2026-06-06T19:14:02Zhttps://riuma.uma.es/rest/oai/request

oai:riuma.uma.es:10630/228722026-02-03T12:22:37Zcom_10630_2254col_10630_37959

00925njm 22002777a 4500 dc Pereira-Martín, Daniel author Ortega-Moñux, Alejandro author Luque-González, José Manuel author Hadij-El-Houati, Abdelfettah author Sánchez-Postigo, Alejandro author Molina-Fernández, Íñigo author Cheben, Pavel author Schmid, Jens H. author Shurui, Wang author Ye, Winnie N. author Ctyroky, Jiri author Wanguemert-Pérez, Juan Gonzalo author 2021-09-13 Waveguide Bragg gratings are expected to play an important role in diverse applications of photonic integrated circuits. Here, we present our latest progress in implementing Bragg filters with a customized spectral response in the silicon-on-insulator platform. Our filter comprises a silicon waveguide with an array of Bragg segments placed aside. The waveguide core is designed to have a reduced mode confinement, which enables an accurate control of the grating strength via modulation of the Bragg segment separation distance and allows for minimum feature sizes compatible with deep-UV lithography (>100 nm). Our design strategy is experimentally validated by demonstrating a filter with 20 non-uniformly spaced notches in the transmittance spectrum. Palabras clave: Silicon photonics, Bragg gratings, spectral filters. https://hdl.handle.net/10630/22872 Fotónica Silicio Customized spectral filters using cladding-modulated Bragg gratings in silicon waveguides.