Optics letters最新文献_第9页

Multiwavelength optical storage by waveguide phase modulation. 波导相位调制的多波长光存储。

IF 3.3 2区物理与天体物理

Optics letters Pub Date : 2026-10-15 Epub Date: 2026-09-30 DOI: 10.1364/OL.601864

Zi-An Li, Run-Duo Chen, Jun-Fang Wu, Chao Li

引用次数: 0

Removal algorithm for crosstalk in dual-beam point-diffraction interferometry based on a four-beam interference model. 基于四光束干涉模型的双光束点衍射干涉中串扰去除算法。

IF 3.3 2区物理与天体物理

Optics letters Pub Date : 2026-10-15 Epub Date: 2026-10-05 DOI: 10.1364/OL.615189

Bo Li, Yiwei Hao, Wenxi Zhang, Xinxin Kong, Zhou Wu

引用次数: 0

Single-channel direction-resolved rotational Doppler metrology via bispectral closure phase. 通过双谱闭合相位的单通道方向分辨旋转多普勒计量。

IF 3.3 2区物理与天体物理

Optics letters Pub Date : 2026-10-15 Epub Date: 2026-09-17 DOI: 10.1364/OL.613987

Kang Bin, Yu Zhang, Ling Hong, Fei Lin, Li Zhang

引用次数: 0

X-ray imaging based on fluorescence spherical waves. 基于荧光球波的x射线成像。

IF 3.3 2区物理与天体物理

Optics letters Pub Date : 2026-10-15 Epub Date: 2026-09-24 DOI: 10.1364/OL.612268

Zhenlong Wang, Haipeng Zhang, Changzhe Zhao, Lian Xue, Hongxin Luo, Zhongliang Li

引用次数: 0

Integrated microresonator Brillouin gyroscope demonstrating 37 deg/h rotation measurements. 集成微谐振布里渊陀螺仪显示37度/小时的旋转测量。

IF 3.3 2区物理与天体物理

Optics letters Pub Date : 2026-10-15 Epub Date: 2026-09-17 DOI: 10.1364/OL.589952

Jinhao Ge, Qing-Xin Ji, Meiting Song, Kaikai Liu, Chuan Zhong, Hongrui Yan, Jin-Yu Liu, Peng Liu, Yan Yu, Rahul Chawlani, Sean Krzyzewski, Daniel J Blumenthal, Kerry Vahala

引用次数: 0

Non-uniformly sampled aperture-coded light-field microscopy. 非均匀取样孔径编码光场显微镜。

IF 3.3 2区物理与天体物理

Optics letters Pub Date : 2026-10-15 Epub Date: 2026-09-24 DOI: 10.1364/OL.613384

Jian Liu, Jiahao Xian, Shizhao Gao, Junzheng Peng, Manhong Yao, Shiping Li, Jingang Zhong

{"title":"Non-uniformly sampled aperture-coded light-field microscopy.","authors":"Jian Liu, Jiahao Xian, Shizhao Gao, Junzheng Peng, Manhong Yao, Shiping Li, Jingang Zhong","doi":"10.1364/OL.613384","DOIUrl":"https://doi.org/10.1364/OL.613384","url":null,"abstract":"Light-field microscopy enables three-dimensional volumetric imaging without mechanical scanning, making it highly promising for biomedical research. Conventional microlens-array-based light-field microscopes capture the light-field in a single snapshot but suffer from a trade-off between angular and spatial resolution, which limits spatial resolution. Aperture-coded light-field microscopy achieves full-resolution spatial sampling yet requires multiple measurements, thereby compromising temporal resolution. To overcome this limitation, we propose a non-uniformly sampled aperture-coded light-field microscopy method that exploits the non-uniform energy distribution in the aperture (Fourier) plane. Specifically, dense sampling is applied in the central region and sparse sampling toward the periphery. A single-pixel imaging algorithm is then used to reconstruct the 4D light-field. Experimental results show that our method reduces the number of required encodings by more than half compared to uniformly sampled methods while maintaining high image fidelity within a limited refocusing range. This facilitates the practical adoption of aperture-coded light-field microscopy.","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"51 20","pages":"5882-5885"},"PeriodicalIF":3.3,"publicationDate":"2026-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149228426","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Sub-mW low-latency silicon thermo-optic phase shifter using a foundry substrate undercut heater. 亚毫瓦低延迟硅热光移相器，采用铸造衬底下切加热器。

