RT Journal Article
T1 Optical pump-rejection filter based on silicon sub-wavelength engineered photonic structures
A1 Pérez-Galacho, Diego
A1 Alonso-Ramos, Carlos
A1 Mazeas, Florent
A1 Le Roux, Xavier
A1 Oser, Dorian
A1 Zhang, Weiwei
A1 Marris-Morini, Delphine
A1 Labonté, Laurent
A1 Tanzilli, Sébastien
A1 Cassan, Éric
A1 Vivien, Laurent
K1 Comunicaciones ópticas
AB The high index contrast of the silicon-on-insulator (SOI) platform allows the realization of ultra-compact photonic circuits. However, this high contrast hinders the implementation of narrow-band Bragg filters.These typically require corrugations widths of a few nanometers or double-etch geometries, hampering device fabrication. Here we report, for the first time, on the realization of SOI Bragg filters based on sub-wavelength index engineering in a differential corrugation width configuration. The proposed double periodicity structure allows narrow-band rejection with a single etch step and relaxed width constraints.Based on this concept, we experimentally demonstrate a single-etch, 220 nm thick, Si Bragg filter featur- ing a corrugation width of 150 nm, a rejection bandwidth of 1.1 nm and an extinction ratio exceeding 40 dB. This represents a ten-fold width increase compared to conventional single-periodicity, single-etchcounterparts with similar bandwidths
PB Optical Publishing Group
YR 2017
FD 2017-04-04
LK https://hdl.handle.net/10630/33841
UL https://hdl.handle.net/10630/33841
LA eng
NO Diego Pérez-Galacho, Carlos Alonso-Ramos, Florent Mazeas, Xavier Le Roux, Dorian Oser, Weiwei Zhang, Delphine Marris-Morini, Laurent Labonté, Sébastien Tanzilli, Éric Cassan, and Laurent Vivien, "Optical pump-rejection filter based on silicon sub-wavelength engineered photonic structures," Opt. Lett. 42, 1468-1471 (2017)
NO his work was partially funded by the Agence Nationale de la Recherche (ANR-SITQOM- 15-CE24-0005), the European Research Council (ERC) under the European Unions Horizon 2020 research and innovation program (ERC POPSTAR grant agreement No 647342) and the NANO2017 programme with STMicroelectronics funded by the Ministre de l’conomie, de lindustrie et du numrique, Dlgation Gnrales des Entreprises.
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 19 ene 2026