Publication Update W42 2019

• Tan, M. et al. Microwave photonic fractional Hilbert transformer with an integrated optical soliton crystal micro-comb. arXiv:1910.06282 [physics] (2019) doi:10.1109/JLT.2019.2946606.
• Jang, J. K. et al. Observation of Arnold Tongues in Coupled Soliton Kerr Frequency Combs. Phys. Rev. Lett. 123, 153901 (2019).

And below two more papers covering χ⁽²⁾ effects in resonators and one paper on silicon nitride microresonator fabrication.

• Podivilov, E., Smirnov, S., Breunig, I. & Sturman, B. Nonlinear solutions for χ⁽²⁾ frequency combs in optical microresonators. arXiv:1910.03397 [physics] (2019).
• Bruch, A. W., Liu, X., Surya, J. B., Zou, C.-L. & Tang, H. X. On-chip χ⁽²⁾ microring optical parametric oscillator. Optica, OPTICA 6, 1361–1366 (2019).
• Dirani, H. E. et al. Ultralow-loss tightly confining Si₃N₄ waveguides and high-Q microresonators. Opt. Express, OE 27, 30726–30740 (2019).

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