Frontiers of Optoelectronics最新文献_第8页

Two types of ultrafast mode-locking operations from an Er-doped fiber laser based on germanene nanosheets. 锗烯纳米片掺铒光纤激光器的两种超快锁模操作。

IF 5.4 3区工程技术

Frontiers of Optoelectronics Pub Date : 2023-06-07 DOI: 10.1007/s12200-023-00068-1

Baohao Xu, Zhiyuan Jin, Lie Shi, Huanian Zhang, Qi Liu, Peng Qin, Kai Jiang, Jing Wang, Wenjing Tang, Wei Xia

引用次数: 1

Generation of mode-locked states of conventional solitons and bright-dark solitons in graphene mode-locked fiber laser. 在石墨烯锁模光纤激光器中产生传统孤子和明暗孤子的锁模态。

IF 4.1 3区工程技术

Frontiers of Optoelectronics Pub Date : 2023-06-02 DOI: 10.1007/s12200-023-00067-2

Zixiong Li, Mingyu Li, Xinyi Hou, Lei Du, Lin Xiao, Tianshu Wang, Wanzhuo Ma

引用次数: 0

A broadband integrated microwave photonic mixer based on balanced photodetection. 一种基于平衡光探测的宽带集成微波光子混频器。

IF 5.4 3区工程技术

Frontiers of Optoelectronics Pub Date : 2023-05-26 DOI: 10.1007/s12200-023-00064-5

Zhenzhu Xu, Li Mei, Yuhua Chong, Xudong Gao, Shoubao Han, Chengkun Yang, Lin Li

{"title":"A broadband integrated microwave photonic mixer based on balanced photodetection.","authors":"Zhenzhu Xu, Li Mei, Yuhua Chong, Xudong Gao, Shoubao Han, Chengkun Yang, Lin Li","doi":"10.1007/s12200-023-00064-5","DOIUrl":"https://doi.org/10.1007/s12200-023-00064-5","url":null,"abstract":"An integrated microwave photonic mixer based on silicon photonic platforms is proposed, which consist of a dual-drive Mach-Zehnder modulator and a balanced photodetector. The modulated optical signals from microwave photonic links can be directly demodulated and down-converted to intermediate frequency (IF) signals by the photonic mixer. The converted signal is obtained by conducting off-chip subtraction of the outputs from the balanced photodetector, and subsequent filtering of the high frequency items by an electrical low-pass filter. Benefiting from balanced detection, the conversion gain of the IF signal is improved by 6 dB, and radio frequency leakage and common-mode noise are suppressed significantly. System-level simulations show that the frequency mixing system has a spurious-free dynamic range of 89 dB·Hz2/3, even with deteriorated linearity caused by the two cascaded modulators. The spur suppression ratio of the photonic mixer remains higher than 40 dB when the IF varies from 0.5 to 4 GHz. The electrical-electrical 3 dB bandwidth of frequency conversion is 11 GHz. The integrated frequency mixing approach is quite simple, requiring no extra optical filters or electrical 90° hybrid coupler, which makes the system more stable and with broader bandwidth so that it can meet the potential demand in practical applications.","PeriodicalId":12685,"journal":{"name":"Frontiers of Optoelectronics","volume":"16 1","pages":"11"},"PeriodicalIF":5.4,"publicationDate":"2023-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10219908/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9536352","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

Recent progress of in-fiber WGM microsphere resonator. 光纤内WGM微球谐振器研究进展。

IF 5.4 3区工程技术

Frontiers of Optoelectronics Pub Date : 2023-05-25 DOI: 10.1007/s12200-023-00066-3

Yong Yang, Zijie Wang, Xiaobei Zhang, Qi Zhang, Tingyun Wang

引用次数: 3

Light response and adsorption interaction of black phosphorus quantum dots and single-layer graphene phototransistor. 黑磷量子点与单层石墨烯光电晶体管的光响应及吸附相互作用。

IF 5.4 3区工程技术

Frontiers of Optoelectronics Pub Date : 2023-05-24 DOI: 10.1007/s12200-023-00065-4

Qi Han, Yadong Jiang, Xianchao Liu, Chaoyi Zhang, Jun Wang

{"title":"Light response and adsorption interaction of black phosphorus quantum dots and single-layer graphene phototransistor.","authors":"Qi Han, Yadong Jiang, Xianchao Liu, Chaoyi Zhang, Jun Wang","doi":"10.1007/s12200-023-00065-4","DOIUrl":"https://doi.org/10.1007/s12200-023-00065-4","url":null,"abstract":"Black phosphorus quantum dots (BPQDs) are synthesized and combined with graphene sheet. The fabricated BPQDs/graphene devices are capable of detecting visible and near infrared radiation. The adsorption effect of BPQDs in graphene is clarified by the relationship of the photocurrent and the shift of the Dirac point with different substrate. The Dirac point moves toward a neutral point under illumination with both SiO2/Si and Si3N4/Si substrates, indicating an anti-doped feature of photo-excitation. To our knowledge, this provides the first observation of photoresist induced photocurrent in such systems. Without the influence of the photoresist the device can respond to infrared light up to 980 nm wavelength in vacuum in a cryostat, in which the photocurrent is positive and photoconduction effect is believed to dominate the photocurrent. Finally, the adsorption effect is modeled using a first-principle method to give a picture of charge transfer and orbital contribution in the interaction of phosphorus atoms and single-layer graphene.","PeriodicalId":12685,"journal":{"name":"Frontiers of Optoelectronics","volume":"16 1","pages":"9"},"PeriodicalIF":5.4,"publicationDate":"2023-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10209371/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9526233","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

