Optical isolation with nonlinear topological photonics
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...
| Main Authors: | , , , |
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| Format: | Journal Article |
| Language: | English |
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2018
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| Online Access: | https://hdl.handle.net/10356/87224 http://hdl.handle.net/10220/44338 |
| _version_ | 1811678837669363712 |
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| author | Zhou, Xin Wang, You Leykam, Daniel Chong, Yi Dong |
| author2 | School of Physical and Mathematical Sciences |
| author_facet | School of Physical and Mathematical Sciences Zhou, Xin Wang, You Leykam, Daniel Chong, Yi Dong |
| author_sort | Zhou, Xin |
| collection | NTU |
| description | 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. |
| first_indexed | 2024-10-01T02:59:37Z |
| format | Journal Article |
| id | ntu-10356/87224 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T02:59:37Z |
| publishDate | 2018 |
| record_format | dspace |
| spelling | ntu-10356/872242023-02-28T19:26:09Z Optical isolation with nonlinear topological photonics Zhou, Xin Wang, You Leykam, Daniel Chong, Yi Dong School of Physical and Mathematical Sciences Centre for Disruptive Photonic Technologies (CDPT) Optical Isolators Solitons 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. MOE (Min. of Education, S’pore) Published version 2018-01-24T03:55:27Z 2019-12-06T16:37:36Z 2018-01-24T03:55:27Z 2019-12-06T16:37:36Z 2017 Journal Article Zhou, X., Wang, Y., Leykam, D., & Chong, Y. D. (2017). Optical isolation with nonlinear topological photonics. New Journal of Physics, 19(9), 095002-. https://hdl.handle.net/10356/87224 http://hdl.handle.net/10220/44338 10.1088/1367-2630/aa7cb5 en New Journal of Physics © 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. 12 p. application/pdf |
| spellingShingle | Optical Isolators Solitons Zhou, Xin Wang, You Leykam, Daniel Chong, Yi Dong Optical isolation with nonlinear topological photonics |
| title | Optical isolation with nonlinear topological photonics |
| title_full | Optical isolation with nonlinear topological photonics |
| title_fullStr | Optical isolation with nonlinear topological photonics |
| title_full_unstemmed | Optical isolation with nonlinear topological photonics |
| title_short | Optical isolation with nonlinear topological photonics |
| title_sort | optical isolation with nonlinear topological photonics |
| topic | Optical Isolators Solitons |
| url | https://hdl.handle.net/10356/87224 http://hdl.handle.net/10220/44338 |
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