Lighting the Way Forward: The Bright Future of Photonic Integrated Circuits

Sensors International, Год журнала: 2025, Номер unknown, С. 100326 - 100326

Опубликована: Янв. 1, 2025

Язык: Английский

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Planar peristrophic multiplexing metasurfaces

Opto-Electronic Advances, Год журнала: 2022, Номер 6(8), С. 220141 - 220141

Опубликована: Дек. 28, 2022

As a promising counterpart of two-dimensional metamaterials, metasurfaces enable to arbitrarily control the wavefront light at subwavelength scale and hold promise for planar holography applicable multiplexing devices. Nevertheless, degrees freedom (DoF) orthogonally multiplex data have been almost exhausted. Compared with state-of-the-art methods that extensively employ orthogonal basis such as wavelength, polarization or orbital angular momentum, we propose an unprecedented method peristrophic by combining spatial frequency orthogonality detour phase principle. The relationship between incident locally shifted building blocks can be regarded additional DoF. We experimentally demonstrate viability multiplexed holograms. Moreover, this newly-explored is compatible conventional DoFs. Our findings will contribute development provide novel solution nanophotonics, large-capacity chip-scale devices highly integrated communication.

Язык: Английский

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Optical Fibre-Based Sensors—An Assessment of Current Innovations

Biosensors, Год журнала: 2023, Номер 13(9), С. 835 - 835

Опубликована: Авг. 22, 2023

Optical fibre sensors are an essential subset of optical technology, designed specifically for sensing and measuring several physical parameters. These offer unique advantages over traditional sensors, making them gradually more valuable in a wide range applications. They can detect extremely small variations the parameters they to measure, such as analytes case biosensing. This high sensitivity allows subtle temperature, pressure, strain, refractive index analytes, vibration, other environmental factors with exceptional accuracy. Moreover, these enable remote capabilities. Since light signals used carry information, elements be placed at distant or inaccessible sites still communicate data back central monitoring system without signal degradation. In recent times, different attractive configurations approaches have been proposed enhance fibre-based sensor briefly explained this review. However, we believe that choice configuration should designated based on specific application. As continue evolve improve, will play increasingly vital role critical control applications across various industries.

Язык: Английский

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Miniaturized Design of a 1 × 2 Plasmonic Demultiplexer Based on Metal–Insulator-Metal Waveguide for Telecommunication Wavelengths

Plasmonics, Год журнала: 2023, Номер 18(2), С. 635 - 641

Опубликована: Янв. 31, 2023

Abstract In this work, a numerical analysis of compact 1 × 2 plasmonic demultiplexer based on metal–insulator-metal (MIM) waveguide is presented. Two hollow circular cavities are side coupled to the bus both sides. The designed in such way that they resonate at working wavelength 1310 nm and 1550 nm. mechanism light coupling an MIM has not been considered previous studies. Therefore, silicon tapered mode converter integrated with for efficient conversion dielectric mode. footprint device 6 μm μm. crosstalk P1 P2 ~ 14.07 dB 13.67 transmission nm, respectively.

Язык: Английский

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Ultra-high sensitivity surface plasmon U-channel photonic crystal fiber for hemoglobin sensing

Sensors and Actuators A Physical, Год журнала: 2024, Номер 366, С. 115053 - 115053

Опубликована: Янв. 19, 2024

Язык: Английский

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Low-loss chip-scale programmable silicon photonic processor

Opto-Electronic Advances, Год журнала: 2022, Номер 6(3), С. 220030 - 220030

Опубликована: Окт. 28, 2022

Chip-scale programmable optical signal processors are often used to flexibly manipulate the signals for satisfying demands in various applications, such as lidar, radar, and artificial intelligence. Silicon photonics has unique advantages of ultra-high integration density well CMOS compatibility, thus makes it possible develop large-scale processors. The challenge is high silicon waveguides propagation losses calibration complexity all tuning elements due random phase errors. In this paper, we propose demonstrate a photonic processor first time by introducing low-loss multimode waveguide spirals low-random-phase-error Mach-Zehnder switches. present chip-scale comprises 1×4 variable power splitter based on cascaded couplers (MZCs), four Ge/Si photodetectors, channels thermally-tunable delaylines. Each channel consists continuously-tuning shifter spiral with micro-heater digitally-tuning delayline realized waveguide-spiral delaylines MZSs 5.68 ps time-delay step. Particularly, these here designed be wide 2 µm, enabling an ultralow loss 0.28 dB/cm. Meanwhile, MZCs 2-µm-wide arm waveguides, errors MZC/MZS arms negligible, which case MZSs/MZCs becomes easy furthermore consumption compensating can reduced greatly. Finally, demonstrated successfully verify number distinctively different functionalities, including tunable time-delay, microwave beamforming, arbitrary filtering, waveform generation.

