Theory of light propagation in arbitrary two-dimensional curved space

Chenni Xu, Li Gang Wang

Research output: Contribution to journalArticlepeer-review

7 Scopus citations


As an analog model of general relativity, optics on some two-dimensional (2D) curved surfaces has received increasing attention in the past decade. Here, in light of the Huygens-Fresnel principle, we propose a theoretical frame to study light propagation along arbitrary geodesics on any 2D curved surfaces. This theory not only enables us to solve the enigma of "infinite intensity"that existed previously at artificial singularities on surfaces of revolution but also makes it possible to study light propagation on arbitrary 2D curved surfaces. Based on this theory, we investigate the effects of light propagation on a typical surface of revolution, Flamm's paraboloid, as an example, from which one can understand the behavior of light in the curved geometry of Schwarzschild black holes. Our theory provides a convenient and powerful tool for investigations of radiation in curved space.

Original languageEnglish
Pages (from-to)2486-2493
Number of pages8
JournalPhotonics Research
Issue number12
StatePublished - 1 Dec 2021
Externally publishedYes

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