Optics Communications最新文献_第9页

A speckle enhanced prism spectrometer based on planar lightwave circuit chip

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-03-07 DOI: 10.1016/j.optcom.2025.131715

Mingqian Zhou, Haole Kong, Zhiming Zhang, Yanghui Li, Juan Kang, Lu Yin, Yi Li, Le Wang

{"title":"A speckle enhanced prism spectrometer based on planar lightwave circuit chip","authors":"Mingqian Zhou, Haole Kong, Zhiming Zhang, Yanghui Li, Juan Kang, Lu Yin, Yi Li, Le Wang","doi":"10.1016/j.optcom.2025.131715","DOIUrl":"10.1016/j.optcom.2025.131715","url":null,"abstract":"<div><div>We present a new spectrometer design which combines a conventional prism spectrometer with planar lightwave circuits (PLC) in this study. The PLC chip was integrated in front of the prism as a scattering medium to improve the spectral resolution. Interferences among different modes in the multimode waveguide create wavelength-dependent speckle patterns. Since the speckle patterns corresponding to different wavelengths are deterministic and unique, they can be utilized for wavelength identification after calibration. In addition, the spectral-spatial mapping through the prism further enhances the contrast of speckles, thereby improving the resolution and bandwidth. Compared with conventional prism spectrometers, the speckle-enhanced prism spectrometer incorporates both a scattering medium and a prism, enabling simultaneous high resolution and wide bandwidth. Moreover, the narrow output of the PLC can replace the slit in conventional spectrometers, further improving the optical efficiency to 40%. In demonstration experiments, the proposed spectrometer successfully measured multiple laser wavelengths and a broad band light source. The resolution of up to 5 pm over the wavelength range of 1525–1565 nm was achieved. This study paves the way for the development of high-resolution spectrometers with smaller volumes and higher optical efficiency.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"583 ","pages":"Article 131715"},"PeriodicalIF":2.2,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143580718","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

Fluoride fibres amplifiers

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-03-07 DOI: 10.1016/j.optcom.2025.131731

Changhui Liu, Changjun Xu, Juan Wang, Zhe Huang, Shunbin Wang, Pengfei Wang

引用次数: 0

Analog and photon counting signal gluing for atmospheric lidar in cloudy weather

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-03-07 DOI: 10.1016/j.optcom.2025.131729

Junshuai Liu , Pan Guo , Wangshu Tan , Siying Chen , He Chen , Haokai Yang , Yinghong Yu , Jia Gong , Mengrui He , Zhichao Bu

引用次数: 0

Comparison of different phase retrieval algorithms based on ENZ theory

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-03-07 DOI: 10.1016/j.optcom.2025.131735

Shuxin Ma, Chonglei Zhang

引用次数: 0

Scattering wavefront shaping guided by mask based on third-order correlation of light fields

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-03-07 DOI: 10.1016/j.optcom.2025.131716

Ying Zhao , Xiaodan Fan , Meigang Duan , Yao Ju , Xin Deng , Zuogang Yang , Haolan Huangfu , Xiaozhan Yang , Jie Hu , Haoyi Zuo

{"title":"Scattering wavefront shaping guided by mask based on third-order correlation of light fields","authors":"Ying Zhao , Xiaodan Fan , Meigang Duan , Yao Ju , Xin Deng , Zuogang Yang , Haolan Huangfu , Xiaozhan Yang , Jie Hu , Haoyi Zuo","doi":"10.1016/j.optcom.2025.131716","DOIUrl":"10.1016/j.optcom.2025.131716","url":null,"abstract":"<div><div>This paper reports a method of manipulating scattered light fields based on third-order correlation of light fields (TCLF) guided by a mask. Different from the traditional computational reconstruction of object images through the second-order correlation of light intensity in ghost imaging, the TCLF can optically reconstruct mask images in scattered fields. This optical reconstruction process enables a portion of the energy in the scattered field to be redistributed to match the object, thus enabling this imaging technique to serve as scattering wavefront shaping (SWFS) guided by a mask. Experiments show that the TCLF can easily achieve SWFS with high-resolution modulation, which has always been a challenge in this research field. With high-resolution modulation, the TCLF can shape the scattered field into more complex images, including grayscale images, and even enable video transmission through the scattering medium. This research provides a new and powerful method for SWFS, thus offering technical support for scattering-assisted holography and finding potential applications in complex media imaging in the future.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"583 ","pages":"Article 131716"},"PeriodicalIF":2.2,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143619281","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

