# Two-dimensional photonic crystal with ring degeneracy and its topological protected edge states

> Research article (Scientific Reports, 2019) · cited 14× · AI/ML

**Wikidata**: [openalex:W2919881244](https://www.wikidata.org/wiki/openalex:W2919881244)  
**Source**: https://4ort.xyz/entity/two-dimensional-photonic-crystal-with-ring-degeneracy-and-its-topological-protected-edge-states