Unidirectional Light Generation in PT-symmetric Microring Lasers

Authors :: Steffen Wittek
Mercedeh Khajavikhan
Midya Parto
Mohammad P. Hokmabadi
Demetrios N. Christodoulides
Jinhan Ren
Source :: Scopus-Elsevier
Publication Year :: 2018
Publisher :: OSA, 2018.
Abstract: At resonance, mircoring resonators tend to support two counter-propagating degenerate modes. By incorporating S-bend chiral elements in each resonator, unidirectional single mode lasing below and above PT-symmetry breaking point is experimentally demonstrated.