Infrared Physics & Technology最新文献_第3页

Near-infrared photodetector based on single-walled carbon nanotubes/Al2O3/In0.53Ga0.47As hetero-structure enhanced by silver nanoparticles 纳米银增强单壁碳纳米管/Al2O3/In0.53Ga0.47As异质结构近红外探测器

IF 3.4 3区物理与天体物理

Infrared Physics & Technology Pub Date : 2025-09-13 DOI: 10.1016/j.infrared.2025.106153

Hao Gu, Zixiang Weng, Jun Chen

{"title":"Near-infrared photodetector based on single-walled carbon nanotubes/Al2O3/In0.53Ga0.47As hetero-structure enhanced by silver nanoparticles","authors":"Hao Gu, Zixiang Weng, Jun Chen","doi":"10.1016/j.infrared.2025.106153","DOIUrl":"10.1016/j.infrared.2025.106153","url":null,"abstract":"<div><div>As a kind of 1-D material, single-walled carbon nanotubes (SWCNTs) are extensively studied for application in near-infrared (NIR) photodetector due to their excellent infrared absorption, suitable bandgap and high charge carrier mobility. The combination of SWCNTs with bulk semiconductors has been demonstrated to exhibit a good photoelectric performance in the NIR region. This paper presents a NIR photodetector with silver nanoparticles (Ag NPs)/SWCNTs/Al<sub>2</sub>O<sub>3</sub>/In<sub>0.53</sub>Ga<sub>0.47</sub>As structure. The localized surface plasmon resonance (LSPR) caused by Ag NPs could enhance the light absorption of the photodetector. The Al<sub>2</sub>O<sub>3</sub> layer was inserted as the passivation layer in order to reduce the contact defects between SWCNTs and In<sub>0.53</sub>Ga<sub>0.47</sub>As. Under the 1064 nm incident light, the device exhibits a good optical response. The responsivity and detectivity are up to 244.1 mA/W and 1.49 × 10<sup>10</sup> Jones at −1V, respectively. In addition, the rise and fall time are 10 μs and 8 μs. Based on the excellent optoelectronic performance of the device, wireless optical communication in NIR region has been achieved. The results show the promising perspective and applications of the presented structure for NIR photodetection.</div></div>","PeriodicalId":13549,"journal":{"name":"Infrared Physics & Technology","volume":"151 ","pages":"Article 106153"},"PeriodicalIF":3.4,"publicationDate":"2025-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145095760","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of strain on the long-wave infrared emission characteristics of InAs/InxGa1−xAsySb1−y type-Ⅱ superlattices on different substrates 应变对不同衬底上InAs/InxGa1−xAsySb1−y型-Ⅱ超晶格长波红外发射特性的影响

IF 3.4 3区物理与天体物理

Infrared Physics & Technology Pub Date : 2025-09-13 DOI: 10.1016/j.infrared.2025.106134

Qingyue Meng , Yu Hao , Kai Guo , Xuan Fang , Yong Wang , Peng Du , Shijie Zhai , Dengkui Wang , Hao Yan , Jinhua Li , Xiaohua Wang

{"title":"Effect of strain on the long-wave infrared emission characteristics of InAs/InxGa1−xAsySb1−y type-Ⅱ superlattices on different substrates","authors":"Qingyue Meng , Yu Hao , Kai Guo , Xuan Fang , Yong Wang , Peng Du , Shijie Zhai , Dengkui Wang , Hao Yan , Jinhua Li , Xiaohua Wang","doi":"10.1016/j.infrared.2025.106134","DOIUrl":"10.1016/j.infrared.2025.106134","url":null,"abstract":"<div><div>Strain influences the optical properties of group III–V type-II superlattice (T2SL) materials. The performance of T2SL photodetectors containing InAs/GaSb is strongly affected by strain. Therefore, it is important to develop novel T2SL material systems and study the stress conditions between their epitaxial layers. Herein, the effect of strain on the long-wave infrared emission characteristics of InAs/In<sub>x</sub>Ga<sub>1−x</sub>As<sub>y</sub>Sb<sub>1−y</sub> T2SLs on InAs and GaSb substrates was investigated. Free, compressive, and tensile strains were adjusted by precisely controlling the alloy composition and thickness to realize zero, negative, and positive lattice mismatches, respectively, of T2SLs with InAs and GaSb substrates. The InAs/In<sub>x</sub>Ga<sub>1−x</sub>As<sub>y</sub>Sb<sub>1−y</sub> T2SLs were grown on InAs and GaSb substrates by molecular beam epitaxy and characterized by high-resolution X-ray diffraction, atomic force microscopy, Raman and photoluminescence (PL) measurements. The diffraction and microscopy results indicated that higher crystal quality and better surface morphology were obtained under free strain conditions with zero lattice mismatch on the same type of substrate. Higher crystal quality and better surface morphology were obtained on InAs than GaSb. Power-dependent PL spectra revealed that the luminescence characteristics of the T2SL are dominated by radiative recombination. Temperature-dependent PL spectra showed that the emission intensity of the T2SL on an InAs substrate is greater than that on GaSb. Compared with the T2SLs on GaSb substrates, those on InAs substrates retain strong PL emission intensity at higher temperature under the same strain conditions.</div></div>","PeriodicalId":13549,"journal":{"name":"Infrared Physics & Technology","volume":"151 ","pages":"Article 106134"},"PeriodicalIF":3.4,"publicationDate":"2025-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145095067","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A moxibustion robot positioning system based on human infrared thermography 一种基于人体红外热成像的艾灸机器人定位系统

