Zobrazeno 1 - 10
of 1 227
pro vyhledávání: '"Cheben, Pavel"'
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:
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
Autor:
Al-Digeil, Muhammad, Grinberg, Yuri, Melati3, Daniele, Dezfouli, Mohsen Kamandar, Schmid, Jens H., Cheben, Pavel, Janz, Siegfried, Xu, Dan-Xia
Autoencoders (AE) provide a useful method for nonlinear dimensionality reduction but are ill-suited for low data regimes. Conversely, Principal Component Analysis (PCA) is data-efficient but is limited to linear dimensionality reduction, posing a pro
Externí odkaz:
http://arxiv.org/abs/2205.11673
Autor:
Melati, Daniele, Xu, Dan-Xia, Cheriton, Ross, Wang, Shurui, Vachon, Martin, Schmid, Jens H., Cheben, Pavel, Janz, Siegfried
We present a comparative experimental study of three silicon photonic echelle grating demultiplexers that are integrated with a Mach-Zehnder interferometer (MZI) launch structure. By appropriate choice of the MZI configuration, the temperature induce
Externí odkaz:
http://arxiv.org/abs/2201.02700
Autor:
Dinh, Thi Thuy Duong, Roux, Xavier Le, Koompai, Natnicha, Melati, Daniele, Montesinos-Ballester, Miguel, González-Andrade, David, Cheben, Pavel, Velasco, Aitor V., Cassan, Eric, Marris-Morini, Delphine, Vivien, Laurent, Alonso-Ramos, Carlos
Integrated mid-infrared micro-spectrometers have a great potential for applications in environmental monitoring and space exploration. Silicon-on-insulator (SOI) is a promising platform to tackle this integration challenge, due to its unique capabili
Externí odkaz:
http://arxiv.org/abs/2112.01961