It has excellent consistency with the simulation results of −5375 nm/RIU and 1257 nm/RIU as refractive index increases from 1.334 to 1.335. Obviously, the refractive index sensitivity is significantly enhanced via the HVE. The designed sensor is further biologically modified with the 50 μg/mL ovarian cancer 125 monoclonal antibody, enabling varying cancer antigen 125 concentrations detection. The proposed biosensor has low detection limit with value of 44.12 fg/mL and a fast response time (<30 min). Therefore, the proposed biosensor has latent application as an ideal platform for disease diagnosis and medical detection.
研究领域:
生物传感器
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生物光子学
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癌症诊断
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光学传感
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光纤技术
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生物医学工程
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免疫传感器
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）