Design and control of rotating varifocal elliptical airy vortex beams using composite phase metasurfaces

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-03-07 DOI: 10.1016/j.optcom.2025.131727

Bo Hu , Si-jing Huang , Qian Qin , Jiong-jiong Cai , Ming-li Sun , Xiao-gang Wang , Kaikai- Huang , Yue-ying Qi , Bi-jun Xu

{"title":"Design and control of rotating varifocal elliptical airy vortex beams using composite phase metasurfaces","authors":"Bo Hu , Si-jing Huang , Qian Qin , Jiong-jiong Cai , Ming-li Sun , Xiao-gang Wang , Kaikai- Huang , Yue-ying Qi , Bi-jun Xu","doi":"10.1016/j.optcom.2025.131727","DOIUrl":"10.1016/j.optcom.2025.131727","url":null,"abstract":"<div><div>In this paper, we propose a novel method for generating tunable elliptical Airy beams (EAVBs) using a bilayer all-dielectric metasurface. The metasurface is designed through the integration and rotation of the phase profiles of elliptical Airy beams and two off-axis Fresnel lenses.The dynamic tuning of the focal length and the beam propagation characteristics is accomplished by taking advantage of the moiré effect, which is generated from the interference between the superimposed phase distributions. The metasurface was theoretically modeled using MATLAB and then verified through Finite-Difference Time-Domain (FDTD) simulations. The results show that it can flexibly control the focal points in the x-y and x-z planes, thereby enabling precise control over the trajectory and focal position of the beam. The high degree of agreement between the theoretical predictions and the simulation results verifies that the proposed metasurface design is effective and versatile. This innovative approach has great application potential in adaptive optics, high-resolution imaging, and optical systems for dynamic beam shaping and focus control.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"583 ","pages":"Article 131727"},"PeriodicalIF":2.2,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143644535","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

Real-time dynamically controllable polarization holographic grating 实时动态可控偏振全息光栅

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-03-06 DOI: 10.1016/j.optcom.2025.131717

Hong Chen , Ziyao Lyu , Changshun Wang

引用次数: 0

Enhanced robustness of high Q-factor chiral metasurface via Brillouin zone folding

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-03-06 DOI: 10.1016/j.optcom.2025.131693

Shuang Yang , Xin Zhang , Jia Liu , Hengli Feng , Hongyan Meng , Yang Jia , Yachen Gao

{"title":"Enhanced robustness of high Q-factor chiral metasurface via Brillouin zone folding","authors":"Shuang Yang , Xin Zhang , Jia Liu , Hengli Feng , Hongyan Meng , Yang Jia , Yachen Gao","doi":"10.1016/j.optcom.2025.131693","DOIUrl":"10.1016/j.optcom.2025.131693","url":null,"abstract":"<div><div>Chiral structures have broad applications in fields such as biosensing, chemistry, and nonlinear optics. However, in the design of chiral structures, it is also challenging to achieve a high circular dichroism (CD), high Q-factor and high robustness. In our study, we designed a metasurface based on α-Si, by inducting Brillouin zone folding we enhanced the Q-factor of BICs over a broad wavevector range. Specifically, by doubling the period of the unit structure of the metasurface, we enhanced the Q factors over a wide range via Brillouin zone folding. Furthermore, by breaking in-plane and out-of-plane symmetries of the structure, dual narrowband chiral functionalities were achieved. At the two resonance frequencies of 17.4808 THz and 17.4811 THz, CD values reached −0.94 and −0.93, with Q-factors as high as 3.7 × 10<sup>5</sup>, exhibiting strong robustness in both momentum and geometric spaces. Finaly, we investigated the physical mechanisms of CD and high-Q factors through band structure analysis and multipole decomposition. This work provides new insights into the design of chiral optical devices and offers potential benefits for improving the performance of biosensing and nonlinear optical devices.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"583 ","pages":"Article 131693"},"PeriodicalIF":2.2,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143601528","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

