Frontiers of Optoelectronics最新文献

Dual-functional application of Ca₂Ta₂O₇:Bi³⁺/Eu³⁺ phosphors in multicolor tunable optical thermometry and WLED. Ca2Ta2O7:Bi3+/Eu3+ 荧光粉在多色可调光学测温和 WLED 中的双重功能应用。

IF 4.1 3区工程技术

Frontiers of Optoelectronics Pub Date : 2024-09-04 DOI: 10.1007/s12200-024-00134-2

Jingjing Ru, Bing Zhao, Fan Zeng, Feiyun Guo, Jinhua Liu, Jianzhong Chen

{"title":"Dual-functional application of Ca2Ta2O7:Bi3+/Eu3+ phosphors in multicolor tunable optical thermometry and WLED.","authors":"Jingjing Ru, Bing Zhao, Fan Zeng, Feiyun Guo, Jinhua Liu, Jianzhong Chen","doi":"10.1007/s12200-024-00134-2","DOIUrl":"10.1007/s12200-024-00134-2","url":null,"abstract":"A series of Bi3+/Eu3+ co-doped Ca2Ta2O7 (CTO:Bi3+/Eu3+) phosphors were prepared by high-temperature solid-state method for dual-emission center optical thermometers and white light-emitting diode (WLED) device. By modulating the doping ratio of Bi3+/Eu3+ and utilizing the energy transfer from Bi3+ to Eu3+, the tunable color emission ranging from green to reddish-orange was realized. The designed CTO:0.04Bi3+/Eu3+ optical thermometers exhibit significant thermochromism, superior stability, and repeatability, with maximum sensitivities of Sa = 0.055 K-1 (at 510 K) and Sr = 1.298% K-1 (at 480 K) within the temperature range of 300-510 K, owing to the different thermal quenching behaviors between Bi3+ and Eu3+ ions. These features indicate the potential application prospects of the prepared samples in visualized thermometer or high-temperature safety marking. Furthermore, leveraging the excellent zero-thermal-quenching performance, outstanding acid/alkali resistance, and color stability of CTO:0.04Bi3+/0.16Eu3+ phosphor, a WLED device with a high Ra value of 95.3 has been realized through its combination with commercially available blue and green phosphors, thereby demonstrating the potential application of CTO:0.04Bi3+/0.16Eu3+ in near-UV pumped WLED devices.","PeriodicalId":12685,"journal":{"name":"Frontiers of Optoelectronics","volume":null,"pages":null},"PeriodicalIF":4.1,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11374947/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142125449","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Correction: Control of visible-range transmission and reflection haze by varying pattern size, shape and depth in flexible metasurfaces. 更正：通过改变柔性超表面的图案大小、形状和深度，控制可见光范围内的透射和反射雾度。

IF 4.1 3区工程技术

Frontiers of Optoelectronics Pub Date : 2024-08-25 DOI: 10.1007/s12200-024-00135-1

Avijit Maity, Vaswati Biswas, R Vijaya

引用次数: 0

Stereoscopic spatial graphical method of Mueller matrix: Global-Polarization Stokes Ellipsoid. 穆勒矩阵的立体空间图解法：全球极化斯托克斯椭球体。

IF 4.1 3区工程技术

Frontiers of Optoelectronics Pub Date : 2024-08-16 DOI: 10.1007/s12200-024-00132-4

Xinxian Zhang, Jiawei Song, Jiahao Fan, Nan Zeng, Honghui He, Valery V Tuchin, Hui Ma

引用次数: 0

Low-light enhancement method with dual branch feature fusion and learnable regularized attention. 采用双分支特征融合和可学习正则化注意力的弱光增强方法

IF 4.1 3区工程技术

Frontiers of Optoelectronics Pub Date : 2024-08-14 DOI: 10.1007/s12200-024-00129-z

