학술논문
Narrowband reflection from integrated Bragg gratings with corrugations on long side structures
Document Type
Conference
Source
2015 International Symposium on Next-Generation Electronics (ISNE) Next-Generation Electronics (ISNE), 2015 International Symposium on. :1-4 May, 2015
Subject
Language
ISSN
2378-8593
2378-8607
2378-8607
Abstract
An alternative approach to realize CMOS-compatible integrated Bragg gratings is proposed and implemented in this work to allow flexible control of the reflection response. To enable weak grating coupling strength in fully-etched waveguide, we employ corrugations on long side waveguides in the proposed cladding-modulated waveguides, leading to a measured reflection bandwidth of only 0.44 nm and a peak reflectivity of 96%. This grating design is relatively insensitive to the grating width variation, so within 1nm Bragg wavelength variation is also observed.