Optics Communications最新文献_第3页

Multi-function integrated optic chip for miniaturized resonant fiber optic gyroscope

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-03-19 DOI: 10.1016/j.optcom.2025.131774

Heliang Shen, Lei Zhang, Minghan Li, Fei Huang, Xuan She, Kan Chen, Ran Bi, Lei Wang, Xiaowu Shu

引用次数: 0

Active control of polarization state in terahertz metalens

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-03-19 DOI: 10.1016/j.optcom.2025.131775

Hongchuan He , Yiqian Zhang , Yangkai Wang , Hao Cheng , Zheng Liu , Guangbin Dai , Chengyue Wang , Qiuping Huang , Yalin Lu

{"title":"Active control of polarization state in terahertz metalens","authors":"Hongchuan He , Yiqian Zhang , Yangkai Wang , Hao Cheng , Zheng Liu , Guangbin Dai , Chengyue Wang , Qiuping Huang , Yalin Lu","doi":"10.1016/j.optcom.2025.131775","DOIUrl":"10.1016/j.optcom.2025.131775","url":null,"abstract":"<div><div>Metalens shows unprecendented capability in manipulating the propagation of electromagnetic wave, and has much more potential in light focusing, imaging, etc. than the conventional bulky lens. However, since the light refraction of metalens is caused by the phase discontinuity over the spatial phase responses, numerous efforts should be devoted into the design of every metastructure to meet the phase demand, which makes it challenging to achieve tunable metalenses. Here, we propose several terahertz (THz) metalenses with polarization states continuously tunable at their focal points as the external optical pump varies. Every metastructure of these metalenses contains two hybrid circular split ring resonators (CSRRs) composed of Si and Au, respectively. It is shown that the electromagnetic response of the hybrid CSRRs can be split into two orthogonal Pancharatnam-Berry phase modes, which are controlled by the rotation angles of Si and Au-CSRRs. Under this theory, THz metalenses with single or multiple reconfigurable linear polarized (LP) focal points are designed and simulated. By varying the Si conductivity, the polarization angle of LP THz wave at the focal point can continuously rotate from the initial angle to the designed one. Our design of metalens paves a new way for tunable metasurfaces.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"583 ","pages":"Article 131775"},"PeriodicalIF":2.2,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143682144","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

Proposing an ultra-low loss sodium-based triangular hybrid plasmonic waveguide

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-03-19 DOI: 10.1016/j.optcom.2025.131777

Hamed Firouzbakht, Amir Saman Nooramin

{"title":"Proposing an ultra-low loss sodium-based triangular hybrid plasmonic waveguide","authors":"Hamed Firouzbakht, Amir Saman Nooramin","doi":"10.1016/j.optcom.2025.131777","DOIUrl":"10.1016/j.optcom.2025.131777","url":null,"abstract":"<div><div>Highly confined and long-range deep subwavelength optical propagation is crucial for photonic integration. Surface plasmon polaritons provide a scientific method for high-density photonic integration and low-loss optical field transmission. In this research, we introduce a triangular hybrid plasmonic waveguide in which a triangular nanowire is separated by a layer of <span><math><mrow><msub><mrow><mi>S</mi><mi>i</mi><mi>O</mi></mrow><mn>2</mn></msub></mrow></math></span> from a (<span><math><mrow><mi>N</mi><mi>a</mi></mrow></math></span>) substrate and fixed with columns of <span><math><mrow><msub><mrow><mi>S</mi><mi>i</mi><mi>O</mi></mrow><mn>2</mn></msub></mrow></math></span>. The properties of the propagation modes have been analyzed using the finite element method at the <span><math><mrow><mn>1550</mn><mi>n</mi><mi>m</mi></mrow></math></span> wavelength. The results show that we have normalized mode area = <span><math><mrow><mn>1.6</mn><mo>×</mo><msup><mn>10</mn><mrow><mo>−</mo><mn>3</mn></mrow></msup></mrow></math></span>, effective index = <span><math><mrow><mn>1.1344</mn></mrow></math></span>, propagation length = <span><math><mrow><mn>660</mn><mspace></mspace><mi>μ</mi><mi>m</mi></mrow></math></span>, and figure of merit = <span><math><mrow><mn>5410</mn></mrow></math></span> simultaneously. Because of the field concentration at the tip of the triangle, a lower loss, higher confinement, and longer propagation length have been attained. In addition, the fabricating method of the proposed waveguide has been proposed and discussed. These findings of the triangular hybrid plasmonic waveguides make them widely used in many fields, including telecommunications, sensors, lasers, and optical technologies.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"583 ","pages":"Article 131777"},"PeriodicalIF":2.2,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143697782","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

