Article
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Optical Filters With Coupled Sagnac Loop Waveguide Reflectors
Version 1
: Received: 25 February 2021 / Approved: 26 February 2021 / Online: 26 February 2021 (09:33:58 CET)
How to cite: Arianfard, H.; Wu, J.; Moss, D. Optical Filters With Coupled Sagnac Loop Waveguide Reflectors. Preprints 2021, 2021020601. https://doi.org/10.20944/preprints202102.0601.v1 Arianfard, H.; Wu, J.; Moss, D. Optical Filters With Coupled Sagnac Loop Waveguide Reflectors. Preprints 2021, 2021020601. https://doi.org/10.20944/preprints202102.0601.v1
Abstract
We present theoretical designs of high performance optical filters in integrated silicon photonic nanowire resonators. We use mode interference in formed by zig-zag waveguide coupled Sagnac loop reflectors (ZWC-SLRs), tailored to achieve diverse filtering functions with good performance. These include compact bandpass filters with improved roll-off, optical analogues of Fano resonances with ultrahigh spectral extinction ratios (ERs) and slope rates, and resonance mode splitting with high ERs and low free spectral ranges. The analysis verifies the feasibility of multi-functional integrated photonic filters based on ZWC-SLR resonators for flexible spectral engineering in diverse applications.
Keywords
Integrated optics; resonators; Fano resonance; mode splitting; classical filters
Subject
Physical Sciences, Optics and Photonics
Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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