Anapole enhanced on-chip routing of spinâ€"valley photons in 2D materials for silicon integrated optical communication
Controlling the propagation direction of polarized light is crucial for optical communications and functional optical components. However, all-dielectric on-chip technology exploiting valley photon emission in transition metal dichalcogenides with enhanced emission has yet to be fully explored. Here...
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| Veröffentlicht in: | Optics letters 2021-09, Vol.46 (17), p.4080 |
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| container_issue | 17 |
| container_start_page | 4080 |
| container_title | Optics letters |
| container_volume | 46 |
| creator | Yao, Qi Bie, Ya-Qing Chen, Jianfa Li, Jinyang Li, Feng Cao, Zhaolong |
| description | Controlling the propagation direction of polarized light is crucial for optical communications and functional optical components. However, all-dielectric on-chip technology exploiting valley photon emission in transition metal dichalcogenides with enhanced emission has yet to be fully explored. Here, we report a design for enhancing valley emission and manipulating valley photon propagation based on degenerate non-radiating anapole states. By placing circularly polarized dipoles on top of a ð¶4 symmetric cross-slotted silicon disk, the rotating anapole state is excited with a Purcell factor up to two orders. In addition, the photon coupled to the preferred direction of the waveguide are about 2 times larger than that to the opposite direction. Our design could pave the way for realizing on-chip valley-dependent optical communication. |
| doi_str_mv | 10.1364/OL.433457 |
| format | Article |
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| fulltext | fulltext |
| identifier | ISSN: 0146-9592 |
| ispartof | Optics letters, 2021-09, Vol.46 (17), p.4080 |
| issn | 0146-9592 1539-4794 |
| language | eng |
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| source | Optica Publishing Group Journals |
| subjects | Circular polarization Dipoles Optical communication Optical components Photon emission Photons Polarized light Propagation Rotating disks Silicon Transition metal compounds Two dimensional materials Valleys Waveguides |
| title | Anapole enhanced on-chip routing of spinâ€"valley photons in 2D materials for silicon integrated optical communication |
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