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Unidirectional reflection from an integrated 'taiji' microresonator
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Unidirectional reflection from an integrated 'taiji' microresonator
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| Calabrese, A.; Ramiro Manzano, Fernando; Price, H. M.; Biasi, Stefano; Bernard, Martino; Ghulinyan, Mher; Carusotto, Iacopo; Pavesi, Lorenzo | |||
| This document is a artículoDate2020 | |||
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| We study light transmission and reflection from an integrated microresonator device, formed by a circular microresonator coupled to a bus waveguide, with an embedded S-shaped additional crossover waveguide element that selectively couples counter-propagating modes in a propagation-direction-dependent way. The overall shape of the device resembles a 'taiji' symbol, hence its name. While Lorentz reciprocity is preserved in transmission, the peculiar geometry allows us to exploit the non-Hermitian nature of the system to obtain high-contrast unidirectional reflection with negligible reflection for light incident in one direction and a significant reflection in the opposite direction. | |||
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Calabrese, A. Ramiro Manzano, Fernando Price, H. M. Biasi, Stefano Bernard, Martino Ghulinyan, Mher Carusotto, Iacopo Pavesi, Lorenzo 2020 Unidirectional reflection from an integrated 'taiji' microresonator Photonics Research 8 8 1333 1341 |
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| https://doi.org/10.1364/PRJ.393070 |
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22 - Física [98]