Nonreciprocal cavities and the time-bandwidth limit: comment - Publikacja - MOST Wiedzy


Nonreciprocal cavities and the time-bandwidth limit: comment


In their paper in Optica 6, 104 (2019), Mann et al. claim that linear, time-invariant nonreciprocal structures cannot overcome the time-bandwidth limit and do not exhibit an advantage over their reciprocal counterparts, specifically with regard to their time-bandwidth performance. In this Comment, we argue that these conclusions are unfounded. On the basis of both rigorous full-wave simulations and insightful physical justifications, we explain that the temporal coupled-mode theory, on which Mann et al. base their main conclusions, is not suited for the study of nonreciprocal trapped states, and instead direct numerical solutions of Maxwell’s equations are required. Based on such an analysis, we show that a nonreciprocal terminated waveguide, resulting in a trapped state, clearly outperforms its reciprocal counterpart; i.e., both the extraordinary time-bandwidth performance and the large field enhancements observed in such modes are a direct consequence of nonreciprocity.


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Copyright (2020 Optical Society of America)

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Opublikowano w:
Optica nr 7, strony 1097 - 1101,
ISSN: 2334-2536
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Opis bibliograficzny:
Tsakmakidis K., You Y., Stefański T., Shen L.: Nonreciprocal cavities and the time-bandwidth limit: comment// Optica -Vol. 7,iss. 9 (2020), s.1097-1101
Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.1364/optica.384840
Politechnika Gdańska

wyświetlono 17 razy

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