基于弱一维场限制硅基波导的超高灵敏度马赫-曾德尔干涉仪传感器。
Ultrahigh Sensitivity Mach-Zehnder Interferometer Sensor Based on a Weak One-Dimensional Field Confinement Silica Waveguide.
机构信息
Key Lab for Micro and Nanophotonic Structures (Ministry of Education) of Ultra Precision Optical Manufacturing, Shanghai Engineering Research Center, Department of Optical Science and Engineering, Fudan University, Shanghai 200433, China.
出版信息
Sensors (Basel). 2021 Oct 2;21(19):6600. doi: 10.3390/s21196600.
We report a novel Mach-Zehnder interferometer (MZI) sensor that utilizes a weak one-dimensional field confinement silica waveguide (WCSW). The WCSW has a large horizontal and vertical aspect ratio and low refractive index difference, which features easy preparation and a large evanescent field for achieving high waveguide sensitivity. We experimentally achieved WCSW ultrahigh waveguide sensitivity of 0.94, MZI sensitivity of 44,364 π/RIU and a low limit of detection () of 6.1 × 10 RIU.
我们报告了一种新颖的马赫-曾德尔干涉仪（MZI）传感器，该传感器利用了弱一维场限制硅波导（WCSW）。WCSW 具有大的水平和垂直纵横比以及低的折射率差，这一特点使得其易于制备且具有大的消逝场，从而实现了高的波导灵敏度。我们实验实现了 WCSW 的超高波导灵敏度 0.94、MZI 灵敏度 44364π/RIU 和低检测限（LOD）6.1×10RIU。
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