Designing Dirac vortex topological photonic crystal fibres

Asymmetric and symmetric approaches to an SPSM. (a) Dominant approach to split the degenerate fundamental modes by structural asymmetry. (b) Proposed Bragg fibre design to guide light by a singly degenerate mode with lower loss than other modes. (c) The topological PCF provides singlet mid-gap dispersion for a broadband SPSM. Credit: Light: Science & Applications, […]

A photonic crystal coupled to a transmission line via an artificial atom

The device. (a) Schematics of the device. The artificial atom is simultaneously coupled to electromagnetic and acoustic systems. Microwave photons excite an artificial atom (qubit). The atom in turn generates phonons into the phononic crystal. (b) Schematic representation of the sample. Electromagnetic waves propagate through a coplanar transmission line and interact with an artificial atom […]

Researchers describe a new beam scanning device utilizing ‘photonic crystals

A seemingly random line of photonic crystals allows for laser beams to be emitted in various angles, allowing for more versatile and compact LiDAR technology Credit: Kyoto University/Noda Lab Scanning lasers—from barcode scanners at the supermarket to cameras on newer smartphones—are an indispensable part of our daily lives, relying on lasers and detectors for pinpoint […]

Dynamic photonic barcodes record energy transfer at the biointerface

Dynamic photonic barcodes enable molecular detection. Credit: Zhou et al., doi 10.1117/1.AP.2.6.066002 Optical barcodes enable detection and tracking via unique spectral fingerprints. They’ve been widely applied in areas ranging from multiplexed bioassays and cell tagging to anticounterfeiting and security. Yu-Cheng Chen of the Bio+Intelligent Photonics Laboratory at Nanyang Technological University notes that the concept of […]

Cavity-enhanced radiative energy transfer converts biomolecular information from a single droplet into trillions of distinctive photonic barcodes — ScienceDaily

Optical barcodes enable detection and tracking via unique spectral fingerprints. They’ve been widely applied in areas ranging from multiplexed bioassays and cell tagging to anticounterfeiting and security. Yu-Cheng Chen of the Bio+Intelligent Photonics Laboratory at Nanyang Technological University notes that the concept of optical barcodes typically refers to a fixed spectral pattern corresponding to a […]