Mid‐Infrared Hyperuniform Disordered Solids Waveguide Devices with Morphology Engineering and Wall‐Network Regulation

Laser & Photonics Review, Год журнала: 2024, Номер unknown

Опубликована: Сен. 12, 2024

Abstract Hyperuniform disordered solids (HUDS) waveguides, a type of emerging artificial photonic bandgap (PBG) devices, are demonstrated to possess large, complete, and isotropic PBGs, being promising for developing applications in optoelectronics, nonlinear optics, sensing. However, optical losses HUDS waveguides usually limited by giant light scattering from the irregular distribution cells. Herein, waveguide devices with low large PBGs exploring morphology‐engineering wall‐network‐regulation method structures. The results show that proposed device can achieve 3.0 dB transmittance improvement 36‐µm‐long silicon waveguide. Based on structure, waveguide‐coupled HUDS‐cladding nanocavity is also quality factor ≈70 at 2.250 µm wavelengths theoretical refractive index sensitivity 446 nm RIU −1 . study opens an avenue develop intriguing on‐chip applications.

Язык: Английский

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Single-shot optical neural network

Science Advances, Год журнала: 2023, Номер 9(25)

Опубликована: Июнь 21, 2023

Analog optical and electronic hardware has emerged as a promising alternative to digital electronics improve the efficiency of deep neural networks (DNNs). However, previous work been limited in scalability (input vector length

Язык: Английский

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Ultra-Wideband Tunable Thin-Film Lithium-Niobate-on-Insulator Microwave Photonic Filter

ACS Photonics, Год журнала: 2025, Номер unknown

Опубликована: Март 5, 2025

To meet the growing demand for high-frequency and broadband wireless communications, extending microwave frequencies to millimeter-wave range is essential. Microwave photonic filters (MPFs), as key components in systems, are used select target signals reduce channel interference. However, achieving MPFs with a tuning beyond 40 GHz remains challenging due limited bandwidth of electro-optical devices optical filters. In this study, we demonstrate reconfigurable integrated MPF based on thin-film lithium-niobate-on-insulator platform. The achieves widest operational from 2 62 tunable frequency resolution 0.7 3 GHz. Additionally, filter enables selection Gbit/s data rates communication, offering practical scalable solution future applications.

Язык: Английский

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Programmable integrated photonic coherent matrix: Principle, configuring, and applications

Applied Physics Reviews, Год журнала: 2024, Номер 11(1)

Опубликована: Янв. 31, 2024

Every multi-input multi-output linear optical system can be deemed as a matrix multiplier that carries out desired transformation on the input information, such imaging, modulation, and computing. The strong programmability of has been explored proved to able bring more flexibility greater possibilities applications signal processing general digital analog Furthermore, burgeoning integrated photonics with advanced manufacturing light manipulating technology pave way for large-scale reconfigurable photonic coherent matrix. This paper reviews programmable in platform. First, theoretical basis optimizing methods three types (Mach–Zehnder interferometer mesh, multi-plane diffraction, crossbar array) are introduced. Next, we overview configuring method this their processing, neural network, logic operation, recurrent acceleration, quantum computing comprehensively reviewed. Finally, challenges opportunities discussed.

Язык: Английский

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Hybrid material integration for active photonic applications

APL Photonics, Год журнала: 2024, Номер 9(3)

Опубликована: Март 1, 2024

The huge development of micro-/nano-manufacturing techniques on different materials has greatly expanded the possibilities realizing on-chip multifunctional devices photonic integrated circuits. In recent years, we have witnessed technological advancements, such as active applications through hybrid integration. this Perspective, first summarize materials, integration technologies, and corresponding coupling in give technique prospects. We also introduce significant advances technologies for applications, laser sources, optical frequency combs, modulators, our views that are likely to develop rapidly. Finally, discuss challenges applications.

Язык: Английский

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Scalable On-Chip Optoelectronic Ising Machine Utilizing Thin-Film Lithium Niobate Photonics

ACS Photonics, Год журнала: 2024, Номер 11(4), С. 1703 - 1714

Опубликована: Март 15, 2024

The Ising machine (IM) has emerged as a promising tool for tackling nondeterministic polynomial-time hard combinatorial optimization problems in real-world applications. Among various types of IMs, optoelectronic IMs based on electro-optical (EO) modulators stand out an impressive platform computations. They offer simple and stable architecture, with the EO modulator providing natural inline nonlinear transfer function model. However, integrated have not been demonstrated until now, exploring large-scale computations within constraints digital hardware resources remains open challenge these systems. In this paper, IM thin-film lithium niobate (TFLN) photonic chip is presented, conjunction sparse matrix–vector multiplication algorithm embedded field-programmable gate array that optimizes resource utilization minimizes computational latency. This setup allows us to solve multiple MAX-CUT up 2048 spins achieve remarkably low iteration latency 1.78 μs. To further address posed by devices when larger-scale problems, we extend application TFLN yet another new scheme which single, compact on-chip concurrently performs operations linear transformation. demonstrates capability involving 16,384 spins, which, best our knowledge, are largest-scale solved IM, highlighting its potential overcome limitations. TFLN-based provide solution high scalability potentially practical applications addressing complex problems.

