Time derivatives via interconnected waveguides

Glyn MacDonald, Ross; Yakovlev, Alex; Pacheco-Peña, Victor

doi:10.1038/s41598-023-40046-3

Cited by 4 publications

(2 citation statements)

References 64 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…An optical waveguide is a physical structure designed to direct electromagnetic waves within the optical spectrum. Electromagnetic wave-based analogue computing is being become an attractive computing paradigm indicating the promise for low power, high-throughput, and parallel functions [62]. Common types of optical waveguides encompass optical fibre waveguides, transparent dielectric waveguides crafted from materials such as plastic and glass, liquid light guides, and liquid waveguides.…”

Section: Biological Lasersmentioning

confidence: 99%

Biological Photonic Devices Designed for the Purpose of Bio-Imaging with Bio-Diagnosis

Chuang,

Yu,

Hung

et al. 2023

Photonics

View full text Add to dashboard Cite

The rapid progress in the fields of biomedical and biological photonic sciences has given rise to a substantial demand for biological photonic structures capable of interacting with living systems. These structures are expected to facilitate precise manipulation of incident light at small scales, enabling the detection of sensitive biological signals and the achievement of highly accurate cell structural imaging. The concept of designing biological photonic devices using innate biomaterials, particularly natural entities such as cells, viruses, and organs, has gained prominence. These innovative devices offer the capability of multimodal light manipulation at specific sites, enhancing biological compatibility while minimizing disruptions to the delicate biological microenvironment. This article delves into recent advancements within the realm of biological photonic devices, with a dedicated focus on their applications in bio-imaging and -diagnosis. The central theme revolves around devices derived from biological entities possessing the requisite optical properties, biocompatibility, biofunctionality, and the ability to induce biological effects. These devices encompass a diverse range of optical functionalities, including light generation, transportation, and modulation, all of which play pivotal roles in bio-detection and imaging, thereby contributing notably to the advancement of these fields. The potential future directions and opportunities for the enhancement of biological photonic devices were outlined.

show abstract

Section: Biological Lasersmentioning

confidence: 99%

Biological Photonic Devices Designed for the Purpose of Bio-Imaging with Bio-Diagnosis

Chuang,

Yu,

Hung

et al. 2023

Photonics

View full text Add to dashboard Cite

show abstract

“…In this work, we present a simple method of calculating temporal derivatives of analogue incident signals using transmission line techniques [12]. We present the fundamental physical principles behind the operation of the proposed structures, demonstrating how they may be used to achieve arbitrary order differentiation, including fractional differentiation.…”

mentioning

confidence: 99%

Arbitrary order analogue differentiation using transmission line techniques

MacDonald,

Yakovlev,

Pacheco-Peña

2023

Proceedings of the XXXVth URSI General Assembly and Scientific Symposium – GASS 2023

View full text Add to dashboard Cite

Perfect splitting in rectangular-waveguide junctions for analog computing

Rogers,

Johnson-Richards,

Yakovlev

et al. 2024

Phys. Rev. Applied

View full text Add to dashboard Cite

It has recently been shown how computing operations such as high-speed switching, routing, and solving partial differential equations can be performed by exploiting perfect splitting of electromagnetic waves in networks of waveguides from microwaves to the optical regime. Here we propose a technique to achieve perfect splitting of electromagnetic waves using junctions of rectangular waveguides. The structure consists of air-filled rectangular waveguides interconnected at a junction. They are designed to have their cutoff frequency above the cutoff frequency of a further waveguides used as inputs. The proposed structure is studied theoretically with use of transmission-line models, and it is demonstrated that perfect splitting can occur at frequencies below the cutoff frequency of the interconnected waveguides (evanescent coupling). Numerical results are used to validate the designs, and it is demonstrated that the theoretical model fits the numerical data well. As examples of computing operations, it is shown how the proposed structure can be used to compare the amplitude of two incident signals (comparison operation) and also for routing of information to different output ports by exploiting the linear superposition of scattered waves excited at the junction of rectangular waveguides, opening new opportunities and possibilities for future exploration and exploitation of electromagnetic waves for high-speed computing. Published by the American Physical Society 2024

show abstract

Time derivatives via interconnected waveguides

Cited by 4 publications

References 64 publications

Biological Photonic Devices Designed for the Purpose of Bio-Imaging with Bio-Diagnosis

Biological Photonic Devices Designed for the Purpose of Bio-Imaging with Bio-Diagnosis

Arbitrary order analogue differentiation using transmission line techniques

Perfect splitting in rectangular-waveguide junctions for analog computing

Contact Info

Product

Resources

About