IF 3.3 2区物理与天体物理

Optics letters Pub Date : 2026-10-15 Epub Date: 2026-09-30 DOI: 10.1364/OL.614924

Noor Afsary, Shubham Mishra, Vishal Saxena

{"title":"Sub-mW low-latency silicon thermo-optic phase shifter using a foundry substrate undercut heater.","authors":"Noor Afsary, Shubham Mishra, Vishal Saxena","doi":"10.1364/OL.614924","DOIUrl":"https://doi.org/10.1364/OL.614924","url":null,"abstract":"We demonstrate a compact, foundry-compatible silicon thermo-optic phase shifter (TOPS) based on a substrate-undercut doped-silicon heater, achieving a π-phase-shift power of P π =0.74 mW at a drive voltage of only V π =0.91 V. Prior low-power phase shifters reach comparable or lower P π only by extending the heated length, enlarging the footprint, and none report CMOS-compatible drive voltages. Here, both the heater and the 2×2 multimode interference (MMI) couplers are optimized using particle swarm optimization (PSO), the former to jointly minimize P π and optical loss at a fixed 100 µm length in a compact 240×73 µm2 footprint. Integrated into a Mach-Zehnder switch, the device shows an insertion loss of 0.90 dB, an extinction ratio of 23 dB, and rise/fall times of 1.38/1.02 ms. To our knowledge, this is the first foundry-fabricated TOPS to combine sub-milliwatt P π , a compact low-latency arm, and a sub-1-V CMOS-compatible V π , offering a scalable route to low-energy programmable silicon photonic meshes.","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"51 20","pages":"5818-5821"},"PeriodicalIF":3.3,"publicationDate":"2026-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149228428","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Low-parasitic-resistance and fabrication-tolerant silicon microring modulators operating beyond 100 GHz. 工作频率超过100ghz的低抗寄生和耐加工硅微环调制器。

IF 3.3 2区物理与天体物理

Optics letters Pub Date : 2026-10-15 Epub Date: 2026-09-22 DOI: 10.1364/OL.614071

Yuxiang Yin, Kaihang Lu, Hao Chen, Baohua Wen, Xianyi Feng, YiHao Jian, Xuting Fan, King Hung Chiu, Yeyu Tong

{"title":"Low-parasitic-resistance and fabrication-tolerant silicon microring modulators operating beyond 100 GHz.","authors":"Yuxiang Yin, Kaihang Lu, Hao Chen, Baohua Wen, Xianyi Feng, YiHao Jian, Xuting Fan, King Hung Chiu, Yeyu Tong","doi":"10.1364/OL.614071","DOIUrl":"https://doi.org/10.1364/OL.614071","url":null,"abstract":"Silicon microring modulators (MRMs) are promising for compact, energy-efficient optical interconnects, yet their electro-optic bandwidth is constrained by the RC time constant, and their resonance wavelength is highly susceptible to fabrication variations. In this work, we present a carrier-depletion MRM that mitigates these issues by integrating an adiabatic transition with a widened low-parasitic-resistance region. The design extends the low-resistance cross-section over 61% of the cavity circumference, reducing the junction series resistance to 36.9 ohms, which is 35.9% lower than conventional designs. Across eight dies, the resonance wavelength spread is reduced from 3.58 to 1.07 nm. The modulator exhibits a measured 3-dB electro-optic bandwidth exceeding 100 GHz over a bias range of -1 to -5 V. It supports 144 Gbps NRZ and 224 Gbps PAM-4, with the latter demonstrating a bit error rate below the 7% hard-decision forward-error-correction threshold. Moreover, the device can operate in a self-bias mode at 0 V bias, achieving 128 Gbps NRZ with an estimated energy consumption of 0.861 fJ/bit, while depletion-mode operation consumes 8.878 fJ/bit.","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"51 20","pages":"5798-5801"},"PeriodicalIF":3.3,"publicationDate":"2026-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149228430","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Wideband photonic subsampling up to 110 GHz at a 1-GHz sampling rate using a thin-film lithium niobate modulator. 使用薄膜铌酸锂调制器，以1ghz的采样率进行高达110ghz的宽带光子子采样。

