Wavelength-Flattened Directional Coupler Based Mid-Infrared Chemical Sensor Using Bragg Wavelength in Subwavelength Grating Structure

Wavelength-Flattened Directional Coupler Based Mid-Infrared Chemical Sensor Using Bragg Wavelength in Subwavelength Grating Structure

In this paper, we report a compact wavelength-flattened directional coupler (WFDC) based chemical sensor featuring an incorporated subwavelength grating (SWG) structure for the mid-infrared (MIR). By incorporating a SWG structure into directional coupler (DC), the dispersion in DC can be engineered...

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Bibliographic Details
Main Authors: Bowei Dong, Ting Hu, Xianshu Luo, Yuhua Chang, Xin Guo, Hong Wang, Dim-Lee Kwong, Guo-Qiang Lo, Chengkuo Lee
Format: Article
Language:English
Published: MDPI AG 2018-11-01
Series:Nanomaterials
Subjects:
nanophotonics
photonics sensors
mid-infrared
waveguide coupler
subwavelength grating
Online Access:https://www.mdpi.com/2079-4991/8/11/893

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