Yixiang Sun, Mengyao Ni, Ming Zhao, Zhenyu Yang, Yuanlong Peng, Danhua Cao

{"title":"Low-light enhancement method with dual branch feature fusion and learnable regularized attention.","authors":"Yixiang Sun, Mengyao Ni, Ming Zhao, Zhenyu Yang, Yuanlong Peng, Danhua Cao","doi":"10.1007/s12200-024-00129-z","DOIUrl":"10.1007/s12200-024-00129-z","url":null,"abstract":"Restricted by the lighting conditions, the images captured at night tend to suffer from color aberration, noise, and other unfavorable factors, making it difficult for subsequent vision-based applications. To solve this problem, we propose a two-stage size-controllable low-light enhancement method, named Dual Fusion Enhancement Net (DFEN). The whole algorithm is built on a double U-Net structure, implementing brightness adjustment and detail revision respectively. A dual branch feature fusion module is adopted to enhance its ability of feature extraction and aggregation. We also design a learnable regularized attention module to balance the enhancement effect on different regions. Besides, we introduce a cosine training strategy to smooth the transition of the training target from the brightness adjustment stage to the detail revision stage during the training process. The proposed DFEN is tested on several low-light datasets, and the experimental results demonstrate that the algorithm achieves superior enhancement results with the similar parameters. It is worth noting that the lightest DFEN model reaches 11 FPS for image size of 1224×1024 in an RTX 3090 GPU.","PeriodicalId":12685,"journal":{"name":"Frontiers of Optoelectronics","volume":null,"pages":null},"PeriodicalIF":4.1,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11324645/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141975523","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Exceptional point enhanced nanoparticle detection in deformed Reuleaux-triangle microcavity. 变形 Reuleaux 三角微腔中的超常点增强型纳米粒子探测。

IF 4.1 3区工程技术

Frontiers of Optoelectronics Pub Date : 2024-08-08 DOI: 10.1007/s12200-024-00131-5

Jinhao Fei, Xiaobei Zhang, Qi Zhang, Yong Yang, Zijie Wang, Chuanlu Deng, Yi Huang, Tingyun Wang

引用次数: 0

Contactless integrated photonic probes: fundamentals, characteristics, and applications. 非接触式集成光子探针：基础、特性和应用。

IF 4.1 3区工程技术

Frontiers of Optoelectronics Pub Date : 2024-08-05 DOI: 10.1007/s12200-024-00127-1

Guangze Wu, Yuanjian Wan, Zhao Wang, Xiaolong Hu, Jinwei Zeng, Yu Zhang, Jian Wang

{"title":"Contactless integrated photonic probes: fundamentals, characteristics, and applications.","authors":"Guangze Wu, Yuanjian Wan, Zhao Wang, Xiaolong Hu, Jinwei Zeng, Yu Zhang, Jian Wang","doi":"10.1007/s12200-024-00127-1","DOIUrl":"10.1007/s12200-024-00127-1","url":null,"abstract":"On-chip optical power monitors are indispensable for functional implementation and stabilization of large-scale and complex photonic integrated circuits (PICs). Traditional on-chip optical monitoring is implemented by tapping a small portion of optical power from the waveguide, which leads to significant loss. Due to its advantages like non-invasive nature, miniaturization, and complementary metal-oxide-semiconductor (CMOS) process compatibility, a transparent monitor named the contactless integrated photonic probe (CLIPP), has been attracting great attention in recent years. The CLIPP indirectly monitors the optical power in the waveguide by detecting the conductance variation of the local optical waveguide caused by the surface state absorption (SSA) effect. In this review, we first introduce the fundamentals of the CLIPP including the concept, the equivalent electric model and the impedance read-out method, and then summarize some characteristics of the CLIPP. Finally, the functional applications of the CLIPP on the identification and feedback control of optical signal are discussed, followed by a brief outlook on the prospects of the CLIPP.","PeriodicalId":12685,"journal":{"name":"Frontiers of Optoelectronics","volume":null,"pages":null},"PeriodicalIF":4.1,"publicationDate":"2024-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11298509/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141888951","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Control of visible-range transmission and reflection haze by varying pattern size, shape and depth in flexible metasurfaces. 通过改变柔性超表面的图案大小、形状和深度来控制可见光范围内的透射和反射雾度。