Multi-tone meaningful visual cryptography scheme based on optical axis angle superposition

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-03-19 DOI: 10.1016/j.optcom.2025.131711

Guang-Hui Cui , Bin Yan , Jeng-Shyang Pan , Hong-Mei Yang

{"title":"Multi-tone meaningful visual cryptography scheme based on optical axis angle superposition","authors":"Guang-Hui Cui , Bin Yan , Jeng-Shyang Pan , Hong-Mei Yang","doi":"10.1016/j.optcom.2025.131711","DOIUrl":"10.1016/j.optcom.2025.131711","url":null,"abstract":"<div><div>The visual cryptography scheme based on polarization uses the polarization state of light to encrypt images, ensuring that the share images have no pixel expansion and that the secret image can be reconstructed without loss of quality. However, its shares are meaningless noise images. To solve this problem, a multi-tone meaningful visual cryptography scheme based on optical axis angle superposition (OAAS-MVC) is proposed. In our scheme, both secret images and cover images are multi-tone images. In the encoding phase, the image’s pixel is converted into the optical axis angles of the retarder film component (RFC). By adjusting the angles of the <span><math><mi>n</mi></math></span> <span><math><mi>λ</mi></math></span>/2 RFCs to specific angles, they can represent the pixel of the cover image. The share images are generated as meaningful images with the appearance of cover images. In the decoding phase, the angles of the <span><math><mi>n</mi></math></span> <span><math><mi>λ</mi></math></span>/2 RFCs are superimposed to reconstruct the secret image. Compared to other classic meaningful visual cryptography schemes, our scheme significantly improves the quality of the shares and the reconstructed secret image. The experimental results demonstrated the effectiveness and security of the scheme.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"583 ","pages":"Article 131711"},"PeriodicalIF":2.2,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143682151","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

Indoor visible light fingerprint positioning based on dynamic weighted RSSI and LGSHHO-LSSVM

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-03-19 DOI: 10.1016/j.optcom.2025.131778

Lieping Zhang , Yao Chen , Xiaolin Gao , Jiazhi Yang , Cui Zhang

{"title":"Indoor visible light fingerprint positioning based on dynamic weighted RSSI and LGSHHO-LSSVM","authors":"Lieping Zhang , Yao Chen , Xiaolin Gao , Jiazhi Yang , Cui Zhang","doi":"10.1016/j.optcom.2025.131778","DOIUrl":"10.1016/j.optcom.2025.131778","url":null,"abstract":"<div><div>To address the issues of poor stability and low positioning accuracy in traditional indoor visible light fingerprint positioning methods based on received signal strength indicator (RSSI), this paper proposes an indoor visible light positioning method based on dynamically weighted RSSI signals and an improved harris hawk optimization (HHO) algorithm for least squares support vector machine (LSSVM) (abbreviation DW + LGSHHO-LSSVM algorithm). First, a dynamic weighting algorithm is introduced to process the RSSI signals, considering both the geometric distance between the receiver and the light source as well as the signal fluctuation, dynamically adjusting the weights to reduce noise interference and enhance the positioning features of the signal. Second, the logistic chaotic map is employed to improve population diversity, and a golden sine strategy is used to enhance the search efficiency of the HHO algorithm, thereby improving the global search ability and convergence accuracy of the algorithm. Finally, the improved HHO algorithm is used to optimize the key parameters of the LSSVM model, establishing a high-accuracy indoor positioning prediction model. Experimental results show that, in a 3 m × 4 m × 3 m test environment, the average positioning error of the DW + LGSHHO-LSSVM algorithm is 4.7 cm, with errors mainly concentrated in the range of 0.05–0.1 m. Compared to the LSSVM, HHO-LSSVM, DW + HHO-LSSVM, LGSHHO-LSSVM and MPA-LSSVM algorithms, the positioning accuracy is improved by 53.92 %, 48.35 %, 27.69 %, 38.96 % and 51.55 %, respectively. These results demonstrate the significant advantages of the proposed method in terms of positioning accuracy and stability.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"583 ","pages":"Article 131778"},"PeriodicalIF":2.2,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143724925","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

