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Title: | Ultra-low power all-optically tuned hybrid graphene ultra silicon-rich nitride ring resonator-based add-drop filter for DWDM systems |
Authors: | Rukerandanga, Filston Musyoki, Stephen Ataro, Edwin O. |
Keywords: | Kerr effect Ring resonator |
Issue Date: | 2022 |
Publisher: | MDPI |
Abstract: | This research work conducted a design and simulation of an ultra-low power all-optically tuned nonlinear ring resonator-based add-drop filter. The purpose of this study is to investigate a CMOS-compatible nonlinear material system for an optical filter with temperature resilience, polarization insensitivity, and fast and energy-efficient tunability. The all-optical tunability was achieved using an optical pump that photo-excites the high nonlinear Kerr effect in the device material system. A three-dimensional multiphysics approach was used, combining the electromagnetics and thermo-structural effects in the filter. Hybrid graphene on an ultra-rich silicon nitride ring resonator- based filter enabled the realization of an ultra-high tuning efficiency (0.275 nm/mW for TE mode and 0.253 nm/mW for TM mode) on a range of 1.55 nm and thermal stability of 0.11 pm/K. This work contributed to the existing literature by proposing (1) the integration of a high Kerr effect layer on a low loss, high index contrast, and two-photon absorption-free core material with an athermal cladding material system and (2) the use of a cross-section shape insensitive to polarization. Moreover, the tuning mechanism contributed to the realization of an all-optical on-chip integrable filter for Dense Wavelength Division Multiplexing systems in the less occupied L band |
URI: | https://doi.org/10.3390/opt3030027 http://ir.mu.ac.ke:8080/jspui/handle/123456789/7390 |
Appears in Collections: | School of Engineering |
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