Efficient soluble PTCBI-type non-fullerene acceptor materials for organic solar cells. 有机太阳能电池用高效可溶性ptcbi型非富勒烯受体材料。

IF 5.4 3区工程技术

Frontiers of Optoelectronics Pub Date : 2023-04-23 DOI: 10.1007/s12200-023-00063-6

Xiang Gao, Fengbo Sun, Xinzhu Tong, Xufan Zheng, Yinuo Wang, Cong Xiao, Pengcheng Li, Renqiang Yang, Xunchang Wang, Zhitian Liu

{"title":"Efficient soluble PTCBI-type non-fullerene acceptor materials for organic solar cells.","authors":"Xiang Gao, Fengbo Sun, Xinzhu Tong, Xufan Zheng, Yinuo Wang, Cong Xiao, Pengcheng Li, Renqiang Yang, Xunchang Wang, Zhitian Liu","doi":"10.1007/s12200-023-00063-6","DOIUrl":"https://doi.org/10.1007/s12200-023-00063-6","url":null,"abstract":"Single perylene diimide (PDI) used as a non-fullerene acceptor (NFA) in organic solar cells (OSCs) is enticing because of its low cost and excellent stability. To improve the photovoltaic performance, it is vital to narrow the bandgap and regulate the stacking behavior. To address this challenge, we synthesize soluble perylenetetracarboxylic bisbenzimidazole (PTCBI) molecules with a bulky side chain at the bay region, by replacing the widely used \"swallow tail\" type alkyl chains at the imide position of PDI molecules with a planar benzimidazole structure. Compared with PDI molecules, PTCBI molecules exhibit red-shifted UV-vis absorption spectra with larger extinction coefficient, and one magnitude higher electron mobility. Finally, OSCs based on one soluble PTCBI-type NFA, namely MAS-7, exhibit a champion power conversion efficiency (PCE) of 4.34%, which is significantly higher than that of the corresponding PDI-based OSCs and is the highest PCE of PTCBI-based OSCs reported. These results highlight the potential of soluble PTCBI derivatives as NFAs in OSCs.","PeriodicalId":12685,"journal":{"name":"Frontiers of Optoelectronics","volume":"16 1","pages":"8"},"PeriodicalIF":5.4,"publicationDate":"2023-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10122612/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9423006","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

Self-supervised zero-shot dehazing network based on dark channel prior. 基于暗信道先验的自监督零射除雾网络。

IF 5.4 3区工程技术

Frontiers of Optoelectronics Pub Date : 2023-04-14 DOI: 10.1007/s12200-023-00062-7

Xinjie Xiao, Yuanhong Ren, Zhiwei Li, Nannan Zhang, Wuneng Zhou

{"title":"Self-supervised zero-shot dehazing network based on dark channel prior.","authors":"Xinjie Xiao, Yuanhong Ren, Zhiwei Li, Nannan Zhang, Wuneng Zhou","doi":"10.1007/s12200-023-00062-7","DOIUrl":"https://doi.org/10.1007/s12200-023-00062-7","url":null,"abstract":"Most learning-based methods previously used in image dehazing employ a supervised learning strategy, which is time-consuming and requires a large-scale dataset. However, large-scale datasets are difficult to obtain. Here, we propose a self-supervised zero-shot dehazing network (SZDNet) based on dark channel prior, which uses a hazy image generated from the output dehazed image as a pseudo-label to supervise the optimization process of the network. Additionally, we use a novel multichannel quad-tree algorithm to estimate atmospheric light values, which is more accurate than previous methods. Furthermore, the sum of the cosine distance and the mean squared error between the pseudo-label and the input image is applied as a loss function to enhance the quality of the dehazed image. The most significant advantage of the SZDNet is that it does not require a large dataset for training before performing the dehazing task. Extensive testing shows promising performances of the proposed method in both qualitative and quantitative evaluations when compared with state-of-the-art methods.","PeriodicalId":12685,"journal":{"name":"Frontiers of Optoelectronics","volume":"16 1","pages":"7"},"PeriodicalIF":5.4,"publicationDate":"2023-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10102283/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9309418","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

Integrated contra-directionally coupled chirped Bragg grating waveguide with a linear group delay spectrum. 具有线性群延迟谱的集成对向耦合啁啾布拉格光栅波导。

IF 5.4 3区工程技术

Frontiers of Optoelectronics Pub Date : 2023-04-10 DOI: 10.1007/s12200-023-00061-8

