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Article
Open AccessFiber-Optic Biosensors for Cancer Theranostics: From in Vitro to in Vivo
Cancer has been one of the most serious diseases, resulting in more than 10 million deaths every year. Fiber-optic sensors have great potential for diagnosing and treating cancer due to their flexibility, prec...
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Article
Open AccessFree-moving-state microscopic imaging of cerebral oxygenation and hemodynamics with a photoacoustic fiberscope
We report the development of a head-mounted photoacoustic fiberscope for cerebral imaging in a freely behaving mouse. The 4.5-gram imaging probe has a 9-µm lateral resolution and 0.2-Hz frame rate over a 1.2-m...
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Article
Open AccessTera-sample-per-second arbitrary waveform generation in a synthetic dimension
Synthetic dimension opens new horizons in quantum physics and topological photonics by enabling new dimensions for field and particle manipulations. The most appealing property of the photonic synthetic dimens...
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Article
Fiber-Optic Microfiber: Tracking Activity Enhancement and Suppression of Heterogeneous Photocatalysts
Obtaining detailed insight into the photocatalytic performance of heterogeneous photocatalytic materials, is important for evaluating material properties as well as guiding material design. However, capture of...
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Article
Open AccessOptical-resolution functional gastrointestinal photoacoustic endoscopy based on optical heterodyne detection of ultrasound
Photoacoustic endoscopy shows promise in the detection of gastrointestinal cancer, inflammation, and other lesions. High-resolution endoscopic imaging of the hemodynamic response necessitates a small-sized, hi...
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Article
Synthetic helical dichroism for six-dimensional optical orbital angular momentum multiplexing
Optical multiplexing1–11 by creating orthogonal data channels has offered an unparalleled approach for information encoding with substantially improved density and security. Despite the fact that the orbital angu...
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Article
Efficiently Writing Bragg Grating in High-Birefringence Elliptical Microfiber for Label-Free Immunosensing with Temperature Compensation
Immunosensor is a powerful tool in healthcare and clinic, food and drug industry, and environmental protection. Label-free fiber-optic immunosensors have shown a myriad of advantages, such as high sensitivity,...
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Article
Open AccessHigh spatiotemporal resolution optoacoustic sensing with photothermally induced acoustic vibrations in optical fibres
Optoacoustic vibrations in optical fibres have enabled spatially resolved sensing, but the weak electrostrictive force hinders their application. Here, we introduce photothermally induced acoustic vibrations (...
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Article
Open AccessImprovement in resolution of fiber-laser photoacoustic tomography based on a virtual-point concept
In this study, a virtual-point concept was introduced into fiber-laser photoacoustic tomography to improve the elevational image resolution. The flexible fiber laser was bent into an arc shape to conform to th...
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Article
Open AccessUltra-sensitive nanometric flat laser prints for binocular stereoscopic image
Two-dimensional (2D) transition metal dichalcogenides (TMDs) with tantalizing layer-dependent electronic and optical properties have emerged as a paradigm for integrated flat opto-electronic devices, but their...
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Article
Open AccessArbitrary polarization conversion dichroism metasurfaces for all-in-one full Poincaré sphere polarizers
The control of polarization, an essential property of light, is of broad scientific and technological interest. Polarizers are indispensable optical elements for direct polarization generation. However, arbitr...
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Article
Open AccessDual-shot dynamics and ultimate frequency of all-optical magnetic recording on GdFeCo
Although photonics presents the fastest and most energy-efficient method of data transfer, magnetism still offers the cheapest and most natural way to store data. The ultrafast and energy-efficient optical con...
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Article
Open Accessπ-phase modulated monolayer supercritical lens
The emerging monolayer transition metal dichalcogenides have provided an unprecedented material platform for miniaturized opto-electronic devices with integrated functionalities. Although excitonic light–matte...
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Article
Open AccessMiniature Fiber-Optic Magnetic Field Sensor Based on Ampere Force and Fiber Laser
A compact fiber-optic magnetic field sensor is proposed by packaging an orthogonal dual-frequency fiber grating laser and a copper wire with alternating electrical current together inside epoxy resin. The alte...
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Article
Open AccessPolarimetric parity-time symmetry in a photonic system
Parity-time (PT) symmetry has attracted intensive research interest in recent years. PT symmetry is conventionally implemented between two spatially distributed subspaces with identical localized eigenfrequenc...
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Article
Open AccessParity-time symmetry in wavelength space within a single spatial resonator
We show a parity-time (PT) symmetric microwave photonic system in the optical wavelength space within a single spatial resonator, in which the gain and loss modes can perfectly overlay spatially but are distin...
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Article
Open AccessAnapole mediated giant photothermal nonlinearity in nanostructured silicon
Featured with a plethora of electric and magnetic Mie resonances, high index dielectric nanostructures offer a versatile platform to concentrate light-matter interactions at the nanoscale. By integrating uniqu...
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Article
Open AccessBrillouin Scattering Spectrum Analysis Based on Auto-Regressive Spectral Estimation
Auto-regressive (AR) spectral estimation technology is proposed to analyze the Brillouin scattering spectrum in Brillouin optical time-domain refelectometry. It shows that AR based method can reliably estimate...
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Article
Open AccessLow-frequency vibration measurement by a dual-frequency DBR fiber laser
A dual-frequency distributed Bragg reflector (DBR) fiber laser based sensor is demonstrated for low-frequency vibration measurement through the Doppler effect. The response of the proposed sensor is quite line...
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Article
Open AccessFiber-Laser-Based Ultrasound Sensor for Photoacoustic Imaging
Photoacoustic imaging, especially for intravascular and endoscopic applications, requires ultrasound probes with miniature size and high sensitivity. In this paper, we present a new photoacoustic sensor based ...
