Integrated optical ultra-broadband add-drop filter in silicon-on-insulator platform

Date Issued
13-06-2018
Author(s)
Sumi, R.
Gupta, Ramesh K.
Indian Institute of Technology, Madras
Indian Institute of Technology, Madras
Abstract
A sub-wavelength grating waveguide is designed and integrated in two arms of a 2 × 2 Mach-Zehnder interferometer in silicon-on-insulator which is capable of drop-ping(adding) ultra-broad wavelength bands centering at λ ∼1550nm with band-edge extinction exceeding 35-dB.