Automating interferometric focal length measurement techniques with varifocal optics

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-03-19 DOI: 10.1016/j.optcom.2025.131703

Arjent Imeri , Syed Azer Reza

{"title":"Automating interferometric focal length measurement techniques with varifocal optics","authors":"Arjent Imeri , Syed Azer Reza","doi":"10.1016/j.optcom.2025.131703","DOIUrl":"10.1016/j.optcom.2025.131703","url":null,"abstract":"<div><div>Characterizing the focal length of a sample lens is one of the most fundamental and ubiquitous of measurements in optical metrology. In this paper, we eliminate bulk mechanical motion of optical components in various popular interferometric shop testing methods for sample focal length measurement. While most existing interferometric focal length measurement techniques require precise positioning and repositioning of bulk optical components according to the sample lens focal length, we show that repeatable and reliable focal length measurements are possible without a need of bulk motion of optical elements. We demonstrate that elimination of bulk mechanical motion is achieved via the introduction of varifocal optics such as focus tunable optic lenses in measurement testbeds. This improves the repeatability and compactness of these methods. Interferometric techniques which we automate are ones that use a standard double frequency grating and a Ronchi ruling. Moreover, we also upgrade a traditional Twyman–Green (TG) interferometer to an actively tunable version which can characterize focal length without requiring bulk motion of optical components. The presented techniques are validated with results from carefully designed experiments.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"583 ","pages":"Article 131703"},"PeriodicalIF":2.2,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143681627","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

Polarization-dependent resonance tunneling effect with epsilon-near-zero ultra-thin layer

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-03-19 DOI: 10.1016/j.optcom.2025.131739

Yuliang Zhi , Yangyang Dai , Gang Lu , Gaige Zheng

{"title":"Polarization-dependent resonance tunneling effect with epsilon-near-zero ultra-thin layer","authors":"Yuliang Zhi , Yangyang Dai , Gang Lu , Gaige Zheng","doi":"10.1016/j.optcom.2025.131739","DOIUrl":"10.1016/j.optcom.2025.131739","url":null,"abstract":"<div><div>We present a theoretical and computational study of resonant optical tunneling (ROT) through an epsilon-near-zero (ENZ) ultra-thin layer, highlighting its potential for designing highly efficient optical devices in the mid-infrared (mid-IR) regime. By leveraging the unique properties of ENZ materials, we demonstrate the realization of a band-pass filter (BPF) with selective transmission characteristics for both transverse electric (TE) and transverse magnetic (TM) polarizations. By optimizing the multilayer design and prism geometry, we demonstrate the realization of a highly efficient BPF with broadband transmission and out-of-band suppression. The ENZ layer enables strong coupling and interference effects, giving rise to asymmetric Fano line shapes in the transmission spectrum. Our analysis reveals that this mechanism achieves high efficiency and polarization sensitivity, making it suitable for mid-IR optical systems requiring compact, high-performance polarizers and filters. Such ENZ-based designs open avenues for advanced applications in sensing, spectroscopy, and infrared photonics.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"583 ","pages":"Article 131739"},"PeriodicalIF":2.2,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143682156","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 reconfigurable optical-assisted time-interleaved ADC based on optical delay chip

