RT Journal Article
T1 Silicon subwavelength modal Bragg grating filters with narrow bandwidth and high optical rejection
A1 Oser, Dorian
A1 Pérez-Galacho, Diego
A1 Le Roux, Xavier
A1 Tanzilli, Sébastien
A1 Vivien, Laurent
A1 Labonté, Laurent
A1 Cassan, Éric
A1 Alonso-Ramos, Carlos
K1 Comunicaciones ópticas
AB Waveguide Bragg grating filters with narrow bandwidth and high optical rejection are key func- tions for several advanced silicon photonics circuits. Here, we propose and demonstrate a new Bragg grating geometry that provides narrowband and high rejection response. It combines the advantages of subwavelength and modal engineering. As a proof-of-concept demonstration, we implement the proposed Bragg filters in the 220-nm-thick Si technology with a single etch step. We experimentally show flexible control of the filter selectivity, with measured null-to-null bandwidths below 2 nm, and strength of 60 dB rejection with a null-to-null bandwidth of 1.8 nm.
PB Optical Publishing Group
YR 2020
FD 2020-10-13
LK https://hdl.handle.net/10630/33939
UL https://hdl.handle.net/10630/33939
LA eng
NO Dorian Oser, Diego Pérez-Galacho, Xavier Le Roux, Sébastien Tanzilli, Laurent Vivien, Laurent Labonté, Éric Cassan, and Carlos Alonso-Ramos, "Silicon subwavelength modal Bragg grating filters with narrow bandwidth and high optical rejection," Opt. Lett. 45, 5784-5787 (2020)
NO Agence Nationale de la Recherche (ANRMIRSPEC-17-CE09-0041, ANR-SITQOM-15-CE24-0005); European Research Council (ERC POPSTAR 647342).
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 12 abr 2026