RT Conference Proceedings
T1 Design of arbitrary optical filters in silicon-on-insulator using evanescently-coupled Bragg gratings
A1 Pereira-Martín, Daniel
A1 Ortega-Moñux, Alejandro
A1 Molina-Fernández, Íñigo
A1 Luque-González, José Manuel
A1 Cheben, Pavel
A1 Schmid, Jens H.
A1 Ye, Winnie N.
A1 Ctyroky, Jiri
A1 Wanguemert-Pérez, Juan Gonzalo
AB Spectral filters are experiencing an increasing demand in several applications of the silicon-on-insulator (SOI) platform. Many works have demonstrated that arbitrary frequencyresponses can be synthesized by apodizing the coupling coefficient profile of an integratedBragg grating. However, the high index contrast of the SOI platform hinders theirpractical implementation, due to the difficulty of achieving the precise control required inthe Bragg strength. In this paper, we propose the implementation of spectral filters usingan architecture based on placing loading segments within the evanescent field region of aphotonic wire waveguide. The Bragg coupling coefficient can be accurately controlled bysimply moving the segments away from, or closer to, the waveguide core. The layerpeelingalgorithm, in conjunction with a Floquet-Bloch modal analysis, allows to determinethe spatial distribution of the segments that synthesizes the desired spectrum. Theproposed topology is verified by designing a filter with five arbitrary passbands.
YR 2019
FD 2019-07-10
LK https://hdl.handle.net/10630/17995
UL https://hdl.handle.net/10630/17995
LA eng
NO Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech.
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 20 ene 2026