狭缝波导生化传感器。

Slot-waveguide biochemical sensor.

作者信息

Barrios Carlos A, Gylfason Kristinn B, Sánchez Benito, Griol Amadeu, Sohlström H, Holgado M, Casquel R

机构信息

Instituto de Sistemas Optoelectrónicos y Microtecnología (ISOM), Universidad Politécnica de Madrid, Spain.

出版信息

Opt Lett. 2007 Nov 1;32(21):3080-2. doi: 10.1364/ol.32.003080.

DOI:10.1364/ol.32.003080

PMID:17975603

Abstract

We report an experimental demonstration of an integrated biochemical sensor based on a slot-waveguide microring resonator. The microresonator is fabricated on a Si3N4-SiO2 platform and operates at a wavelength of 1.3 microm. The transmission spectrum of the sensor is measured with different ambient refractive indices ranging from n=1.33 to 1.42. A linear shift of the resonant wavelength with increasing ambient refractive index of 212 nm/refractive index units (RIU) is observed. The sensor detects a minimal refractive index variation of 2x10(-4) RIU.

摘要

我们报道了一种基于狭缝波导微环谐振器的集成生化传感器的实验演示。该微谐振器在Si3N4-SiO2平台上制造，工作波长为1.3微米。在环境折射率范围从n = 1.33到1.42的情况下测量了传感器的透射光谱。观察到谐振波长随着环境折射率增加呈线性变化，变化率为212纳米/折射率单位（RIU）。该传感器能检测到的最小折射率变化为2×10^(-4) RIU。