Zobrazeno 1 - 10
of 1 617
pro vyhledávání: '"P, Cheben"'
Autor:
Diab, Momen, Cheriton, Ross, Taylor, Jacob, Patel, Dhwanil, Rojas, Libertad, Barnet, Mark, Zavyalova, Polina, Xu, Dan-Xia, Cheben, Pavel, Janz, Siegfried, Schmid, Jens H., Sivanandam, Suresh
In ground-based astronomy, the ability to couple light into single-mode fibers (SMFs) is limited by atmospheric turbulence, which prohibits the use of many astrophotonic instruments. We propose a silicon-on-insulator photonic chip capable of coherent
Externí odkaz:
http://arxiv.org/abs/2408.07735
Autor:
Patel, Dhwanil, Diab, Momen, Cheriton, Ross, Taylor, Jacob, Rojas, Libertad, Vachon, Martin, Xu, Dan-Xia, Schmid, Jens H., Cheben, Pavel, Janz, Siegfried, Sivanandam, Suresh
Optical beams and starlight distorted by atmospheric turbulence can be corrected with adaptive optics systems to enable efficient coupling into single-mode fibers. Deformable mirrors, used to flatten the wavefront in astronomical telescopes, are cost
Externí odkaz:
http://arxiv.org/abs/2407.11171
Publikováno v:
de Cabo, R. F., Gonz\'alez-Andrade, D., Cheben, P., & Velasco, A. V. (2025). Optics & Laser Technology, 181, 111921
Power splitters play a crucial role in virtually all photonic circuits, enabling precise control of on-chip signal distribution. However, state-of-the-art solutions typically present trade-offs in terms of loss, bandwidth, and fabrication robustness,
Externí odkaz:
http://arxiv.org/abs/2403.15781
Autor:
Ruano, Paula Nuño, Zhang, Jianhao, González-Andrade, David, Melati, Daniele, Cassan, Eric, Cheben, Pavel, Vivien, Laurent, Lanzillotti-Kimura, Norberto Daniel, Alonso-Ramos, Carlos
On-chip Brillouin scattering plays a key role in numerous applications in the domain of signal processing and microwave photonics due to the coherent bidirectional coupling between near-infrared optical signals and GHz mechanical modes, which enables
Externí odkaz:
http://arxiv.org/abs/2402.15403
Autor:
Zhang, Jianhao, Melati, Daniele, Grinberg, Yuri, Vachon, Martin, Wang, Shurui, Al-Digeil, Muhammad, Janz, Siegfried, Schmid, Jens H., Cheben, Pavel, Xu, Dan-Xia
Perfectly vertical grating couplers leveraging metamaterials can achieve both high coupling efficiency and minimal back reflection. The fabricability of these designs, with segmentations in both the longitudinal and transverse dimensions, hinges on t
Externí odkaz:
http://arxiv.org/abs/2311.12057
Autor:
Janz, Siegfried, Xu, Dan-Xia, Grinberg, Yuri, Wang, Shurui, Vachon, Martin, Cheben, Pavel, Schmid, Jens H., Melati, Daniele
Silicon photonic wavefront phase-tilt sensors for wavefront monitoring using surface coupling grating arrays are demonstrated. The first design employs the intrinsic angle dependence of the grating coupling efficiency to determine local wavefront til
Externí odkaz:
http://arxiv.org/abs/2309.11424
Autor:
Alejandro Fernández-Hinestrosa, José Manuel Luque-González, Pavel Cheben, Jens H. Schmid, Shurui Wang, J. Gonzalo Wangüemert-Pérez, Iñigo Molina-Fernández, Alejandro Ortega-Moñux
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-8 (2024)
Abstract Spectral filters are fundamental building blocks in integrated photonics. Bragg grating filters have been demonstrated in silicon waveguides with a wide range of spectral responses and are suitable for wavelength division multiplexing applic
Externí odkaz:
https://doaj.org/article/797556879720409f86f03b255f34e35d
Autor:
de Cabo, Raquel Fernández, Vilas, Jaime, Cheben, Pavel, Velasco, Aitor V., González-Andrade, David
Silicon photonic integrated circuits routinely require 3-dB optical power dividers with minimal losses, small footprints, ultra-wide bandwidths, and relaxed manufacturing tolerances to distribute light across the chip and as a key building block to f
Externí odkaz:
http://arxiv.org/abs/2301.04045
Autor:
Naraine, Cameron M., Westwood-Bachman, Jocelyn N., Horvath, Cameron, Aktary, Mirwais, Knights, Andrew P., Schmid, Jens H., Cheben, Pavel, Bradley, Jonathan D. B.
We propose and demonstrate subwavelength grating (SWG) metamaterial waveguides and ring resonators on a silicon nitride platform for the first time. The SWG waveguide is engineered such that a large overlap of 53% of the Bloch mode with the top cladd
Externí odkaz:
http://arxiv.org/abs/2209.09282
Highly efficient ultra-broad beam silicon nanophotonic antenna based on near-field phase engineering
Autor:
Khajavi, Shahrzad, Melati, Daniele, Cheben, Pavel, Schmid, Jens H., Ramos, Carlos A. Alonso, Ye, Winnie N.
Optical antennas are a fundamental element in optical phased arrays (OPA) and free-space optical interconnects. An outstanding challenge in optical antenna design lies in achieving high radiation efficiency, ultra-compact footprint and broad radiatio
Externí odkaz:
http://arxiv.org/abs/2209.00622