Optics Communications最新文献_第7页

Influence of incorporated particles on the optical performance of VO2 nanoparticle-based thermochromic films 加入的粒子对基于 VO2 纳米粒子的热致变色薄膜光学性能的影响

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2024-10-03 DOI: 10.1016/j.optcom.2024.131182

Yinmo Xie , Peihui Jiang , Kewei Sun , Wenlong Lu , Yunxian Ji , Qingzhi Lai , Jianyu Tan

{"title":"Influence of incorporated particles on the optical performance of VO2 nanoparticle-based thermochromic films","authors":"Yinmo Xie , Peihui Jiang , Kewei Sun , Wenlong Lu , Yunxian Ji , Qingzhi Lai , Jianyu Tan","doi":"10.1016/j.optcom.2024.131182","DOIUrl":"10.1016/j.optcom.2024.131182","url":null,"abstract":"<div><div>Vanadium dioxide (VO<sub>2</sub>) nanoparticle-based thermochromic films are widely used in smart windows because of their favorable thermochromic and optical properties. The introduction of additional particles into VO<sub>2</sub> NP-based films enables the integration of their properties with those of the original films. This combination serves to modulate the optical performance of the films further. However, the impact of the incorporated particles on the optical performance of VO<sub>2</sub> NP-based thermochromic films has not been elucidated. In this study, the influence of particles with varying refractive indices, volume fractions, and sizes, when incorporated into VO₂ NP-based films, was calculated using the finite-difference time-domain (FDTD) method. The results indicate that an increase in the refractive index or the size of the incorporated particles led to an enhanced solar modulation ability (Δ<em>T</em><sub>sol</sub>), albeit at the cost of reducing the luminous transmittance (<em>T</em><sub>lum</sub>). Conversely, increasing the volume fraction of the particles did not significantly enhance the Δ<em>T</em><sub>sol</sub>. Additionally, the introduction of additional particles into the film further reduces the total energy consumption by a maximum of 2.6 MJ/m<sup>2</sup> compared to VO<sub>2</sub> NP-based films, according to EnergyPlus software analysis. Our findings offer new perspectives and recommendations for the development and practical implementation of thermochromic smart windows.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2024-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142433340","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

High extinction ratio multi-polarization states preparation based on SOI integrated chips 基于 SOI 集成芯片的高消光比多偏振态制备技术

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2024-10-02 DOI: 10.1016/j.optcom.2024.131177

Chunxue Zhang , Hanming Yang , Pengwei Cui , Junchi Ma , Song Huang , Liyong Guo , Jiangaung Li , Jiashun Zhang , Yue Wang , Xiaojie Yin , Wei Chen , Yuanda Wu , Junming An

{"title":"High extinction ratio multi-polarization states preparation based on SOI integrated chips","authors":"Chunxue Zhang , Hanming Yang , Pengwei Cui , Junchi Ma , Song Huang , Liyong Guo , Jiangaung Li , Jiashun Zhang , Yue Wang , Xiaojie Yin , Wei Chen , Yuanda Wu , Junming An","doi":"10.1016/j.optcom.2024.131177","DOIUrl":"10.1016/j.optcom.2024.131177","url":null,"abstract":"<div><div>Quantum key distribution (QKD) leverages the principles of quantum mechanics to provide an unconditionally secure public-key cryptographic system. Polarization encoding is a commonly employed method in QKD. However, the low extinction ratio of polarization states significantly impacts the error rate in QKD systems, thereby threatening the security of communication. Here, we propose a structure and method for the preparation of high-extinction-ratio polarization states based on silicon photonic integrated chips. Our chip integrates thermo-optic modulators and silicon carrier-depletion modulators to achieve the transformation of information from path encoding to polarization encoding through a 2-D grating. We have successfully prepared six polarization states using only thermo-optic modulators, with an average polarization extinction ratio of 35.8 dB. Furthermore, we have successfully prepared six polarization states using a combination of thermo-optic and electro-optic modulators, with an average polarization extinction ratio exceeding 30.6 dB. Notably, our system demonstrated remarkable stability over a 2-h testing period, with the polarization extinction ratio remaining essentially unchanged.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2024-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142433190","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 6-mode pre-amplifier for turbulence-resistant free-space optical communication 用于抗湍流自由空间光通信的 6 模式前置放大器

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2024-10-02 DOI: 10.1016/j.optcom.2024.131178

Peng Zhang , Hao Yu , Wentao Wu , Shuang He , Yuanxin Wang , Dongsheng Tian , Shoufeng Tong

