1.
Biomed Opt Express
; 12(11): 7244-7260, 2021 Nov 01.
Artigo
em Inglês
| MEDLINE
| ID: mdl-34858712
RESUMO
Silicon-based ring resonators have been demonstrated to be a key element to build lab-on-chip devices due to their ability to perform as label-free photonic sensors. In this work, we demonstrate photonic biosensing using silicon nitride ring resonators operated in the TM mode around 1310â nm wavelengths. Our results show that operating the devices using the TM mode results in an increased sensitivity in comparison with the typically used TE mode, while working at 1310â nm wavelengths compared to 1550â nm contributes to an increased quality factor. As a result, a reduction in the intrinsic limit of detection is achieved, indicating the suitability of TM modes in the 1310â nm regime for biosensing using integrated photonics.