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 2700210Ämneskategorier
Annan elektroteknik och elektronik
DOI
10.1109/JPHOT.2019.2939088