High-efficiency second-harmonic generation in doubly-resonant c (2)microring resonators

Zhuan Fang Bi, Alejandro W. Rodriguez, Hila Hashemi, David Duchesne, Marko Loncar, Ke Ming Wang, Steven G. Johnson

Research output: Contribution to journalArticlepeer-review

52 Scopus citations


By directly simulating Maxwell's equations via the finitedifference time-domain (FDTD) method, we numerically demonstrate the possibility of achieving high-efficiency second harmonic generation (SHG) in a structure consisting of a microscale doubly-resonant ring resonator side-coupled to two adjacent waveguides. We find that ≥ 94% conversion efficiency can be attained at telecom wavelengths, for incident powers in the milliwatts, and for reasonably large bandwidths (Q ∼ 1000s). We demonstrate that in this high efficiency regime, the system also exhibits limit-cycle or bistable behavior for light incident above a threshold power. Our numerical results agree to within a few percent with the predictions of a simple but rigorous coupled-mode theory framework.

Original languageEnglish (US)
Pages (from-to)7526-7543
Number of pages18
JournalOptics Express
Issue number7
StatePublished - Mar 26 2012
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics


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