IF 4.1 3区工程技术

Frontiers of Optoelectronics Pub Date : 2024-07-30 DOI: 10.1007/s12200-024-00125-3

Avijit Maity, Vaswati Biswas, R Vijaya

{"title":"Control of visible-range transmission and reflection haze by varying pattern size, shape and depth in flexible metasurfaces.","authors":"Avijit Maity, Vaswati Biswas, R Vijaya","doi":"10.1007/s12200-024-00125-3","DOIUrl":"10.1007/s12200-024-00125-3","url":null,"abstract":"Cost-effective soft imprint lithography technique is used to prepare flexible thin polymeric surfaces containing a periodic arrangement of nanodimples and nanobumps of sub-micron size. Using a single master mold of self-assembled colloidal crystal, metasurfaces with different depths and heights of patterns with a fixed pitch are possible, which makes the process inexpensive and simple. These metasurfaces are studied for their diffuse and total transmission and reflection spectra in the visible range. The transmission haze and reflection haze are calculated from the measurements. The surface containing nanobumps of lesser pattern height result in higher values of reflection and transmission haze than from surfaces containing nanodimples of much higher depth for the same pitch. The haze is more dependent on the pattern depth or height and less dependent on the pitch of the pattern. Far-field transmission profiles measured in the same wavelength range from the patterned surfaces show that the scattering increases with the increase of the ratio of pattern depth/height to pitch, similar to the haze measurements conducted with a closed integrating sphere. These profiles show that the angular spread of scattered light in transmission is within 10°, explaining the reason for the relatively low transmission haze in all the patterned surfaces. Simulation results confirm that the nanobump pattern gives higher transmission haze compared to nanodimple pattern. By controlling the ratio of pattern depth/height to pitch of the features on these surfaces, both an increase in optical haze and a balance between total reflection intensity and total transmission intensity can be achieved.","PeriodicalId":12685,"journal":{"name":"Frontiers of Optoelectronics","volume":null,"pages":null},"PeriodicalIF":4.1,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11289189/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141792301","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Real-time detection of aging status of methylammonium lead iodide perovskite thin films by using terahertz time-domain spectroscopy. 利用太赫兹时域光谱实时检测甲铵碘化铅包晶石薄膜的老化状态。

IF 4.1 3区工程技术

Frontiers of Optoelectronics Pub Date : 2024-07-29 DOI: 10.1007/s12200-024-00128-0

Jinzhuo Xu, Yinghui Wu, Shuting Fan, Xudong Liu, Zhen Yin, Youpeng Yang, Renheng Wang, Zhengfang Qian, Yiwen Sun

{"title":"Real-time detection of aging status of methylammonium lead iodide perovskite thin films by using terahertz time-domain spectroscopy.","authors":"Jinzhuo Xu, Yinghui Wu, Shuting Fan, Xudong Liu, Zhen Yin, Youpeng Yang, Renheng Wang, Zhengfang Qian, Yiwen Sun","doi":"10.1007/s12200-024-00128-0","DOIUrl":"10.1007/s12200-024-00128-0","url":null,"abstract":"The inadequate stability of organic-inorganic hybrid perovskites remains a significant barrier to their widespread commercial application in optoelectronic devices. Aging phenomena profoundly affect the optoelectronic performance of perovskite-based devices. In addition to enhancing perovskite stability, the real-time detection of aging status, aimed at monitoring the aging progression, holds paramount importance for both fundamental research and the commercialization of organic-inorganic hybrid perovskites. In this study, the aging status of perovskite was real-time investigated by using terahertz time-domain spectroscopy. Our analysis consistently revealed a gradual decline in the intensity of the absorption peak at 0.968 THz with increasing perovskite aging. Furthermore, a systematic discussion was conducted on the variations in intensity and position of the terahertz absorption peaks as the perovskite aged. These findings facilitate the real-time assessment of perovskite aging, providing a promising method to expedite the commercialization of perovskite-based optoelectronic devices.","PeriodicalId":12685,"journal":{"name":"Frontiers of Optoelectronics","volume":null,"pages":null},"PeriodicalIF":4.1,"publicationDate":"2024-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11286615/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141787810","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mode division multiplexing reconstructive spectrometer with an all-fiber photonics lantern. 采用全光纤光子灯笼的模分复用重构光谱仪。

