Broadband circulators based on directional coupling of one-way waveguides

Author(s)
Qiu, Wenjun; Wang, Zheng; Soljacic, Marin
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Abstract
Resonator-based optical circulators are fundamentally bandwidth-limited by their quality factors. We propose a new type of circulator based on directional coupling between one-way photonic chiral edge states and conventional two-way waveguides. The operational bandwidth of such circulators is tied to the bandwidth of the directional waveguide coupler and has the potential for simultaneous broadband operation and small device footprint.
Date issued
2011-10
URI
http://hdl.handle.net/1721.1/76613
Department
Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. School of Science
Journal
Optics Express
Publisher
Optical Society of America
Citation
Qiu, Wenjun, Zheng Wang, and Marin Soljačić. “Broadband Circulators Based on Directional Coupling of One-way Waveguides.” Optics Express 19.22 (2011): 22248. © 2011 OSA
Version: Final published version
ISSN
1094-4087
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