SPIE/COS Photonics Asia最新文献_第7页

Computing the causal impulse responses of passive photonic integrated circuits by extrapolation 通过外推法计算无源光子集成电路的因果脉冲响应

SPIE/COS Photonics Asia Pub Date : 2023-11-28 DOI: 10.1117/12.2687100

Xiaoxue Jiang, Jiajun Feng, Yinghao Ye

引用次数: 0

Research on lightweight synchronization recognition algorithms for multiple acoustic sources in a photoacoustic sensor system based on Sagnac interference 基于萨格纳克干扰的光声传感器系统中多声源轻量级同步识别算法研究

SPIE/COS Photonics Asia Pub Date : 2023-11-28 DOI: 10.1117/12.2687076

Xinyu Zheng, Ruixi Tang, Songxiang Liu, Ning Wang, Jie Zhang, Yong Zhu, Jianjun Chen

引用次数: 0

Advancing phase recovery in time-stretch computational cell imaging 推进时间拉伸计算细胞成像中的相位恢复

SPIE/COS Photonics Asia Pub Date : 2023-11-28 DOI: 10.1117/12.2686695

Yueqin Li, Jun Qin, Jian Sun, Min Miao

引用次数: 0

Precise surface form measurements of off-axis aspheric freeform optics 精确测量离轴非球面自由曲面光学器件的表面形状

SPIE/COS Photonics Asia Pub Date : 2023-11-28 DOI: 10.1117/12.2686791

Zexiao Li, Xiaodong Zhang, Yang Yu

{"title":"Precise surface form measurements of off-axis aspheric freeform optics","authors":"Zexiao Li, Xiaodong Zhang, Yang Yu","doi":"10.1117/12.2686791","DOIUrl":"https://doi.org/10.1117/12.2686791","url":null,"abstract":"Freeform optical components are increasingly demanded by optical manufacturers and researchers, and are always a challenging topic for metrologists. Form errors of the freeform surfaces resulting from the manufacturing process are critical, in terms of the functionality and reliability of the freeform optics. This paper presents two methodology case studies of off-axis aspheric optics using contact profilometry and non-contact scanning point interferometry. The contact method is accomplished by use of an ultra-low noise measurement platform, combined with a patented phase grating interferometry (PGI) technology and specially developed algorithms for calibration and analysis. The study shows the capability of the proposed method for high tangential slope freeform measurement. This slope measurement capability of PGI Freeform, together with its large gauge range, enables 3D form measurements for most freeform surfaces. However, for some optical surfaces non-contact measurement is preferred due to the possible surface damage caused by the stylus force of contact method. Non-contact scanning metrology is based on a patented multi-wavelength interferometry (MWLI) technology. It provides high density 3D data in short measurement times at a highly reproducible form measurement accuracy. The long-range absolute measurement capability of the MWLI sensor, together with its ultraprecision metrology platform and improved calibration routine through which the sensor accurately follows the designed shape of optical surfaces, enables precise 3D freeform surface measurements within its tangential slope measurement range.","PeriodicalId":149506,"journal":{"name":"SPIE/COS Photonics Asia","volume":"61 1","pages":"127650N - 127650N-12"},"PeriodicalIF":0.0,"publicationDate":"2023-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139220270","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Narrow-linewidth circular dichroism in asymmetric double split ring resonator metasurface 不对称双分裂环谐振器元表面中的窄线宽圆二色性

SPIE/COS Photonics Asia Pub Date : 2023-11-28 DOI: 10.1117/12.2686499

Liangkun Dai, Chengchen Bi, Lu Chen, Zhaomin Rong, Wu Fei, Xiangyun Jiang, Chan Huang, Jigang Hu

引用次数: 0

Polarization dynamics of ultra-narrow modes generated in random fiber lasers 随机光纤激光器中产生的超窄模式的偏振动力学

SPIE/COS Photonics Asia Pub Date : 2023-11-28 DOI: 10.1117/12.2687600

I. Vatnik, A. Kirik, Oleg A. Gorbunov, Dmitry V. Churkin

引用次数: 0

An electrically tunable metasurface for continuous phase modulation at visible wavelength based on indium tin oxide 基于氧化铟锡的用于可见光波长连续相位调制的电可调元表面

