14 papers · ranked by Valyu relevance
Jeronimo Calderon-Gomez, Frantz Martinache, Nick Cvetojevic, Marc-Antoine Martinod + 13 more
Astrophotonics is a field that intends to meet the needs of next-generation instruments at a small footprint, low cost, and high stability, compared to bulk-optics-based alternatives. Much development effort is driven by the stringent requirements of direct detection and characterization of exoplanets. Our team works…
Jinwen Zhang, Haitao Zhang, Zhuoyi Yang, Xin Zhu
This paper presents a novel free-space optical Angle-of-Arrival (AOA) estimation method based on arrayed waveguide coherent mode decoding, aiming to surpass the inherent limitations of traditional AOA detection technologies, which face significant challenges in achieving miniaturization, low complexity, and high…
Lam Yen Thi Nguyen, Yu-Cheng Lin, Tzu-Yu Chiu, Shao-Jin Liao + 3 more
We propose and demonstrate one-dimensional (1-D) TiO2 dielectric grating structures that couple 793-nm wavelength light and two-dimensional (2-D) surface plasmon polaritons (SPPs) into guided 1-D SPPs supported by dielectric-loaded plasmonic waveguides. The 1-D grating structure consists of a central TiO2 stripe with a…
Marek Vlk, Carson G. Valdez, Anne R. Kroo, Charles Roques-Carmes + 3 more
We exploit a recently proposed concept for a programmable, mechanically robust, and tunable nonresonant silicon photonic integrated circuit filter and experimentally demonstrate it for tuning an erbium-doped fiber laser ring cavity. This filter integrates forward-only interferometer meshes together with a waveguide…
Xudong Gao, Chuanneng Luo, Mengxue Tao, Haijiang Yu + 4 more
This work presents a compact, low-crosstalk CWDM4 MUX/DEMUX utilizing cascaded multimode waveguide grating filters. The individual filters are designed with finite Gaussian apodization and positive dispersion, enabling strong unilateral sidelobe suppression while maintaining a minimum feature size compatible with UV…
Yong Li, Fei Wu, Huihui Li, Haitao Yang + 3 more
Augmented reality (AR) near-eye displays (NEDs) couple microdisplay image light to the human eye via integrated optical modules, enabling seamless virtual-real fusion. As core components that synergistically transmit and diffract light, diffractive waveguides are promising for next-generation AR NEDs but face two…
Seunghyun Lee, Byounghyo Lee, Haejun Chung
Waveguide-based augmented-reality (AR) displays offer compact, optical see-through form factors but remain limited by chromatic dispersion, ghosting from parasitic diffraction orders, distortion of the see-through scene, and a restricted eyebox. We present triple-function metasurface couplers designed using…
Ivan A. Kazakov, Ilona Popova, Arkady Shipulin
We propose a novel bio-inspired design principle for the perfectly vertical grating coupler. The main idea of our design is to introduce anisotropy to the grating stripe to direct the light to one side of the grating. This grating design is easy to manufacture, only requiring a single etching step, and it is designed…
Thomas J. G. Mikhail, Seif M. Swillam, Mohamed A. Swillam
This work presents a class of integrated photonic interferometers based on the Michelson architecture, implemented on a silicon-on-insulator platform operating at 1.5-1.6 \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy}…
Max Schittenhelm, Sebastian Häfner, Steffen Sauer, Stefanie Kroker
Photonic integrated circuits on the silicon-on-insulator (SOI) platform typically interface with free space via grating couplers, but scaling these to collimated beams with diameters beyond 100 $μ$m requires a fundamentally different regime of extremely weak, spatially distributed coupling. While such large-area…
Ziyang Xiong, Tong Lin, Liu Li, Hao Deng + 5 more
Integrated photonic circuits are foundational for versatile applications, where highperformance traveling-wave optical resonators are critical. Conventional whispering-gallery mode microresonators (WGMRs) confine light in closed-loop waveguide paths, thus inevitably occupy large footprints. Here, we report an…
Cheng-Yi Cheng, Kuan-Han Wu, Jiang-Qin Shi, Rohit Gupta + 1 more
We demonstrate a voltage-tunable plasmonic modulator that integrates a Bi2Se3 topological insulator thin film with a metal-dielectric plasmonic waveguide. The Bi2Se3 layer, transferred using a polymer-assisted method, enhances the modulation depth of the waveguide by enabling electrically driven carrier redistribution…
Jay Christopher, Liam M. Rooney, Charlie Butterworth, Gail Mcconnell + 1 more
We present a low-cost 3D printing method of fabricating optical quality lenslet arrays for integration in a multifocal structured illumination microscope (mSIM), achieving fluorescence imaging below the optical diffraction limit. We detail the design and manufacturing processes to produce high-quality 3D printed…
Lynn M. Sidor, Kathren P. Sage, Michelle M. Beaulieu, Dylan F. Wilson + 6 more
Recently, engineered bacterial cells have been shown to behave as optically-active photonic devices comparable to industrially fabricated microlenses^1^. Bacterial cells can be encapsulated within a layer of polysilicate through surface display of the sea sponge enzyme silicatein, which mineralizes a polysilicate…