Enhancing the performance of NOMA-based VLC systems using a proposed adaptive superimposed constellation Algorithm with an exact SER analysis

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-03-06 DOI: 10.1016/j.optcom.2025.131701

Androw Sobhy , Shaimaa ElSayed , Hala Abd El-kader Mansour , Maher Abdelrasoul , Esraa M. Eid

{"title":"Enhancing the performance of NOMA-based VLC systems using a proposed adaptive superimposed constellation Algorithm with an exact SER analysis","authors":"Androw Sobhy , Shaimaa ElSayed , Hala Abd El-kader Mansour , Maher Abdelrasoul , Esraa M. Eid","doi":"10.1016/j.optcom.2025.131701","DOIUrl":"10.1016/j.optcom.2025.131701","url":null,"abstract":"<div><div>Non-orthogonal multiple access (NOMA) is an impressive multi-access technology that enhances the spectral efficiency of visible light communication (VLC) systems. However, improved spectral efficiency might lead to performance reduction. To resolve this issue, this paper proposes an innovative approach termed the adaptive superimposed constellation algorithm (ASCA), which is intended for NOMA-based VLC systems. The proposed algorithm includes two fundamental methods: the optimal power allocation factor (OPAF) and adaptive M-QAM selection (AMS). The OPAF method determines the appropriate PA, ensuring non-overlapping decision regions for superimposed constellation symbols across different modulation orders supported by corresponding theoretical results. The AMS method dynamically selects the M-QAM modulation order for users, striking a balance between communication quality and data transmission rates. These methods collectively improve fairness among users, reduce the symbol error rate (SER), analyze limitations regarding the total number of users the system can serve, and evaluate the system's capacity to support multiple users effectively. This paper offers closed-form SER expressions for served users based on square QAM modulation and an imperfect successive interference cancellation (SIC) scenario. Theoretical analysis and simulations confirm the findings. The simulation results show that the proposed algorithm achieves better SER performance than other power domain (PD) NOMA schemes, making it a reliable and efficient solution for integrating NOMA into VLC systems.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"583 ","pages":"Article 131701"},"PeriodicalIF":2.2,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143610926","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

Highly localized linear array of optical rings with multiple tunable degrees of freedom

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2025-03-06 DOI: 10.1016/j.optcom.2025.131714

Yongxi Zeng , Yanzhong Yu , Musheng Chen , Pinghui Wu , Shiyang Zheng , Zhonglong Wu , Shunda Lin , Guangping Yao , Qiwen Zhan

{"title":"Highly localized linear array of optical rings with multiple tunable degrees of freedom","authors":"Yongxi Zeng , Yanzhong Yu , Musheng Chen , Pinghui Wu , Shiyang Zheng , Zhonglong Wu , Shunda Lin , Guangping Yao , Qiwen Zhan","doi":"10.1016/j.optcom.2025.131714","DOIUrl":"10.1016/j.optcom.2025.131714","url":null,"abstract":"<div><div>By combining time-reversal techniques and antenna radiation theory, we present a simplified approach to generate a novel highly localized linear array of optical rings with multiple tunable degrees of freedom, without complex optimization of the pupil field. Utilizing the radiation field of a magnetic current line source (MLS) with a periodic cosine-squared tapered distribution, we inversely obtain the pupil field required to generate the desired focal field. The characteristics of the focal field, after focusing by a 4π focusing system, are evaluated through vector Debye diffraction integral theory. The results reveal that the focal field forms a linear array of identical optical rings aligned along the direction of the MLS. Each ring exhibits a purely azimuthal polarization with only azimuthal optical field components. The number of rings is determined by the periodic parameters of the magnetic current, while the position and spacing of the rings depend on both the length and periodic parameters of the MLS. The highly localized, tunable linear array of optical rings holds significant potential for applications in optical parallel processing, multi-point particle trapping, and transportation.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":"583 ","pages":"Article 131714"},"PeriodicalIF":2.2,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143580717","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