SPIE/COS Photonics Asia Pub Date : 2023-11-28 DOI: 10.1117/12.2686621

Yu Wang, Huiyu Li, Guangwei Chen

{"title":"An electrically tunable metasurface for continuous phase modulation at visible wavelength based on indium tin oxide","authors":"Yu Wang, Huiyu Li, Guangwei Chen","doi":"10.1117/12.2686621","DOIUrl":"https://doi.org/10.1117/12.2686621","url":null,"abstract":"Electrically tunable metasurfaces have great potential for flexible response and high precision in wavefront control, making them highly applicable. However, there is currently a scarcity of electrically tunable metasurfaces working at visible wavelengths. An electrically tunable transmission metasurface working at 660nm was proposed in this paper. The metasurface integrates a transparent conductive oxide material ITO as a tunable electro-optical material. The design scheme of the electrically tunable metasurface is based on the classical Drude model. In the electric field, the variation of carrier concentration in the accumulation layer induced by bias voltage can enhance the nonlinear optical response and improve light field modulation effect. The proposed metasurface is structured with four symmetrically distributed rectangular patches nested with a circular ring. In addition, the phase modulation capability of this model has been theoretically analyzed. With a bias voltage of -4.9V~20V, a continuous transmission phase delay between 0°~191.45° at a wavelength of 660nm can be achieved. The proposal of the electrically tunable metasurface structure establishes a new means for transmitted beam wavefront shaping and modulation, and in the future, the metasurfaces designed with a continuous phase modulation at visible wavelength will suggest more applications in naked-eye 3D display, holographic imaging, and other fields.","PeriodicalId":149506,"journal":{"name":"SPIE/COS Photonics Asia","volume":"21 1","pages":"127650V - 127650V-11"},"PeriodicalIF":0.0,"publicationDate":"2023-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139218129","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

On-chip beam steering in gradient-index waveguide arrays 梯度指数波导阵列中的片上光束转向

SPIE/COS Photonics Asia Pub Date : 2023-11-28 DOI: 10.1117/12.2687110

Yunfei Niu, Qingyang Du, Shaoliang Yu, Tao Chu

{"title":"On-chip beam steering in gradient-index waveguide arrays","authors":"Yunfei Niu, Qingyang Du, Shaoliang Yu, Tao Chu","doi":"10.1117/12.2687110","DOIUrl":"https://doi.org/10.1117/12.2687110","url":null,"abstract":"The ability to manipulate light propagation is crucial for the development of optical communication and information processing systems. Photonic integrated circuits have gained significant attention due to their ability to integrate a large volume of components and operate at high speeds, making them ideal for handling the increasing data capacity and rate. In this study, we proposed and experimentally demonstrated a novel method for beam steering using waveguide arrays with specific distributed spacing profiles. By analyzing the diffraction and coherence properties, we discovered that a single waveguide array can perform imaging and phase transformation functions, which are typically achieved using optical lenses. To further enhance this capability, we fabricated corresponding devices on a silicon nitride waveguide platform and investigated the light propagation process through the arrayed waveguide. We successfully achieved various forms of beam steering, including focusing, expansion, and collimation. This beam control method holds great potential for on-chip optical routing, ranging, sensing, and other applications. It offers high integration density and scalability, making it a promising solution for the development of advanced optical systems.","PeriodicalId":149506,"journal":{"name":"SPIE/COS Photonics Asia","volume":"26 1","pages":"127640S - 127640S-3"},"PeriodicalIF":0.0,"publicationDate":"2023-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139220912","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Thermal mode decomposition method for microresonator thermal parameters estimation 用于估算微谐振器热参数的热模式分解法

SPIE/COS Photonics Asia Pub Date : 2023-11-28 DOI: 10.1117/12.2686746

V. I. Pavlov, Nikita Kondratyev, Artem Shitikov, Valery E. Lobanov

引用次数: 0

Visible light communication in III-nitride quantum-well diode III 氮化物量子阱二极管中的可见光通信

SPIE/COS Photonics Asia Pub Date : 2023-11-28 DOI: 10.1117/12.2687351

Binju Wang, Jianwei Fu, Yongjin Wang

引用次数: 0