High-efficiency and broadband electro-optic frequency combs enabled by coupled micro-resonators
arXiv:2111.14743 · doi:10.1038/s41566-022-01059-y
Abstract
Developments in integrated photonics have led to stable, compact, and broadband comb generators that support a wide range of applications. Current on-chip comb generators, however, are still limited by low optical pump-to-comb conversion efficiencies. Here, we demonstrate an integrated electro-optic frequency comb with a conversion efficiency of 30% and an optical bandwidth of 132 nm, featuring a 100-times higher conversion efficiency and 2.2-times broader optical bandwidth compared with previous state-of-the-art integrated electro-optic combs. We further show that, enabled by the high efficiency, the device acts as an on-chip femtosecond pulse source (336 fs pulse duration), which is important for applications in nonlinear optics, sensing, and computing. As an example, in the ultra-fast and high-power regime, we demonstrate the observation of a combined EO-χ^(3) nonlinear frequency comb. Our device paves the way for practical optical frequency comb generators enabling energy-efficient computing, communication, and metrology, and provides a platform to investigate new regimes of optical physics that simultaneously involve multiple nonlinearities.
References in corpus (6)
- 11 TeraFLOPs per second photonic convolutional accelerator for deep learning optical neural networks
- Frequency comb spectroscopy
- Integrated micro-comb sources for quantum optical applications
- Frequency-encoded photonic qubits for scalable quantum information processing
- Strong polarization mode coupling in microresonators
- Nonlinear states and dynamics in a synthetic frequency dimension
Cited by in corpus (22)
- Lithium tantalate electro-optical photonic integrated circuits for high volume manufacturing
- Power-efficient soliton microcombs
- A power-efficient integrated lithium niobate electro-optic comb generator
- Integrated Triply Resonant Electro-Optic Frequency Comb in Lithium Tantalate
- A comprehensive review on developments of synthetic dimensions
- Zero-Added-Loss Entangled Photon Multiplexing for Ground- and Space-Based Quantum Networks
- Mirror-induced reflection in the frequency domain
- High-power and narrow-linewidth laser on thin-film lithium niobate enabled by photonic wire bonding
- A conformal mapping approach to broadband nonlinear optics on chip
- Toward ultimate-efficiency frequency conversion in nonlinear optical microresonators
- Quantum-enhanced absorption spectroscopy with bright squeezed frequency combs
- Highly efficient visible and near-IR photon pair generation with thin-film lithium niobate
- Spectral engineering of optical microresonators in anisotropic lithium niobate crystal
- Two-mode squeezing over deployed fiber coexisting with conventional communications
- Low-power, agile electro-optic frequency comb spectrometer for integrated sensors
- Soliton microcombs in X-cut LiNbO3 microresonators
- Photonic crystal cavity IQ modulators in thin-film lithium niobate for coherent communications
- Optical Arbitrary Waveform Generation (OAWG) Using Actively Phase-Stabilized Spectral Stitching
- High-efficiency coupled-cavity optical frequency comb generation
- Efficient high-quality photon pair generation in modal phase-matched thin-film lithium niobate micro-ring resonators
- Multimode Single-Ring Photonic Molecule
- Pump-Threshold-Free Frequency Comb via Cavity Floquet Engineering