{"title":"A 6-mode pre-amplifier for turbulence-resistant free-space optical communication","authors":"Peng Zhang , Hao Yu , Wentao Wu , Shuang He , Yuanxin Wang , Dongsheng Tian , Shoufeng Tong","doi":"10.1016/j.optcom.2024.131178","DOIUrl":"10.1016/j.optcom.2024.131178","url":null,"abstract":"<div><div>A few-mode pre-amplifier with high gain and high coupling efficiency was suitable for the turbulence-resistant free-space optical (FSO) communication. Here, we first built and experimentally demonstrated a forward- and core-pumped 6-mode (6 M) pre-amplifier. By optimizing the 6 M erbium-doped fiber (EDF) length, we achieved over 28 dB of gain and a noise figure of less than 7 dB with an input intensity of −30 dBm. Moreover, we experimentally evaluated the 6 M pre-amplifier of 2.5 Gbps On-Off Keying (OOK) signal transmission with a homemade tunable turbulence emulator. The advantages of the 6 M pre-amplifier over the single-mode (SM) pre-amplifier varied with channel turbulence conditions in terms of communication performances. Compared with the SM pre-amplifier, the coupling efficiencies increased by 4.5 dB and 5.8 dB on average, and the median bit error rates (BERs) of the communication system improved by 2 and 5 orders of magnitude, respectively, in the presence of channels with the scintillation index <span><math><mrow><msubsup><mi>σ</mi><mi>I</mi><mn>2</mn></msubsup></mrow></math></span> of 0.3978 and 1.0553 (moderate to strong turbulence).</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2024-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142433274","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

Increasing the space–bandwidth product of holographic displays by segmenting and combining phase masks 通过分割和组合相位掩模提高全息显示器的空间带宽积

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2024-10-01 DOI: 10.1016/j.optcom.2024.131169

Chih-Hao Chuang , Nehemiah Chuanfeng Kuo , Tzu-An Chou , Ling-Dong Tsau , Chien-Yu Chen

引用次数: 0

Understanding the mechanism of pulse cumulative effect on supercontinuum generation from femtosecond laser filament in air 了解脉冲累积效应对空气中飞秒激光灯丝产生超连续光的影响机制

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2024-09-29 DOI: 10.1016/j.optcom.2024.131171

Chaopeng Yang , Tie-Jun Wang , Yaoxiang Liu , Yingxia Wei , Juan Long , Rao Adeel Un Nabi , Ying Xu , Xianwang Li , Yuxin Leng

{"title":"Understanding the mechanism of pulse cumulative effect on supercontinuum generation from femtosecond laser filament in air","authors":"Chaopeng Yang , Tie-Jun Wang , Yaoxiang Liu , Yingxia Wei , Juan Long , Rao Adeel Un Nabi , Ying Xu , Xianwang Li , Yuxin Leng","doi":"10.1016/j.optcom.2024.131171","DOIUrl":"10.1016/j.optcom.2024.131171","url":null,"abstract":"<div><div>We investigate the influence of pulse cumulative effect on supercontinuum generation from femtosecond laser filaments in air. Based on experimental and numerical insights, a clear physical picture of the pulse cumulative effect on the supercontinuum generation is constructed. The experimental results show that higher repetition rates correlated with supercontinuum extension into shorter wavelengths, attributed to the pulse cumulative effect, which is a consequence of gas dynamics influenced by heating, resulting in a reduced density of gas molecules. The effects on Kerr and plasma-induced self-phase modulation are analyzed in terms of the supercontinuum generation mechanism, and it is concluded that enhanced Kerr-induced self-phase modulation leads to supercontinuum broadening towards shorter wavelengths. This study holds promise not only for better understanding the supercontinuum generation mechanism in the filaments but also for providing guidance on the supercontinuum generation in different repetition rate and their applications.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2024-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142433273","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

Giant and reconfigurable vortical dichroism with multi-layer spiral metamaterials 利用多层螺旋超材料实现巨型可重构涡旋二色性

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2024-09-29 DOI: 10.1016/j.optcom.2024.131174

Kangzhun Peng , Shiqi Luo , Zhi-Yuan Li , Wenyao Liang

引用次数: 0

A technique to improve the fixed-sphere decoding algorithm for Spectrally Efficient Frequency Division Multiplexing systems 改进频谱高效频分复用系统固定球解码算法的技术

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2024-09-29 DOI: 10.1016/j.optcom.2024.131168

Boyi Liu , Liu Yang , Member, IEEE, Mengyan Li , Lifu Zhang , Tao Zhang , Fengguang Luo , Yongming Hu

{"title":"A technique to improve the fixed-sphere decoding algorithm for Spectrally Efficient Frequency Division Multiplexing systems","authors":"Boyi Liu , Liu Yang , Member, IEEE, Mengyan Li , Lifu Zhang , Tao Zhang , Fengguang Luo , Yongming Hu","doi":"10.1016/j.optcom.2024.131168","DOIUrl":"10.1016/j.optcom.2024.131168","url":null,"abstract":"<div><div>Spectral Efficient Frequency Division Multiplexing (SEFDM) enhances spectral efficiency by narrowing subcarrier bandwidth, however it introduces severe inter-carrier interference (ICI). Currently, the most effective solution is the Fixed Sphere Detection (FSD) algorithm. In previous studies, we found that in order to better reduce the computational complexity of FSD, it is always through adding preprocessing and other pre-algorithms. Although this approach can effectively fix the search radius <em>g</em> in FSD, the complexity of the FSD algorithm itself has not been reduced. Since FSD determines the exploration path by fixing the tree width (Tw), and the selection of exploration paths can directly affect the final search for the optimal candidate values. In this paper we analyze the traditional algorithm from three angles - computational path, ICI generation, and computational complexity, and propose an Optimization Fixed Sphere Detection (OFSD) algorithm. It reduces the number of calculations required when initially selecting exploration paths by narrowing the search range. This allows us to avoid most unnecessary calculations during path selection. In this way, we can greatly reduce the computational complexity. Based on the simulation results, the proposed algorithm in the paper achieves a significant reduction in computational complexity compared to the FSD algorithm (up to 25% at maximum), while the performance drops by at most 0.12 dB when BCF is 0.8 and drops by at most 0.09 dB when BCF is 0.9.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2024-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142433201","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

