Efficient electro-optical tuning of an optical frequency microcomb on a monolithically integrated high-Q lithium niobate microdisk.

  title={Efficient electro-optical tuning of an optical frequency microcomb on a monolithically integrated high-Q lithium niobate microdisk.},
  author={Zhiwei Fang and Haipeng Luo and Jintian Lin and Min Wang and Jianhao Zhang and Rongbo Wu and Junxia Zhou and Wei Chu and Tao Lu and Ya Cheng},
  journal={Optics letters},
  volume={44 24},
We demonstrate efficient tuning of a monolithically integrated lithium niobate (LN) microdisk optical frequency microcomb. Utilizing the high optical quality (Q) factor (i.e., Q∼7.1×106) of the microdisk, the microcomb spans over a spectral bandwidth of ∼200nm at a pump power as low as 20.4 mW. Combining the large electro-optic coefficient of LN and the optimum design of the geometry of microelectrodes, we demonstrate electro-optical tuning of the comb with a spectral range of 400 pm and a… 
High-quality-factor Optical Microresonators Fabricated on Lithium Niobite Thin Film with an Electro-optical Tuning Range Spanning Over One Free Spectral Range
We demonstrate high quality (intrinsic Q factor ~2.8×106) racetrack microresonators fabricated on lithium niobate (LN) thin film with a free spectral range (FSR) of ~86.38 pm. By integrating
High-quality-factor optical microresonators fabricated on lithium niobate thin film with an electro-optical tuning range spanning over one free spectral range [Invited]
We demonstrate high-quality (intrinsic Q factor ∼2.8 × 106) racetrack microresonators fabricated on lithium niobate thin film with a free spectral range (FSR) of ∼86 pm. By integrating
Electro-optically tunable microdisk laser on Er3+-doped lithium niobate thin film
We report an electro-optically (EO) tunable microdisk laser fabricated on the erbium (Er3+)-doped lithium niobate on insulator (LNOI) substrate. By applying a variable voltage on a pair of integrated
Efficient Dual-Polarized Electro-Optically Tunable Microresonators by Utilization of Ultra-Thin Transparent Electrode
High-efficiency electro-optic tuning of microresonators both for TE and TM polarizations is important for versatile advanced photonic applications. This work demonstrates a new device design to
Microresonators in Lithium Niobate Thin Films
Leveraging the outstanding nonlinear optical properties and the ultra‐high spatial confinement of light, microresonators based on lithium niobate (LN) thin films have emerged as intriguing elements
All-Fiber Hyperparametric Generation Based on a Monolithic Fiber Fabry–Pérot Microresonator
Hyperparametric oscillation is essential for coherent optical signal generation in a broad wavelength range. Integration in a compact system, such a broadband light source, is of special interest for
Ultra-low loss lithium niobate photonics
We report fabrication and characterization of ultra-low loss optical waveguides and optical micro-resonators on lithium niobate on insulator with excellent surface qualities. We demonstrate
Efficient light coupling between an ultra-low loss lithium niobate waveguide and an adiabatically tapered single mode optical fiber.
This work demonstrates, both numerically and experimentally, that the mode-field mismatch between an optical fiber and the single-mode lithium niobate waveguide can be solved with a tapered single mode fiber of an optimized mode field profile.
Advances in on-chip photonic devices based on lithium niobate on insulator
Crystalline lithium niobate (LN) is an important optical material because of its broad transmission window that spans from ultraviolet to mid-infrared and its large nonlinear and electro-optic
Soliton Microcombs in Integrated Chalcogenide Microresonators
Photonic integrated microcombs have enabled advanced applications in optical communication, microwave synthesis, and optical metrology, which in nature unveil an optical dissipative soliton pattern


On-chip electro-optic tuning of a lithium niobate microresonator with integrated in-plane microelectrodes.
Electro-optic tuning of an on-chip lithium niobate microresonator with integrated in-plane microelectrodes with a high electro-optical tuning coefficient is demonstrated.
Real-time electrical tuning of an optical spring on a monolithically integrated ultrahigh Q lithium nibote microresonator.
An ultrahigh quality (Q∼107) factor lithium niobate whispering gallery microresonator monolithically integrated with inplane microelectrodes is reported, and real-time electrical tuning of the optomechanical frequency is demonstrated with an electromechanical tuning efficiency around -134  kHz/100‬V.
Electrical tuning and switching of an optical frequency comb generated in aluminum nitride microring resonators.
On-chip reversible on/off switching of the optical frequency comb generated by an AlN microring resonator is demonstrated and the controlled comb electro-optic response is investigated for direct comparison with the transient thermal effect.
Monolithic lithium niobate photonic circuits for Kerr frequency comb generation and modulation
It is demonstrated that comb generation and second-order functionalities can be monolithically integrated on a single lithium niobate chip, paving the way towards monolithic integrated frequency comb solutions for spectroscopy, data communication, ranging and quantum photonics.
Lithium niobate micro-disk resonators of quality factors above 107.
Nonlinear processes including second-harmonic generation and Raman scattering have been demonstrated in the fabricated microdisk.
Fabrication of high-Q lithium niobate microresonators using femtosecond laser micromachining
We report on fabrication of high-Q (i.e., a quarter million) lithium niobate whispering-gallery-mode microresonators using femtosecond laser micromachining. Second harmonic generation with a
Soliton microcomb generation at 2  μm in z-cut lithium niobate microring resonators.
Chip-based soliton frequency combs have been demonstrated on various material platforms, offering broadband, mutually coherent, and equally spaced frequency lines desired for many applications.
Mid-infrared optical frequency combs at 2.5 μm based on crystalline microresonators
This work demonstrates a novel approach to create mid-infrared optical frequency combs via four-wave mixing in a continuous-wave pumped ultra-high Q crystalline microresonator made of magnesium fluoride, which holds promise for new approaches to molecular spectroscopy.
Photonic-chip-based frequency combs
Recent developments in chip-based nonlinear photonics offer the tantalizing prospect of realizing many applications that can use optical frequency comb devices that have form factors smaller than 1
Thermal tuning of Kerr frequency combs in silicon nitride microring resonators.
This paper characterize the thermal tuning of a coherent Kerr frequency comb generated from an on-chip silicon nitride microring, and the time-dependent thermal response of the microheater based tuning scheme is characterized.