Xudong Gao, Zhenzhu Xu, Yupeng Zhu, Chengkun Yang, Shoubao Han, Zongming Duan, Fan Zhang, Jianji Dong

引用次数: 0

Design and modeling of high-performance mid-wave infrared InAsSb-based nBn photodetector using barrier band engineering approaches. 基于势垒带工程方法的高性能中波红外inassb nBn光电探测器的设计与建模。

IF 5.4 3区工程技术

Frontiers of Optoelectronics Pub Date : 2023-04-06 DOI: 10.1007/s12200-023-00060-9

Maryam Shaveisi, Peiman Aliparast

{"title":"Design and modeling of high-performance mid-wave infrared InAsSb-based nBn photodetector using barrier band engineering approaches.","authors":"Maryam Shaveisi, Peiman Aliparast","doi":"10.1007/s12200-023-00060-9","DOIUrl":"https://doi.org/10.1007/s12200-023-00060-9","url":null,"abstract":"We report a new nBn photodetector (nBn-PD) design based on the InAlSb/AlSb/InAlSb/InAsSb material systems for mid-wavelength infrared (MWIR) applications. In this structure, delta-doped compositionally graded barrier (δ-DCGB) layers are suggested, the advantage of which is creation of a near zero valence band offset in nBn photodetectors. The design of the δ-DCGB nBn-PD device includes a 3 µm absorber layer (n-InAs0.81Sb0.19), a unipolar barrier layer (AlSb), and 0.2 μm contact layer (n-InAs0.81Sb0.19) as well as a 0.116 µm linear grading region (InAlSb) from the contact to the barrier layer and also from the barrier to the absorber layer. The analysis includes various dark current contributions, such as the Shockley-Read-Hall (SRH), trap-assisted tunneling (TAT), Auger, and Radiative recombination mechanisms, to acquire more precise results. Consequently, we show that the method used in the nBn device design leads to diffusion-limited dark current so that the dark current density is 2.596 × 10-8 A/cm2 at 150 K and a bias voltage of - 0.2 V. The proposed nBn detector exhibits a 50% cutoff wavelength of more than 5 µm, the peak current responsivity is 1.6 A/W at a wavelength of 4.5 µm and a - 0.2 V bias with 0.05 W/cm2 backside illumination without anti-reflective coating. The maximum quantum efficiency at 4.5 µm is about 48.6%, and peak specific detectivity (D*) is of 3.37 × 1010 cm⋅Hz1/2/W. Next, to solve the reflection concern in this nBn devices, we use a BaF2 anti-reflection coating layer due to its high transmittance in the MWIR window. It leads to an increase of almost 100% in the optical response metrics, such as the current responsivity, quantum efficiency, and detectivity, compared to the optical response without an anti-reflection coating layer.","PeriodicalId":12685,"journal":{"name":"Frontiers of Optoelectronics","volume":"16 1","pages":"5"},"PeriodicalIF":5.4,"publicationDate":"2023-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10079799/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9261074","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: 1

High-resolution silicon photonic sensor based on a narrowband microwave photonic filter. 基于窄带微波光子滤波器的高分辨率硅光子传感器。

IF 5.4 3区工程技术

Frontiers of Optoelectronics Pub Date : 2023-03-27 DOI: 10.1007/s12200-023-00059-2

Haiyan Luo, Lu Xu, Jie Yan, Qiansheng Wang, Wenwu Wang, Xi Xiao

{"title":"High-resolution silicon photonic sensor based on a narrowband microwave photonic filter.","authors":"Haiyan Luo, Lu Xu, Jie Yan, Qiansheng Wang, Wenwu Wang, Xi Xiao","doi":"10.1007/s12200-023-00059-2","DOIUrl":"https://doi.org/10.1007/s12200-023-00059-2","url":null,"abstract":"Microwave photonic sensors are promising for improving sensing resolution and speed of optical sensors. In this paper, a high-sensitivity, high-resolution temperature sensor based on microwave photonic filter (MPF) is proposed and demonstrated. A micro-ring resonator (MRR) based on silicon-on-insulator is used as the sensing probe to convert the wavelength shift caused by temperature change to microwave frequency variation via the MPF system. By analyzing the frequency shift with high-speed and high-resolution monitors, the temperature change can be detected. The MRR is designed with multi-mode ridge waveguides to reduce propagation loss and achieves an ultra-high Q factor of 1.01 × 106. The proposed MPF has a single passband with a narrow bandwidth of 192 MHz. With clear peak-frequency shift, the sensitivity of the MPF-based temperature sensor is measured to be 10.22 GHz/°C. Due to higher sensitivity and ultra-narrow bandwidth of the MPF, the sensing resolution of the proposed temperature sensor is as high as 0.019 °C.","PeriodicalId":12685,"journal":{"name":"Frontiers of Optoelectronics","volume":"16 1","pages":"4"},"PeriodicalIF":5.4,"publicationDate":"2023-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10043093/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9208817","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