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-03-18 DOI: 10.1016/j.optcom.2025.131766

Bingchen Pan, Shilie Zheng, Yijie Ye, Xuan Liu, Xiaonan Hui, Xianmin Zhang

引用次数: 0

Polarized light navigation in cloudy conditions using deep learning

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-03-18 DOI: 10.1016/j.optcom.2025.131767

Xiaohui Dong, Yuan Li, Zhuo Liu, Fangchen Dong

{"title":"Polarized light navigation in cloudy conditions using deep learning","authors":"Xiaohui Dong, Yuan Li, Zhuo Liu, Fangchen Dong","doi":"10.1016/j.optcom.2025.131767","DOIUrl":"10.1016/j.optcom.2025.131767","url":null,"abstract":"<div><div>Polarized light navigation is a popular technique for practical navigation using polarized images of the sky. However, the interference with polarization information in cloudy weather can severely compromise the accuracy of polarization-based orientation. In order to solve this problem, a method based on the improved Unet deep learning model combined with threshold segmentation for cloud segmentation and restoration of the original sky image is proposed to achieve high-precision polarization navigation and orientation in a cloudy occlusion environment. The Dynamic Snake Convolution (DSC) which can dynamically adjust the convolution kernel, is employed in place of standard convolution in the Unet decoder. The Multi-scale Cross-axis Attention (MCA) is added in the skip connection part to strengthen the feature representation. The accuracy of the improved model can be increased to 91.94 %. The binary segmentation map predicted by the improved model is combined with the binary map of threshold segmentation to perform cloud restoration on the original sky image, and finally the restored sky image is used to solve the heading angle. Experimental results indicate that this approach effectively identifies occluded regions under cloud cover while also can improve the accuracy of the polarimetric navigation method. The root-mean-square error of the heading angle is reduced from 4.0437° to 0.8498° after de-clouding, and the navigation accuracy is improved by about 78.98 %.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"583 ","pages":"Article 131767"},"PeriodicalIF":2.2,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143682149","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

Fast localization and single-pixel imaging of the moving object using time-division multiplexing

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-03-18 DOI: 10.1016/j.optcom.2025.131771

Zijun Guo , Wenwen Meng , Dongfeng Shi , Linbin Zha , Wei Yang , Jian Huang , Yafeng Chen , Yingjian Wang

{"title":"Fast localization and single-pixel imaging of the moving object using time-division multiplexing","authors":"Zijun Guo , Wenwen Meng , Dongfeng Shi , Linbin Zha , Wei Yang , Jian Huang , Yafeng Chen , Yingjian Wang","doi":"10.1016/j.optcom.2025.131771","DOIUrl":"10.1016/j.optcom.2025.131771","url":null,"abstract":"<div><div>When imaging moving objects, single-pixel imaging often suffers from motion blur. This paper presents a novel method for simultaneous high-speed localization and anti-motion blur imaging of fast-moving objects based on single-pixel imaging. The proposed approach leverages geometric moment patterns and Hadamard patterns alternately, encoding the object's positional and image information through time-division multiplexing. During the reconstruction process, the object's position is first extracted, followed by obtaining the image using a motion-compensated single-pixel reconstruction method. As a result, the method achieves both high-frame-rate localization and motion-blur-free imaging. Experimental results demonstrate that for an object moving at an angular velocity of up to 0.5 rad/s relative to the imaging system, the proposed method achieves a localization frequency of 5.55 kHz and progressively reconstructs a motion-blur-free image with a higher signal-to-noise ratio. This approach holds promising potential for applications in single-pixel imaging of fast-moving objects.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"583 ","pages":"Article 131771"},"PeriodicalIF":2.2,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143682154","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