Mode Sensitivity Analysis of Subwavelength Grating Slot Waveguides
Artikel i vetenskaplig tidskrift, 2019

In this paper, we investigate the mode sensitivity (S-mode) of subwavelength grating slot (SWGS) waveguides. S-mode is an important parameter in various waveguide-based photonic circuits such as sensors, modulators, and thermally-controlled devices. It is a measure of the sensitivity of the waveguide effective index towards the refractive index perturbations in the cladding medium. The SWGS waveguide exhibits high mode sensitivity, as it combines sensitivity enhancement features of both slot and subwavelength grating waveguides. Finite-difference time-domain simulations are performed for the analysis, design, and optimization of the hybrid structure. The SWGS waveguide is incorporated into a Mach-Zehnder interferometer and fabricated on a silicon-on-insulator platform for the experimental estimation of S-mode. The measured S-mode value of 79% is consistent with the theoretical prediction of 83%.


slot waveguide

Subwavelength grating

integrated optics



Mutasem Odeh

University of California at Berkeley

Khalifa University

Krishna Sundar Twayana

Chalmers, Mikroteknologi och nanovetenskap, Fotonik

Khalifa University

Karen Sloyan

Khalifa University

Juan E. Villegas

New York University Abu Dhabi

Khalifa University

Sujith Chandran

Khalifa University

Marcus S. Dahlem

Interuniv Microelect Ctr

Khalifa University

IEEE Photonics Journal

1943-0655 (ISSN) 1943-0647 (eISSN)

Vol. 11 5 2700210


Annan elektroteknik och elektronik



Mer information

Senast uppdaterat