Nonconservative Coupling in a Passive Silicon Microring Resonator

The authors report on nonconservative coupling in a passive silicon microring between its clockwise and counterclockwise resonance modes. The coupling coefficient is adjustable using a thermo-optic phase shifter. The resulting resonance of the supermodes due to nonconservative coupling is predicted...

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Bibliographic Details
Published in:Physical review letters 2020-01, Vol.124 (1), p.013606-013606, Article 013606
Main Authors: Du, H, Zhang, X, Littlejohns, C G, Tran, D T, Yan, X, Banakar, M, Wei, C, Thomson, D J, Reed, G T
Format: Article
Language:English
Subjects:
Coupling coefficients
Phase shifters
Photonics
Resonance
Silicon
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Summary:The authors report on nonconservative coupling in a passive silicon microring between its clockwise and counterclockwise resonance modes. The coupling coefficient is adjustable using a thermo-optic phase shifter. The resulting resonance of the supermodes due to nonconservative coupling is predicted in theory and demonstrated in experiments. This Letter paves the way for fundamental studies of on-chip lasers and quantum photonics, and their potential applications.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.124.013606