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Title: Side-lobe reduction by cascading Bragg grating filters on a Si-photonic chip
Bragg-grating based cavities and coupler designs present opportunities for flexible allocation of bandwidth and spectrum in silicon photonic devices. Integrated silicon photonic devices are moving toward mainstream, mass adoption, leading to the need for compact Bragg grating based designs. In this work we present a design and experimental validation of a cascaded contra-directional Bragg-grating coupler with a measured main lobe to side-lobe contrast of 12.93 dB. This level of performance is achieved in a more compact size as compared to conventional apodized gratings, and a similar design philosophy can be used to improve side-lobe reduction in grating-based mirror design for on-chip lasers and other cavity-based designs as well.  more » « less
Award ID(s):
1807890 1901844 2025752 2023730
PAR ID:
10531226
Author(s) / Creator(s):
; ; ;
Publisher / Repository:
Optical Society of America
Date Published:
Journal Name:
Optics Express
Volume:
30
Issue:
6
ISSN:
1094-4087; OPEXFF
Format(s):
Medium: X Size: Article No. 9983
Size(s):
Article No. 9983
Sponsoring Org:
National Science Foundation
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