Язык: Английский

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Experimental post-selection loophole-free time-bin and energy-time nonlocality with integrated photonics

Optica, Год журнала: 2024, Номер 11(4), С. 498 - 498

Опубликована: Фев. 5, 2024

Time-bin (TB) and energy-time (ET) entanglements are crucial resources for long-distance quantum information processing. However, their standard implementations suffer from the so-called post-selection loophole that allows classical simulation thus prevents advantage. The has been addressed in proof-of-principle experiments. An open problem though is to close it real-life applications based on integrated technologies. This especially important since, so far, all sources of TB ET loophole. Here, we report loophole-free certification or entanglement technologies, by implementing a silicon nitride chip “hug” scheme [ Phys. Rev. Lett. 102 , 040401 ( 2009 ) PRLTAO 0031-9007 10.1103/PhysRevLett.102.040401 ] certifying genuine through violation Bell inequality.

Язык: Английский

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Design and Analysis of Compact High–Performance Lithium–Niobate Electro–Optic Modulator Based on a Racetrack Resonator

Photonics, Год журнала: 2025, Номер 12(1), С. 85 - 85

Опубликована: Янв. 17, 2025

With the ever-growing demand for high-speed optical communications, microwave photonics, and quantum key distribution systems, compact electro-optic (EO) modulators with high extinction ratios, large bandwidth, tuning efficiency are urgently pursued. However, most integrated lithium–niobate (LN) cannot achieve these performances simultaneously. In this paper, we propose an improved theoretical model of a chip-scale microring modulator (EO-MRM) based on X-cut lithium–niobate-on-insulator (LNOI) hybrid architecture consisting 180-degree Euler bend in coupling region, double-layer metal electrode structure, ground–signal–signal–ground (G-S-S-G) configuration, which can realize highly comprehensive performance footprint. After parameter optimization, designed EO-MRM exhibited ratio 38 dB. Compared to structure without bends, increase was 35 It also had modulation bandwidth 29 GHz tunability 8.24 pm/V when straight waveguide length 100 μm. At same time, proposed device footprint 1.92 × 104 μm2. The MRM provides efficient solution communication systems is helpful fabrication high-performance multifunctional photonic devices.

Язык: Английский

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High-Speed Low-Complexity Optical PAM Links With a High-Slope-Efficiency Optical Modulator: Analysis and Demonstration

Journal of Lightwave Technology, Год журнала: 2024, Номер 42(10), С. 3554 - 3562

Опубликована: Фев. 19, 2024

Achieving high data rate with simple system configuration and low power consumption is of great interest in short-reach intensity-modulation direct-detection (IM-DD) fiber links for future datacenter networks, business local area networks so forth. For external modulation-based IM-DD, recently remarkable modulator performance has been achieved terms 3dB bandwidth, exploiting different materials/platforms. However, due to the relatively-high RF-to-RF (or end-to-end) signal loss, optical amplifiers (OA) and/or RF (RFA) were typically needed IM-DD links, which increases complexity dissipation. In this work, we present a more comprehensive figure merit (FoM) (and link) design, namely "slope efficiency (SLE)", takes into account not only bandwidth but also half-wave voltage RF/optical waveguide losses, can provide guiding principle design toward lower loss. With high-SLE modulator, both OA RFA be omitted even when supporting broadband signals CMOS-level driving voltages. We theoretically investigate impact modulators technology SLE on pulse amplitude modulation (PAM) link. Next, report series PAM transmission experiments Lithium Niobate intensity prototype, enables sub-1 V_pp driving, up-to-432Gb/s over up-to-600m single-mode C-band OA&RFA-free reception digital processing (DSP) complexity. instance, 384Gb/s PAM8 300m, transmitter was DSP-free while symbol-spaced decision-feedback equalizer (DFE) 61 feedforward taps 1 feedback tap sufficient receiver considering 16.7% hard-decision (HD)-FEC. Furthermore, experimentally show that supports ultra-wide bands (O-, S-, C- L-band).

Язык: Английский

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Integrated photonic 3D tensor processing engine

Research Square (Research Square), Год журнала: 2025, Номер unknown

Опубликована: Янв. 13, 2025

Optical computing leverages high bandwidth, low latency, and power efficiency, which is considered as one of the most effective solutions for accelerating deep learning tasks. However, mainstream photonic hardware accelerators are primarily optimized two-dimensional (2D) matrix-vector multiplications (MVMs). To implement three-dimensional (3D) convolutional neural networks (CNNs), high-order tensors must be reshaped, duplicated, cached in electrical domain according to size before computation, leading extra memory usage time overheads. Additionally, synchronization across multiple channels depends on external electronic clocks, increases complexity system. In this work, we propose an integrated 3D tensor processing engine (3D-TPE) based interweaving time, wavelength, space. Data caching, realized optical domain, reducing usage, simplifying caching achieved with tunable delay line chip supporting versatile clock frequencies up 200 GHz, accomplished a dual-coupled micro-ring resonators (MRRs) crossbar 3-dB passband width 50 GHz. We verify capabilities 3D-TPE at ranging from 10 GHz 30 perform proof-of-concept experiment LiDAR point cloud image recognition task operating 20 achieving accuracy 97.06%. The proposed anticipated facilitate convolutions, playing important role autonomous driving, healthcare, video analytics, virtual reality, etc.

Язык: Английский

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