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Photonic metasurfaces are ultrathin electromagnetic wave-molding metamaterials providing the missing link for the integration of nanophotonic chips with nanoelectronic circuits. An extra twist in this field originates from spin-optical…

In this paper we propose and investigate the performance of a multi-channel scheduling algorithm based on the well-known deficit round-robin (DRR), which we call multi-channel DRR (MCDRR). We extend the original DRR to the case of multiple…

Networking and Internet Architecture · Computer Science 2013-08-26 Mithileysh Sathiyanarayanan , Kyeong Soo Kim

A method for designing physically path length matched, three-dimensional photonic circuits is described. We focus specifically on the case where all the waveguides are uniquely routed from the input to output; a problem which has not been…

Instrumentation and Methods for Astrophysics · Physics 2015-06-11 Ned Charles , Nemanja Jovanovic , Simon Gross , Paul Stewart , Barnaby Norris , John O'Byrne , Jon S. Lawrence , Michael J. Withford , Peter G. Tuthill

The advances in fabrication processes in different material platforms employed in integrated optics are opening the path towards the implementation of circuits with increasing degree of complexity. In addition to the more conventional…

Applied Physics · Physics 2018-10-24 Daniel Perez , Jose Capmany

Orthogonal frequency-division multiplexing (OFDM) is a promising waveform candidate for future joint sensing and communication systems. It is well known that the OFDM waveform is vulnerable to in-phase and quadrature-phase (IQ) imbalance,…

Signal Processing · Electrical Eng. & Systems 2023-11-17 Oliver Lang , Christian Hofbauer , Moritz Tockner , Reinhard Feger , Thomas Wagner , Mario Huemer

Multiplexing multiple orbital angular momentum (OAM) modes of light has the potential to increase data capacity in optical communication. However, the distribution of such modes over long distances remains challenging. Free-space…

Optics · Physics 2022-01-19 Yifan Liu , Zhisen Zhang , Panpan Yu , Yijing Wu , Ziqiang Wang , Yinmei Li , Wen Liu , Lei Gong

The deployment of millimeter wave (mmWave) multiple-input multiple-output (MIMO) systems cannot rely solely on digital precoding due to hardware constraints. Instead, hybrid precoding, which combines digital and radio frequency (RF)…

Signal Processing · Electrical Eng. & Systems 2025-09-16 Navid Reyhanian , Reza Ghaderi Zefreh , Parisa Ramezani , Emil Björnson

A light beam carrying orbital angular momentum (OAM) is characterized by a helical phase-front that winds around the center of the beam. These beams have unique properties that have found numerous applications. In the field of data…

Optics · Physics 2023-10-13 Julian Schulz , Georg von Freymann

A one-dimensional (1-D) anomalous-diffusive molecular communication channel is considered, wherein the devices (transmitter (TX) and receiver (RX)) can move in either direction along the axis. For modeling the anomalous diffusion of…

Signal Processing · Electrical Eng. & Systems 2022-03-29 Lokendra Chouhan , Prabhat Kumar Upadhyay , Prabhat Kumar Sharma , Anas M. Salhab

Capacity is the eternal pursuit for communication systems due to the overwhelming demand of bandwidth hungry applications. As the backbone infrastructure of modern communication networks, the optical fiber transmission system undergoes a…

Information Theory · Computer Science 2017-07-27 Qiong Wu , Zhenhua Feng , Ming Tang , Xiang Li , Ming Luo , Huibin Zhou , Songnian Fu , Deming Liu

We demonstrate the design and optimization of on-chip arbitrary dispersion profiles using deep photonic networks constructed from custom-designed Mach-Zehnder interferometers. These photonic networks employ optimizable waveguide tapers,…

An increasing bandwidth demand has mandated a shift to the time and wavelength division multiplexing (TWDM) techniques in optical access networks (OAN). Typical TWDM scheduling schemes consider scheduling of the optical line terminal…

Networking and Internet Architecture · Computer Science 2017-08-07 Chayan Bhar , Arnab Mitra , Goutam Das

We present a design approach for realizing on-chip wavelength division demultiplexing (WDD) schemes by integrating all-dielectric metasurfaces of TiO2 nanorod arrays into a SiN waveguide. The designed metasurface locally modifies the…

Optics · Physics 2022-08-09 Amged Alquliah , Mohamed ElKabbash , JinLuo Cheng , Wei Li , Chunlei Guo

Today, we have required to accommodate a large number of users under a single base station. This can be possible only if we have some flexibility over the spectrum. Previously we have lots of multiplexing methods to accommodate large number…

Information Theory · Computer Science 2014-07-01 Sutanu Ghosh

Nonlinear distortion experienced by signals during their propagation through optical fibers strongly limits the throughput of optical communication systems. Recently, a strong research focus has been dedicated to nonlinearity mitigation and…

Signal Processing · Electrical Eng. & Systems 2019-03-14 F. Da Ros , S. Civelli , S. Gaiarin , E. P. da Silva , N. De Renzis , M. Secondini , D. Zibar

When multimode optical fibers are perturbed, the data that is transmitted through them is scrambled. This presents a major difficulty for many possible applications, such as multimode fiber-based telecommunication and endoscopy. To overcome…

Image and Video Processing · Electrical Eng. & Systems 2022-02-17 Shachar Resisi , Sebastien M. Popoff , Yaron Bromberg

The use of the millimeter (mm) wave spectrum for next generation (5G) mobile communication has gained significant attention recently. The small carrier wavelengths at mmwave frequencies enable synthesis of compact antenna arrays, providing…

Information Theory · Computer Science 2014-10-22 Jaspreet Singh , Sudhir Ramakrishna

Wireless communication is the most effective communication to convey audio or video information among the population. It enables the masses to connect throughout the world. Wireless technologies improve the lifestyle of individuals in rural…

Signal Processing · Electrical Eng. & Systems 2020-02-13 Usha S. M , Mahesh H. B

Arbitrary linear transformations are of crucial importance in a plethora of photonic applications spanning classical signal processing, communication systems, quantum information processing and machine learning. Here, we present a new…

Multimode fibres (MMF) are remarkable high-capacity information channels owing to the large number of transmitting fibre modes, and have recently attracted significant renewed interest in applications such as optical communication, imaging,…

Optics · Physics 2018-08-27 Pengfei Fan , Tianrui Zhao , Lei Su
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