COMPACT AND HIGH SENSITIVE SLOTTED BRAGG GRATING ON SOI PLATFORM FOR REFRACTIVE INDEX SENSOR

摘要

Essentials for silicon photonics are lowering size and cost without affecting effectiveness for various performances. One of the effective sensing elements with smaller footprints and few step fabrication is a micro ring resonators (MRR). Using slotted waveguides and sub-wavelength gratings (SWG) in MRRs have shown higher sensitivity . Recently combination of the SWG and slotted waveguides exhibited even higher performances . In the study, we propose a sensor with slotted SWGs on straight waveguide where Bragg grating (BG) reflection condition is fulfilled.