IF 3.3 2区物理与天体物理

Optics letters Pub Date : 2026-10-15 Epub Date: 2026-09-24 DOI: 10.1364/OL.608760

Fujian Yu, Ke Yin, Wei Dong, Tao Zhang, Guoning Zhang, Ziyang Zhu, Xiangai Cheng, Tian Jiang

{"title":"Wideband photonic subsampling up to 110 GHz at a 1-GHz sampling rate using a thin-film lithium niobate modulator.","authors":"Fujian Yu, Ke Yin, Wei Dong, Tao Zhang, Guoning Zhang, Ziyang Zhu, Xiangai Cheng, Tian Jiang","doi":"10.1364/OL.608760","DOIUrl":"https://doi.org/10.1364/OL.608760","url":null,"abstract":"The expansion of wireless communications toward carrier frequencies beyond 70 GHz confronts conventional superheterodyne receivers with fundamental challenges, particularly the performance degradation of high-frequency local oscillators (LOs) and mixers. Microwave photonics offers a promising solution for high-frequency signal processing by leveraging the intrinsic bandwidth and low timing jitter of optical devices. In this Letter, we present a photonic subsampling receiver that combines a femtosecond mode-locked laser (MLL) with a repetition rate of approximately 1 GHz and a thin-film lithium niobate (TFLN) modulator with a bandwidth of 110 GHz. Through photonic frequency mixing, optoelectronic conversion, and low-pass filtering, carriers up to 110 GHz are down-converted to a single 0-500 MHz intermediate frequency (IF) band. A commercial low-bandwidth analog-to-digital converter (ADC) then performs the digitization. The system achieves an effective number of bits (ENOB) of 4.1 at 109.99 GHz, with a timing jitter of 6.4 fs. Spurious suppression exceeds 30 dB across the entire measured band without any hardware reconfiguration. This architecture eliminates high-frequency electronic components, offering a potential front-end solution for future millimeter-wave communications.","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"51 20","pages":"5649-5652"},"PeriodicalIF":3.3,"publicationDate":"2026-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149228437","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Image-free ghost edge detection at ultra-low sampling rates via a Vision Mamba network. 通过视觉曼巴网络超低采样率的无图像鬼边缘检测。

IF 3.3 2区物理与天体物理

Optics letters Pub Date : 2026-10-15 Epub Date: 2026-09-25 DOI: 10.1364/OL.611712

Lin Cui, Qinggai Mi, Junwen Fang, Linjie Lyu, Haojin Li, Yu Hu, Tengfei Wu, Rui Wang

{"title":"Image-free ghost edge detection at ultra-low sampling rates via a Vision Mamba network.","authors":"Lin Cui, Qinggai Mi, Junwen Fang, Linjie Lyu, Haojin Li, Yu Hu, Tengfei Wu, Rui Wang","doi":"10.1364/OL.611712","DOIUrl":"https://doi.org/10.1364/OL.611712","url":null,"abstract":"Edge detection is essential for extracting structural boundaries in visual scenes, but conventional deep-learning-based methods remain sensitive to degradations in the input images and involve redundant full-image acquisition. Image-free ghost edge detection provides an efficient alternative by directly extracting edge information from bucket measurements, yet existing methods still require relatively high sampling rates to obtain reliable edge maps. Here, using a Vision Mamba network within the ghost edge detection framework, we achieve image-free edge detection directly from bucket measurements at ultra-low sampling rates. By employing joint optimization of illumination patterns and network parameters, the proposed method achieves reliable edge extraction at a sampling rate as low as 0.39%, as demonstrated by both simulations and optical experiments. Furthermore, the demonstrated robustness to measurement noise and qualitative edge-recovery results for selected visually distinct targets indicate the potential of the proposed method under challenging measurement conditions. We envision this image-free ghost edge-detection framework as a prospective platform for efficient task-oriented imaging under severe measurement constraints.","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"51 20","pages":"5874-5877"},"PeriodicalIF":3.3,"publicationDate":"2026-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149228388","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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