Design of an On-Chip Absorption Spectrometer Using Optofluidic Slotted Photonic Crystal Structures

IEEE Photonics Journal

卷:4

F. Hosseinibalam¹  C. Karnutsch²  A. Ebnali-Heidari³  S. Hassanzadeh³ 

[1] $^{1}$ Physics Department, University of Isfahan, Isfahan , Iran;

[2] $^{2}$Department of Electrical Engineering and Information Technology, University of Applied Sciences Karlsruhe, Karlsruhe, Germany;

[3] Physics Department, University of Isfahan, Isfahan, Iran;

关键词: Optofluidics;    slow light;    photonic crystal (PhC);    biosensor;   

DOI  :  10.1109/JPHOT.2012.2211097

来源: DOAJ

【 摘 要 】

The authors propose a tunable slow-light slotted photonic crystal (PhC) waveguide, without nanoscale variation of structure parameters, applicable in on-chip absorption spectroscopy. The main feature of this structure is that the enhanced electrical field is strongly localized in an air slot with nanometer width due to slow-light properties of a slot mode. In the proposed structure, the slow-light region of the slot mode can be controlled using a selective infiltration of a PhC waveguide. The numerical calculation reveals that an enhancement factor, $\gamma$, of 20 can be achieved.

【 授权许可】

Unknown