150 citations · 296 across the 9 of their papers we have counts for
9 papers
Single-mode Dispersion-engineered Nonlinear Integrated Waveguides for Ultra-broadband Optical Amplification and Wavelength Conversion
Ping Zhao, Vijay Shekhawat, Marcello Girardi +3
Four-wave mixing has extensively been investigated for various applications such as communications, spectroscopy, metrology, quantum computing and bio-imaging. However, there is a…
Vernier Microcombs for Integrated Optical Atomic Clocks
Kaiyi Wu, Nathan P. O'Malley, Saleha Fatema +8
CMOS-compatible Kerr microcombs have drawn substantial interest as mass-manufacturable, compact alternatives to bulk frequency combs. This could enable deployment of many comb-reli…
Superefficient microcombs at the wafer level
Marcello Girardi, Óskar B. Helgason, Carmen H. López Ortega +2
Photonic integrated circuits utilize planar waveguides to process light on a chip, encompassing functions like generation, routing, modulation, and detection. Similar to the advanc…
Compact lithium niobate photonic integrated circuits
Yan Gao, Fuchuan Lei, Marcello Girardi +4
Lithium niobate (LN) is a promising material for future complex photonic-electronic circuits, with wide applications in fields like communications, sensing, quantum optics, and com…
Hyperparametric oscillation via bound states in the continuum
Fuchuan Lei, Zhichao Ye, Krishna Twayana +5
Optical hyperparametric oscillation based on the third-order nonlinearity is one of the most significant mechanisms to generate coherent electromagnetic radiation and produce quant…
Power-efficient soliton microcombs
Óskar B. Helgason, Marcello Girardi, Zhichao Ye +3
Laser frequency combs are enabling some of the most exciting scientific endeavours in the 21st century, ranging from the development of optical clocks to the calibration of the ast…
Integrated, ultra-compact high-Q silicon nitride microresonators for low-repetition-rate soliton microcombs
Zhichao Ye, Fuchuan Lei, Krishna Twayana +3
Multiple applications of relevance in photonics, such as spectrally efficient coherent communications, microwave synthesis or the calibration of astronomical spectrographs, would b…
Optical linewidth of soliton microcombs
Fuchuan Lei, Zhichao Ye, Óskar B. Helgason +3
Soliton microcombs provide a versatile platform for realizing fundamental studies and technological applications. To be utilized as frequency rulers for precision metrology, solito…
Non-paraxial design and fabrication of a compact OAM sorter in the telecom infrared
Gianluca Ruffato, Michele Massari, Marcello Girardi +3
A novel optical device is designed and fabricated in order to overcome the limits of the traditional sorter based on log-pol optical transformation for the demultiplexing of optica…