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

sensor

integrated optics

silicon-on-insulator

Subwavelength grating

Författare

Mutasem Odeh

Khalifa University of Science and Technology

University of California at Berkeley

Krishna Sundar Twayana

Khalifa University of Science and Technology

Chalmers, Mikroteknologi och nanovetenskap (MC2), Fotonik

Karen Sloyan

Khalifa University of Science and Technology

Juan E. Villegas

Khalifa University of Science and Technology

New York University Abu Dhabi

Sujith Chandran

Khalifa University of Science and Technology

Marcus S. Dahlem

Interuniv Microelect Ctr

Khalifa University of Science and Technology

IEEE Photonics Journal

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

Vol. 11 5 2700210

Ämneskategorier

Annan elektroteknik och elektronik

DOI

10.1109/JPHOT.2019.2939088

Mer information

Senast uppdaterat

2020-04-20