Tilted subwavelength gratings (SWG) allows anisotropy tailorable metamaterials with applications in polarization management. Based on this concept, here we experimentally demonstrate a broadband directional-couplerbased ...

Silicon photonics is playing a key role in areas as diverse as high-speed optical communications, neural networks, supercomputing, quantum photonics, and sensing, which demand the development of highly efficient and compact ...

Los dispositivos ópticos integrados basados en silicio se han convertido en una pieza clave de los sistemas actuales de comunicaciones para larga distancia y centros de datos. Permiten una alta integración de componentes ...

Graded-index materials offer virtually complete control over light propagation in integrated photonic chips but can be challenging to implement. Here, an anisotropic graded-index metamaterial, synthesized with fully etched ...

Photonic integrated biosensors have emerged as a highly attractive alternative for biomarker detection in applications ranging from clinical diagnosis to food quality monitoring. Detecting specific target and differentiating ...

Esta Tesis está dedicada al estudio de las estructuras de rejilla de sublongitud de onda (SWG, por sus siglas en inglés): metamateriales ópticos extremadamente versátiles que se han convertido en una herramienta fundamental ...

Integrated metamaterials are redefining the capabilities of silicon photonic chips. In providing lithographic control over dielectric permittivity, dispersion and anisotropy, they are enabling photonic devices with ...

Beam splitters are core components of photonic integrated circuits and are often implemented with multimode interference couplers. While these devices offer high performance, their operational bandwidth is still restrictive ...

Surface grating couplers enable efficient coupling of light between optical fibers and nanophotonic waveguides. However, in conventional grating couplers, the radiation angle is intrinsically wavelength dependent, thereby ...

In this work we propose the utilization of the Butler matrix as a six-port I/Q demodulator. The inherent symmetry of its topology allows to overcome the intrinsic amplitude and phase imbalances of the traditional approaches ...