Modulation of optical force by adjusting the distance between three-layer photonic crystal slabs 通过调整三层光子晶体板之间的距离调制光力

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2024-09-29 DOI: 10.1016/j.optcom.2024.131172

Xiaoxue Li , Guanghao Rui , Qiannan Cui , Jun He , Chunxiang Xu , Bing Gu

{"title":"Modulation of optical force by adjusting the distance between three-layer photonic crystal slabs","authors":"Xiaoxue Li , Guanghao Rui , Qiannan Cui , Jun He , Chunxiang Xu , Bing Gu","doi":"10.1016/j.optcom.2024.131172","DOIUrl":"10.1016/j.optcom.2024.131172","url":null,"abstract":"<div><div>Optical forces induced by polarization singularities from photonic crystal slabs (PCSs) have gained widely attention in recent years. To enhance the degree of freedom in controlling far-field optical forces, we propose and design a three-layer PCSs structure that simultaneously possesses multiple optical forces with reconfigurability. By modulating the interlayer spacing, the coupling strength between the slabs is regulated, resulting in a band transition from the nodal rings to the nodal ridge, which facilitates the generation of dual polarization vortices. These dual polarization vortices induce multiple phase singularities at their boundaries, leading to multiple optical force singularities, offering the possibility of capturing and dispersing nanoparticles. Interestingly, tuning the spacing among the slabs can transform the converging force into the diverging force at the center, therefore achieving particle screening. This work not only expands the application of nodal ridges to optical force in photonic structures but also provides a feasible approach for the generation of double-ring vortex beam in the nano-optics field.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2024-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142433270","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

Corrigendum to “10-mJ 300-fs 1-kHz cryogenically cooled Yb:CaF2 regenerative amplifier”[Opt Commun. 565 (2024) 130687] 10-mJ 300-fs 1-kHz 低温冷却 Yb:CaF2 再生放大器"[《光学通报》565 (2024) 130687] 更正

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2024-09-28 DOI: 10.1016/j.optcom.2024.131160

Guangyin Zhang , Ruixuan Li , Kui Li , Hao Xu , Bo Zhang , Jin Niu , Yuan Sui , Mingheng Yuan , Xiaopeng Liu , Yongjun Ma , Yutong Wang , Xiaoshi Zhang , Zhenao Bai , Jie Li , Zhongwei Fan

引用次数: 0

Deep-learning based single-shot 3D reconstruction with simulated color-crosstalk and randomized extrinsics 基于深度学习的单镜头三维重建与模拟色彩串扰和随机外显子

IF 2.2 3区物理与天体物理

Optics Communications Pub Date : 2024-09-28 DOI: 10.1016/j.optcom.2024.131134

Tianbo Liu, Yuxiang Xu, Xiaoyu Wang, Songping Mai

{"title":"Deep-learning based single-shot 3D reconstruction with simulated color-crosstalk and randomized extrinsics","authors":"Tianbo Liu, Yuxiang Xu, Xiaoyu Wang, Songping Mai","doi":"10.1016/j.optcom.2024.131134","DOIUrl":"10.1016/j.optcom.2024.131134","url":null,"abstract":"<div><div>In recent years, many single-frame 3D reconstruction schemes based on fringe projection profilometry (FPP) have been proposed. However, most single-frame reconstruction schemes still face the following three issues: (1) obtaining large datasets is very time-consuming, (2) focusing only on achieving single-frame reconstruction for white objects, and (3) requiring fixing the camera-projector positional relationship, increasing operational difficulty. By building a virtual FPP simulation system, our method can quickly render the required datasets, avoiding cumbersome manual operations. When rendering the datasets, we simulate adverse factors such as color channel crosstalk, system extrinsic parameter variations, and object surface colors to guide the training of the neural network. Ultimately, from a single three-frequency color image, the corresponding three-frequency three-step phase-shift images are predicted, achieving single-frame 3D reconstruction of colored objects and allowing some variation in system extrinsic parameters. Real-world experiments demonstrate that the network trained with the diverse data generated by our virtual system has good accuracy, providing valuable guidance for the practical application of deep learning methods.</div></div>","PeriodicalId":19586,"journal":{"name":"Optics Communications","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2024-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142356934","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