Mid-infrared integrated electro-optic modulators: a review
Integrated mid-infrared (MIR) photonics have various applications in optical fiber communication, spectral detection and identification, free-space communication, and light detection and ranging, etc. The MIR electro-optic (EO) modulator, which is one of the …
High-fidelity optical fiber microphone based on graphene oxide and Au nanocoating
A high-fidelity optical fiber microphone (HF-OFM) with hybrid frequency and fast response is theoretically and experimentally demonstrated by the nanofabrication techniques for real-time communication, which consists of a graphene oxide (GO) film, an Au …
Balancing detectivity and sensitivity of plasmonic sensors with surface lattice resonance
Resonators are at the core of optical sensors enhancing light–analyte interaction and leading to higher sensitivities. Maximizing the sensitivity is an obvious objective function for the resonator design. However, high sensitivity does not guarantee …
Switchable dual-mode nanolaser: mastering emission and invisibility through phase transition materials
The principle of detailed balance states that objects efficiently emitting radiation at a specific wavelength also efficiently absorb radiation at the same wavelength. This principle presents challenges for the design and performance of photonic devices, …
On-chip wavefront shaping in spacing-varied waveguide arrays
The ability to manipulate light propagation sets the foundations for optical communication and information processing systems. With the ever-growing data capacity and data rate, photonic integrated circuits have attracted increasing attentions of researchers …
Twofold optical display and encryption of binary and grayscale images with a wavelength-multiplexed metasurface
The remarkable capability in regulating light polarization or amplitude at the nanoscale makes metasurface a leading candidate in high-resolution image display and optical encryption. Diverse binary or grayscale meta-images were previously shown concealed in …
Direct tuning of soliton detuning in an ultrahigh-Q MgF_2 crystalline resonator
The dissipative Kerr soliton combs based on microresonators have attracted wide attention due to their high coherence and on-chip integration. Meanwhile, the soliton microcombs have shown broad applications in coherent communication, on-chip low-noise …
Inverse design of all-dielectric metasurfaces with accidental bound states in the continuum
Metasurfaces with bound states in the continuum (BICs) have proven to be a powerful platform for drastically enhancing light–matter interactions, improving biosensing, and precisely manipulating near- and far-fields. However, engineering metasurfaces to …
Gigantic blue shift of two-photon–induced photoluminescence of interpenetrated metal–organic framework (MOF)
As an important means of modern science and technology, multiphoton fluorescence plays an essential role in high-resolution imaging, photochemistry, micro- and nano-processing and clinical diagnosis. Multiphoton fluorescence usually shares the same radiative …
Feature-enhanced X-ray imaging using fused neural network strategy with designable metasurface
Scintillation-based X-ray imaging can provide convenient visual observation of absorption contrast by standard digital cameras, which is critical in a variety of science and engineering disciplines. More efficient scintillators and electronic postprocessing …
Topological degeneracy breaking in synthetic frequency lattice by Floquet engineering
Synthetic frequency dimensions provide important opportunities to investigate novel topological phenomena. Previously, many theoretical proposals have been studied and relevant experiments have been performed very recently. However, all these works consider …
Coupled harmonic oscillators model with two connected point masses for application in photo-induced force microscopy
To comprehensively describe the operation of photo-induced force microscopy (PiFM), we have developed a model based on coupled harmonic oscillators. This model features two point masses connected by massless elastic wires, offering greater intuitiveness …
Theory of nonlinear corner states in photonic fractal lattices
We study linear and nonlinear higher-order topological insulators (HOTIs) based on waveguide arrays arranged into Sierpinski gasket and Sierpinski carpet structures, both of which have non-integer effective Hausdorff dimensionality. Such fractal structures …
Dual channel transformation of scalar and vector terahertz beams along the optical path based on dielectric metasurface
The research on terahertz wave manipulation based on metasurfaces has gradually deepened, and the number of functions or electromagnetic control dimensions in a single device is constantly increasing. For the spatial dimension of terahertz field regulation, …