IF 3.4 3区物理与天体物理

Infrared Physics & Technology Pub Date : 2025-09-13 DOI: 10.1016/j.infrared.2025.106154

Decheng Wu , Xingchen Liu , Rui Li , Hui Jiang , Xuzhao Peng , Wenzhuo Wang , Li Yang , Shiming Wu

{"title":"A moxibustion robot positioning system based on human infrared thermography","authors":"Decheng Wu , Xingchen Liu , Rui Li , Hui Jiang , Xuzhao Peng , Wenzhuo Wang , Li Yang , Shiming Wu","doi":"10.1016/j.infrared.2025.106154","DOIUrl":"10.1016/j.infrared.2025.106154","url":null,"abstract":"<div><div>Infrared thermography provides valuable auxiliary information that aids doctors in diagnosing and treating patients, and its effective integration with moxibustion therapy can enhance both the accuracy and efficiency of treatment. However, when moxibustion is administered based on infrared thermography information, the physician is required to relocate the patient for a second time. To address this issue, this paper proposes a moxibustion robot positioning system based on human infrared thermography. A moxibustion robot is designed to realize automated moxibustion operation based on the treatment plan of infrared thermography. A novel cross-modal image localization matching method for human infrared thermography and visible light images is also proposed, which uses a human keypoint detection algorithm and a spatial transformation algorithm to map the to-be-treated points on the infrared thermography of the patient to the visible light image of the patient, and Integrates with the moxibustion robot to realize automated moxibustion treatment. The system was validated and tested by constructing a human infrared thermography dataset. Three volunteers were participated in the repetitive localization experiment, and five acupoints on the back of each volunteer were selected as the points to be treated. The experimental results showed that the average error of localization of different acupoints for different individuals was 8.32 mm, which meets the demand of moxibustion treatment.</div></div>","PeriodicalId":13549,"journal":{"name":"Infrared Physics & Technology","volume":"151 ","pages":"Article 106154"},"PeriodicalIF":3.4,"publicationDate":"2025-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145095759","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Retentive Spatial–Spectral Transformer for hyperspectral image denoising 高光谱图像去噪的保留式空间-光谱变换

IF 3.4 3区物理与天体物理

Infrared Physics & Technology Pub Date : 2025-09-12 DOI: 10.1016/j.infrared.2025.106139

