Sensitivity enhanced biophotonic sensor utilizing sub-wavelength gratings

被引：0
|
作者：
Yadav, Mukesh [1 ]
Hovik, Jens [1 ]
Hjelme, Dag Roar [1 ]
Aksnes, Astrid [1 ]
机构：
[1] NTNU, Dept Elect Syst, Trondheim, Norway
来源：
OPTICAL SENSING, IMAGING, AND PHOTON COUNTING: FROM X-RAYS TO THZ | 2018年 / 10729卷
关键词：
Optical waveguide sensor; biosensor; Mach-Zehnder interferometer; sub-wavelength gratings; silicon-on-insulator; waveguide; phase modulation; lab-on-a-chip; PERFORMANCE;
D O I：
10.1117/12.2321165
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We present a sensor design based on a Mach-Zehnder interferometer utilizing sub-wavelength gratings (SWGs) that were included in the waveguide to compensate for the short optical path length and to provide phase modulation. According to 2D finite element method simulations, it is possible to achieve 3-fold enhancement in sensitivity and 50% increase in modulation frequency with the inclusion of SWGs in the sensing arm as well as in the reference arm.
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页数：5
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