Castelló-Pedrero Lucía, Gómez-Gómez María I, García-Rupérez Jaime, Griol Amadeu, Martínez Alejandro
Nanophotonics Technology Center, Universitat Politècnica de València, Camino de Vera s/n, Building 8F, 46022 Valencia, Spain.
Biomed Opt Express. 2021 Nov 1;12(11):7244-7260. doi: 10.1364/BOE.437823.
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 1310 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 1310 nm wavelengths compared to 1550 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 1310 nm regime for biosensing using integrated photonics.
由于硅基环形谐振器能够作为无标记光子传感器发挥作用，因此已被证明是构建芯片实验室设备的关键元件。在这项工作中，我们展示了使用在1310 nm波长附近以TM模式运行的氮化硅环形谐振器进行光子生物传感。我们的结果表明，与通常使用的TE模式相比，使用TM模式操作设备可提高灵敏度，而在1310 nm波长下工作相比于1550 nm波长有助于提高品质因数。结果，实现了检测本征极限的降低，这表明1310 nm波段的TM模式适用于使用集成光子学进行生物传感。