Haitao Yin, Hao Chen, Jian Zhu

{"title":"Retentive Spatial–Spectral Transformer for hyperspectral image denoising","authors":"Haitao Yin, Hao Chen, Jian Zhu","doi":"10.1016/j.infrared.2025.106139","DOIUrl":"10.1016/j.infrared.2025.106139","url":null,"abstract":"<div><div>Retention mechanism has emerged as a promising variant of Transformer and achieved remarkable success in natural language processing and computer vision. However, existing vision retention mechanism only explores spatial prior, suffering from limited representation for cubic spatial–spectral feature of hyperspectral image (HSI). To tackle this issue, we propose a Retentive Spatial–Spectral Transformer (RSST) for HSI denoising, which consists of the Retentive SpAtial Transformer (RSAT) block and the Retentive SpEctral Transformer (RSET) block. To enhance the adaptability of spatial–spectral representation, RSAT and RSET blocks integrate the spatial and spectral priors into the self-attention mechanism, which are formulated as a spatial decay matrix based on two-dimensional Manhattan distance and a spectral decay matrix based on one-dimensional bidirectional distance, respectively. To further improve the representation of 3D local spatial–spectral features, an Irregular Separable 3D Convolution (IrS3DC) module is integrated at the beginning of both the RSAT and RSET blocks. Additionally, RSST is configured as an asymmetric U-Net, in which the encoder and decoder blocks are implemented through the RSAT and RSET blocks, respectively. This asymmetric architecture can decouple spatial–spectral features, yielding high flexibility and low computational cost. Extensive experiments on various HSI datasets demonstrate that RSST outperforms state-of-the-art methods.</div></div>","PeriodicalId":13549,"journal":{"name":"Infrared Physics & Technology","volume":"151 ","pages":"Article 106139"},"PeriodicalIF":3.4,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145060437","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Wafer-scale nanowire array black silicon with excellent near-infrared absorption (>90.2 %) 具有优异近红外吸收（> 90.2%）的晶圆级纳米线阵列黑硅

IF 3.4 3区物理与天体物理

Infrared Physics & Technology Pub Date : 2025-09-12 DOI: 10.1016/j.infrared.2025.106140

Chuhao Yao , Xiaomeng Zhang , Dan Wang , Jielong Li

{"title":"Wafer-scale nanowire array black silicon with excellent near-infrared absorption (>90.2 %)","authors":"Chuhao Yao , Xiaomeng Zhang , Dan Wang , Jielong Li","doi":"10.1016/j.infrared.2025.106140","DOIUrl":"10.1016/j.infrared.2025.106140","url":null,"abstract":"<div><div>Black silicon (BS) with micro-nanotexturing exhibits outstanding optical properties, leading to broad applications in the optoelectronic field. However, due to limitations in silicon’s band gap and other material parameters, BS generally shows poor light absorption capabilities in the infrared range (>1100 nm). Here, we propose and fabricate a wafer-scale nanowire array BS with excellent near-infrared absorption. This structure is prepared by metal-assisted chemical etching (MACE) and randomly decorated with gold nanoparticles (Au-NPs) through a de-wetting process. Simulation results show that the maximum exciton generation rate (G<sub>max</sub>) of the fabricated structure reaches 3.3 × 10<sup>27</sup> s<sup>−1</sup>, demonstrating its high application potential in optoelectronic fields. Furthermore, the synergy effect between the Au-NPs induced localized surface plasmon resonance (LSPR) and the nanostructures achieved ultralow broadband (300–2000 nm) total reflectivity and transmittivity (below 3.8 % and 6 %, respectively), showcasing its exceptional absorption capability (1100–2000 nm, the theoretical value exceeds 90.2 %). Our proposed approach is not affected by the morphology of the silicon surface, enables the efficient and low-cost fabrication of tunable nanostructures on 4, 6 or 8-inch wafer-scales, making it highly valuable in fields such as optoelectronics, microelectronics, and photovoltaic conversion.</div></div>","PeriodicalId":13549,"journal":{"name":"Infrared Physics & Technology","volume":"151 ","pages":"Article 106140"},"PeriodicalIF":3.4,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145057090","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comment on “Narrow-band infrared radiation characteristics of rocket exhaust plume by using correction function related to thermodynamic state” 对“利用热力学态修正函数研究火箭排气羽流窄带红外辐射特性”一文的评析

IF 3.4 3区物理与天体物理

Infrared Physics & Technology Pub Date : 2025-09-12 DOI: 10.1016/j.infrared.2025.106092

Umut Kayikci, Furkan Gocer, Damla Akcaoglu, Kutay Kisadere, Mustafa Sivasligil

引用次数: 0

Stitched sinusoidal frequency-modulated coherent LiDAR for high-precision ranging sensing 用于高精度测距传感的缝正弦调频相干激光雷达

IF 3.4 3区物理与天体物理

Infrared Physics & Technology Pub Date : 2025-09-11 DOI: 10.1016/j.infrared.2025.106142