IF 4.1 3区工程技术

Frontiers of Optoelectronics Pub Date : 2024-07-17 DOI: 10.1007/s12200-024-00130-6

Junrui Liang, Jun Ye, Xiaoya Ma, Yao Lu, Jun Li, Jiangming Xu, Zilun Chen, Jinyong Leng, Zongfu Jiang, Pu Zhou

{"title":"Mode division multiplexing reconstructive spectrometer with an all-fiber photonics lantern.","authors":"Junrui Liang, Jun Ye, Xiaoya Ma, Yao Lu, Jun Li, Jiangming Xu, Zilun Chen, Jinyong Leng, Zongfu Jiang, Pu Zhou","doi":"10.1007/s12200-024-00130-6","DOIUrl":"10.1007/s12200-024-00130-6","url":null,"abstract":"This study presents a high-accuracy, all-fiber mode division multiplexing (MDM) reconstructive spectrometer (RS). The MDM was achieved by utilizing a custom-designed 3 × 1 mode-selective photonics lantern to launch distinct spatial modes into the multimode fiber (MMF). This facilitated the information transmission by increasing light scattering processes, thereby encoding the optical spectra more comprehensively into speckle patterns. Spectral resolution of 2 pm and the recovery of 2000 spectral channels were accomplished. Compared to methods employing single-mode excitation and two-mode excitation, the three-mode excitation method reduced the recovered error by 88% and 50% respectively. A resolution enhancement approach based on alternating mode modulation was proposed, reaching the MMF limit for the 3 dB bandwidth of the spectral correlation function. The proof-of-concept study can be further extended to encompass diverse programmable mode excitations. It is not only succinct and highly efficient but also well-suited for a variety of high-accuracy, high-resolution spectral measurement scenarios.","PeriodicalId":12685,"journal":{"name":"Frontiers of Optoelectronics","volume":null,"pages":null},"PeriodicalIF":4.1,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11252098/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141626500","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Polarization and wavelength routers based on diffractive neural network. 基于衍射神经网络的偏振和波长路由器。

IF 4.1 3区工程技术

Frontiers of Optoelectronics Pub Date : 2024-07-16 DOI: 10.1007/s12200-024-00126-2

Xiaohong Lin, Yulan Fu, Kuo Zhang, Xinping Zhang, Shuai Feng, Xiaoyong Hu

{"title":"Polarization and wavelength routers based on diffractive neural network.","authors":"Xiaohong Lin, Yulan Fu, Kuo Zhang, Xinping Zhang, Shuai Feng, Xiaoyong Hu","doi":"10.1007/s12200-024-00126-2","DOIUrl":"10.1007/s12200-024-00126-2","url":null,"abstract":"In the field of information processing, all-optical routers are significant for achieving high-speed, high-capacity signal processing and transmission. In this study, we developed three types of structurally simple and flexible routers using the deep diffractive neural network (D2NN), capable of routing incident light based on wavelength and polarization. First, we implemented a polarization router for routing two orthogonally polarized light beams. The second type is the wavelength router that can route light with wavelengths of 1550, 1300, and 1100 nm, demonstrating outstanding performance with insertion loss as low as 0.013 dB and an extinction ratio of up to 18.96 dB, while also maintaining excellent polarization preservation. The final router is the polarization-wavelength composite router, capable of routing six types of input light formed by pairwise combinations of three wavelengths (1550, 1300, and 1100 nm) and two orthogonal linearly polarized lights, thereby enhancing the information processing capability of the device. These devices feature compact structures, maintaining high contrast while exhibiting low loss and passive characteristics, making them suitable for integration into future optical components. This study introduces new avenues and methodologies to enhance performance and broaden the applications of future optical information processing systems.","PeriodicalId":12685,"journal":{"name":"Frontiers of Optoelectronics","volume":null,"pages":null},"PeriodicalIF":4.1,"publicationDate":"2024-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11250754/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141619767","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0