Язык: Английский

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Towards integrated mode-division demultiplexing spectrometer by deep learning

Opto-Electronic Science, Год журнала: 2022, Номер 1(11), С. 220012 - 220012

Опубликована: Янв. 1, 2022

Miniaturized spectrometers have been widely researched in recent years, but few studies are conducted with on-chip multimode schemes for mode-division multiplexing (MDM) systems. Here we propose an ultracompact demultiplexing spectrometer that includes branched waveguide structures and graphene-based photodetectors, which realizes simultaneously spectral dispersing light fields detecting. In the bandwidth of 1500–1600 nm, designed achieves single-mode resolution 7 nm each mode TE₁–TE₄ by Tikhonov regularization optimization. Empowered deep learning algorithms, 15-nm parallel reconstruction is achieved a single-shot measurement. Moreover, stacking response to single spectra, 3-nm realized. This design reveals effective solution MDM spectroscopy, may find applications sensing, interconnecting processing.

Язык: Английский

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All-optical temporal logic gates in localized exciton polaritons

Nature Photonics, Год журнала: 2024, Номер unknown

Опубликована: Авг. 2, 2024

Abstract Exciton polaritons—quasi-particle excitations consisting of strongly coupled photons and excitons—present fascinating possibilities for photonic circuits, owing to their strong nonlinearity, ultrafast reaction times ability form macroscopic quantum states at room temperature via non-equilibrium condensation. Past implementations transistors logic gates with exciton polaritons have been mostly realized using the spatial propagation polariton fluids, which place high demands on fabrication microcavities typically require complex manipulations. In this work we implemented full set logical gate functionalities (that is, temporal AND, OR NOT gates) in localized temperature, basis precisely controlling interplay between condensate reservoir dynamics, a two-pulse excitation scheme. The dynamics intrinsically covers cascadability required by operations, enabling efficient information processing without need flow. demonstrate advantages switching, universality simplified compatibility other dimensional controls, showing great potential building networks light–matter systems.

Язык: Английский

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Self-polarized RGB device realized by semipolar micro-LEDs and perovskite-in-polymer films for backlight applications

Opto-Electronic Advances, Год журнала: 2024, Номер 7(3), С. 230210 - 230210

Опубликована: Янв. 1, 2024

In backlighting systems for liquid crystal displays, conventional red, green, and blue (RGB) light sources that lack polarization properties can result in a significant optical loss of up to 50% when passing through polarizer. To address this inefficiency optimize energy utilization, study presents high-performance device designed RGB polarized emissions. The employs an array semipolar µLEDs with inherent capabilities, coupled mechanically stretched films green-emitting CsPbBr₃ nanorods red-emitting CsPbI₃-Cs₄PbI₆ hybrid nanocrystals. the polymer film offer intrinsic emission, while aligned-wire structures formed by stable nanocrystals contribute substantial anisotropic emissions, due their high dielectric constant. resulting achieved degrees 0.26, 0.48, 0.38, respectively, exhibited broad color gamut, reaching 137.2% NTSC standard 102.5% Rec. 2020 standard. When compared utilizing c-plane LEDs excitation, current approach increased intensity transmitted polarizer 73.6%. This novel fabrication devices containing components holds considerable promise advancing next-generation display technologies.

Язык: Английский

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Non-orthogonal optical multiplexing empowered by deep learning

Nature Communications, Год журнала: 2024, Номер 15(1)

Опубликована: Фев. 21, 2024

Orthogonality among channels is a canonical basis for optical multiplexing featured with division multiplexing, which substantially reduce the complexity of signal post-processing in demultiplexing. However, it inevitably imposes an upper limit capacity multiplexing. Herein, we report on non-orthogonal over multimode fiber (MMF) leveraged by deep neural network, termed speckle light field retrieval network (SLRnet), where can learn complicated mapping relation between multiple input encoded information and their corresponding single intensity output. As proof-of-principle experimental demonstration, shown that SLRnet effectively solve ill-posed problem MMF, signals mediated same polarization, wavelength spatial position be explicitly retrieved utilizing single-shot output fidelity as high ~ 98%. Our results resemble important step harnessing

Язык: Английский

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