Hao Pan, Zeyang Chen, Fengqiang He, Mengying Lin

{"title":"Stitched sinusoidal frequency-modulated coherent LiDAR for high-precision ranging sensing","authors":"Hao Pan, Zeyang Chen, Fengqiang He, Mengying Lin","doi":"10.1016/j.infrared.2025.106142","DOIUrl":"10.1016/j.infrared.2025.106142","url":null,"abstract":"<div><div>Frequency-modulated continuous wave (FMCW) laser ranging technology has a wide range of applications in both science and industry. Traditional FMCW laser ranging mostly uses a strictly linear frequency-modulated tunable laser to achieve high-precision measurement. However, it is highly challenging to achieve that a tunable laser maintains a linear sweep with a large bandwidth for a long time. To address this challenge, this paper proposes an innovative stitched sinusoidal FMCW laser ranging system for high-precision ranging. The proposed system uses a sinusoidal signal that can easily maintain the waveform characteristics for stable frequency modulation and realizes high-precision range demodulation by a post-processing technique and coherent stitching by an in-phase quadrature (I/Q) modulation method. The results of the proof-of-concept experiments show that after coherently stitching the measurement signals with three-band sinusoidal modulation, the ranging precision and relative accuracy in a range of 4 m can be improved by 85 μm and 13 × 10<sup>-6</sup>, respectively, compared to a reference interferometer. The proposed system has the potential to significantly benefit real-time, high-precision three-dimensional imaging applications.</div></div>","PeriodicalId":13549,"journal":{"name":"Infrared Physics & Technology","volume":"151 ","pages":"Article 106142"},"PeriodicalIF":3.4,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145095066","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Far side defect detection in composite materials through threshold dynamics effect of local defect resonance frequency 基于局部缺陷共振频率阈值动力学效应的复合材料远侧缺陷检测

IF 3.4 3区物理与天体物理

Infrared Physics & Technology Pub Date : 2025-09-11 DOI: 10.1016/j.infrared.2025.106152

Manish Sharma, Tanmoy Bose

{"title":"Far side defect detection in composite materials through threshold dynamics effect of local defect resonance frequency","authors":"Manish Sharma, Tanmoy Bose","doi":"10.1016/j.infrared.2025.106152","DOIUrl":"10.1016/j.infrared.2025.106152","url":null,"abstract":"<div><div>Detection of deeper defects (depth more than mid layer thickness) are found to be challenging in local defect resonance (LDR) based non-destructive testing methods. In this paper, threshold dynamics in LDR is utilized for inspection of deeper defects in sweep vibro-thermography (SVT). First, CFRP composite samples are fabricated using vacuum assisted resin transfer moulding (VARTM) method. In first sample, a flat bottom hole (FBH) is created, and a barely visible impacts damage (BVID) is created in the second sample with an in-house developed portable impactor. The impacted CFRP sample is inspected using X-ray computed tomography (CT). Then, LDR based laser Doppler vibrometry (LDV) has been performed to understand the threshold dynamics in case of FBH. Thereafter, SVT has been used for inspection of BVID from the near and far (or, deeper) side. In both cases, a circular piezoelectric disc is used to vibrate the sample with desired resonance frequency range and voltages. The specimens are tested with six different voltage level. It has been found that temperature in the near side increases with an increase in input voltage to a certain voltage level. Thereafter, the temperature decreases with an increase in input voltage. In case of far or deeper side, the defect is found to be visible above that threshold voltage. Parametric resonance is found to be responsible for this observation which drains the energy from the fundamental LDR frequency to higher and fractional harmonics. Threshold dynamics effect is utilised to visualise far side defect in composite sample.</div></div>","PeriodicalId":13549,"journal":{"name":"Infrared Physics & Technology","volume":"151 ","pages":"Article 106152"},"PeriodicalIF":3.4,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145060569","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Improved QEPAS sensor based on quartz tuning fork shell enhancement 基于石英音叉壳增强的改进QEPAS传感器

IF 3.4 3区物理与天体物理

Infrared Physics & Technology Pub Date : 2025-09-11 DOI: 10.1016/j.infrared.2025.106147

Qiannan Cai, Ting Fang, Shufeng Yong, Dingli Xu, Gang Zhang, Qiang Ge, Linguang Xu

