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Title: Optical isolation with nonlinear topological photonics
Authors: Zhou, Xin
Wang, You
Leykam, Daniel
Chong, Yi Dong
Keywords: Optical Isolators
Issue Date: 2017
Source: Zhou, X., Wang, Y., Leykam, D., & Chong, Y. D. (2017). Optical isolation with nonlinear topological photonics. New Journal of Physics, 19(9), 095002-.
Series/Report no.: New Journal of Physics
Abstract: It is shown that the concept of topological phase transitions can be used to design nonlinear photonic structures exhibiting power thresholds and discontinuities in their transmittance. This provides a novel route to devising nonlinear optical isolators. We study three representative designs: (i) a waveguide array implementing a nonlinear 1D Su–Schrieffer–Heeger model, (ii) a waveguide array implementing a nonlinear 2D Haldane model, and (iii) a 2D lattice of coupled-ring waveguides. In the first two cases, we find a correspondence between the topological transition of the underlying linear lattice and the power threshold of the transmittance, and show that the transmission behavior is attributable to the emergence of a self-induced topological soliton. In the third case, we show that the topological transition produces a discontinuity in the transmittance curve, which can be exploited to achieve sharp jumps in the power-dependent isolation ratio.
DOI: 10.1088/1367-2630/aa7cb5
Rights: © 2017 IOP Publishing Ltd and Deutsche Physikalische Gesellschaft. Original content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
Fulltext Permission: open
Fulltext Availability: With Fulltext
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