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Akademický článek

Clearing a path for light through non-Hermitian media

Autor: Dave Utsav D., Bhatt Gaurang R., Rodrigues Janderson R., Datta Ipshita, Lipson Michal

Publikováno v: Nanophotonics, Vol 13, Iss 21, Pp 3945-3952 (2024)

The performance of all active photonic devices today is greatly limited by loss. Here, we show that one can engineer a low loss path in a metal-clad lossy multi-mode waveguide while simultaneously achieving high-performance active photonic devices. W

Externí odkaz: https://doaj.org/article/c0320f980dc8418895a648b93af7d55d

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Fabrication-Robust Silicon Photonic Devices in Standard Sub-Micron Silicon-on-Insulator Processes

Autor: Rizzo, Anthony, Dave, Utsav, Novick, Asher, Freitas, Alexandre, Roberts, Samantha P., James, Aneek, Lipson, Michal, Bergman, Keren

Perturbations to the effective refractive index from nanometer-scale fabrication variations in waveguide geometry plague high index-contrast photonic platforms including the ubiquitous sub-micron silicon-on-insulator (SOI) process. Such variations ar

Externí odkaz: http://arxiv.org/abs/2205.11481

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Exploiting Ultralow Loss Multimode Waveguides for Broadband Frequency Combs

Autor: Ji, Xingchen, Jang, Jae K., Dave, Utsav D., Corato-Zanarella, Mateus, Joshi, Chaitanya, Gaeta, Alexander L., Lipson, Michal

Publikováno v: Laser & Photonics Reviews (2020)

Low propagation loss in high confinement waveguides is critical for chip-based nonlinear photonics applications. Sophisticated fabrication processes which yield sub-nm roughness are generally needed to reduce scattering points at the waveguide interf

Externí odkaz: http://arxiv.org/abs/2012.04191

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Second Harmonic Generation Enabled by Longitudinal Electric Field Components in Photonic Wire Waveguides

Autor: Poulvellarie, Nicolas, Dave, Utsav, Alexander, Koen, Ciret, Charles, Billet, Maximilien, Arabi, Carlos Mas, Raineri, Fabrice, Combrie, Sylvain, De Rossi, Alfredo, Roelkens, Gunther, Gorza, Simon-Pierre, Kuyken, Bart, Leo, Francois

Publikováno v: Phys. Rev. A 102, 023521 (2020)

We investigate type I second harmonic generation in III-V semiconductor wire waveguides aligned with a crystallographic axis. In this direction, because of the single nonzero tensor element of III-V semiconductors, only frequency conversion by mixing

Externí odkaz: http://arxiv.org/abs/2001.01709

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Akademický článek

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Dispersive wave emission and supercontinuum generation in a silicon wire waveguide pumped around the 1550 nm telecommunication wavelength

Autor: Leo, François, Gorza, Simon-Pierre, Safioui, Jassem, Kockaert, Pascal, Coen, Stéphane, Dave, Utsav, Kuyken, Bart, Roelkens, Gunther

We experimentally and numerically study dispersive wave emission, soliton fission and supercontinuum generation in a silicon wire at telecommunication wavelengths. Through dispersion engineering, we experimentally confirm a previously reported numeri

Externí odkaz: http://arxiv.org/abs/1401.5713

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