{"title":"Improved QEPAS sensor based on quartz tuning fork shell enhancement","authors":"Qiannan Cai, Ting Fang, Shufeng Yong, Dingli Xu, Gang Zhang, Qiang Ge, Linguang Xu","doi":"10.1016/j.infrared.2025.106147","DOIUrl":"10.1016/j.infrared.2025.106147","url":null,"abstract":"<div><div>This paper presents a novel metal shell–enhanced quartz tuning fork (QTF) detector for low-cost, high-sensitivity photoacoustic gas sensing. A dual-resonance quartz-enhanced photoacoustic spectroscopy (QEPAS) technique is developed by integrating a micro-resonator tube with this modified QTF structure. To validate the approach, a compact gas detection system was implemented, utilizing the proposed QTF detector combined with wavelength modulation spectroscopy (WMS). This system demonstrates enhanced detection sensitivity and superior stability compared to conventional QEPAS configurations. Preliminary performance verification with water vapor (H<sub>2</sub>O) as the target analyte revealed that the metal shell-enhanced structure increased the second-harmonic signal amplitude by a factor of 4.6 compared with the bare QTF. Furthermore, the dual-resonance configuration achieves an approximately 10-fold signal enhancement. At standard atmospheric pressure, the system attains a normalized noise-equivalent absorption coefficient (NNEA) of 1.79 × 10<sup>−9</sup> cm<sup>−1</sup>·W<sup>−1</sup>·Hz<sup>−1/2</sup>, demonstrating high sensitivity and feasibility for trace gas detection. In addition, methane was employed as an additional test gas to further evaluate the stability of the system. The experimental results demonstrated that the dual-resonance QEPAS sensor exhibited an excellent linear response to CH<sub>4</sub> concentration variations (R<sup>2</sup> = 0.999). According to the Allan–Werle deviation analysis, the detection limit was determined to be 43.43 ppm at an integration time of 1 s. It could be further reduced to 9.36 ppm at the optimal integration time of 45 s.</div></div>","PeriodicalId":13549,"journal":{"name":"Infrared Physics & Technology","volume":"151 ","pages":"Article 106147"},"PeriodicalIF":3.4,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145044185","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Improving the measurement accuracy of distributed RH sensor by using adaptive 2D bilateral processing method 采用自适应二维双边处理方法提高分布式RH传感器的测量精度

IF 3.4 3区物理与天体物理

Infrared Physics & Technology Pub Date : 2025-09-11 DOI: 10.1016/j.infrared.2025.106107

Shuo Bai , Liyuan Jiang , Qihao Zhang , Sihan Ding , Chen Guan , Xibao Gao , Shuai Qu , Wenjie Jiang , Jiasheng Ni

{"title":"Improving the measurement accuracy of distributed RH sensor by using adaptive 2D bilateral processing method","authors":"Shuo Bai , Liyuan Jiang , Qihao Zhang , Sihan Ding , Chen Guan , Xibao Gao , Shuai Qu , Wenjie Jiang , Jiasheng Ni","doi":"10.1016/j.infrared.2025.106107","DOIUrl":"10.1016/j.infrared.2025.106107","url":null,"abstract":"<div><div>The measurement accuracy of the distributed relative humidity (RH) sensor based on optical frequency domain reflectometry (OFDR) is constrained by the number of data points involved in the cross-correlation calculation. Reducing the number of data points to achieve high spatial resolution measurements can significantly compromise the accuracy of the results. This effect is especially evident in the presence of small strains, such as those induced by humidity variations. To overcome this problem, this study proposes and experimentally demonstrates a distributed RH sensor with high accuracy by using polyimide-overlaid fiber and image processing technology. Cross-correlation data arrays are generated by processing the collected distributed Rayleigh scattering signals along the sensing fiber, allowing the construction of a two-dimensional (2D) image that captures spectrum shifts due to humidity-induced strain (HIS). Thus, the adaptive 2D bilateral processing method is introduced to realize distributed RH measurement with high spatial resolution. Experimental results show that the abnormal information can be removed and the real information can be extracted by the proposed method. The relative humidity gradient information can be reconstructed free of outliers under spatial resolution of 4 mm with a wavelength sweeping range of 20 nm over a 48-meter test fiber. Additionally, the peak-to-peak measurement errors from the proposed technique are half of those from traditional processing methods and more precise humidity-induced strain information can be reflected. This straightforward sensing technique paves the way for the development of cost-effective, reliable and practical distributed humidity sensing systems.</div></div>","PeriodicalId":13549,"journal":{"name":"Infrared Physics & Technology","volume":"151 ","pages":"Article 106107"},"PeriodicalIF":3.4,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145044187","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0