Erbium-doped lithium niobate on insulator (Er:LNOI) has attracted enormous interest as it provides gain and enables integrated amplifiers lasers the (LNOI) platform. We demonstrate a highly efficient waveguide amplifier Er:LNOI. The 2.58-cm long can achieve 27.94 dB signal enhancement, 16.0 internal net (6.20 dB/cm), −8.84 dBm saturation power, 4.59 dB/mW power conversion efficiency, 4.49 noise figure at 1531.6 nm. Besides, thorough investigation pumping wavelength, scheme, output have been...

Erbium-doped lithium niobate on insulator (Er:LNOI) is a promising platform for photonic integrated circuits as it adds gain to the LNOI system and enables on-chip lasers amplifiers. A challenge Er:LNOI laser increase its output power while maintaining single-frequency single (-transverse)-mode operation. In this work, we demonstrate that single-mode operation can be achieved even in multi-mode microring by introducing mode-dependent loss competition. with free spectral range of 192 GHz,...

The developing advances of microresonator-based Kerr cavity solitons have enabled versatile applications ranging from communication, signal processing to high-precision measurements. Resonator dispersion is the key factor determining comb dynamics. Near zero group-velocity-dispersion (GVD) regime, low-noise and broadband microcomb sources are achievable, which crucial application soliton. When GVD almost vanished, higher-order can significantly affect Although many studies investigated...

We demonstrate a blind zone-suppressed and flash-emitting solid-state Lidar based on lens-assisted beam-steering technology. As proof-of-concept demonstration, with the design of subwavelength-gap 1D long-emitter array multiwavelength flash beam emitting, device was measured to have 5% zone suppression, 0.06°/point-deflection step, 4.2 μs scanning speed. In time-of-flight ranging experiments, systems field view <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"...

We demonstrate a monolithic tunable dual-wavelength laser fabricated on erbium-doped lithium niobate an insulator (Er:LNOI). The enables independent tuning with continuously linear electro-optic (EO)-modulated range of 11.875 GHz at efficiency 0.63 pm/V. Tunable microwave generation within 50 maximum extinction ratio 35 dB is experimentally demonstrated by further exploring the charge accumulation effect in LNOI. design this work paves way for microscale integration devices, presenting...

The erbium-doped lithium niobate on insulator (Er:LNOI) platform has great promise in the application of telecommunication, microwave photonics, and quantum due to its excellent electro-optic, piezo-electric, nonlinear nature, as well gain characteristics telecommunication C-band. Here, we report a single-frequency Er:LNOI integrated laser based dual-cavity structure. Facilitated by Vernier effect competition, can operate stably at 1531 nm wavelength with 1484 pump laser. output power 0.31...

Quantum resources offer intrinsic randomness that is valuable for applications such as cryptography, scientific simulation, and computing. Silicon-based photonics chips present an excellent platform the cost-effective deployment of next-generation quantum systems on a large scale, even at room temperature. Nevertheless, potential susceptibility these to hacker control poses challenge in ensuring security on-chip random number generation, which crucial enabling extensive utilization...

Fiber-based Fabry-Pérot (F-P) microresonator is an attractive Kerr resonator platform that has the advantages of easy coupling, simple mode profiles, and flexible dispersion engineering. Due to its relatively low nonlinear coefficient, fiber F-P usually adopts pulsed pump scheme. However, there still a lack linear stability analysis for pulsed-driven microresonator, resulting in inaccurate predictions intracavity power phase-matching wavelength. In this article, we derived steady-state...

Dissipative Kerr nonlinear cavities attract intense interest due to their rich dynamics and capability generate broadband, low-noise, mode-locked optical frequency combs for applications in communications, dual-comb spectroscopy, photonic lidar, etc. Different from the effect, which is an electronic response, stimulated Raman scattering (SRS) a delayed response molecular vibrations materials. In microcavities, when driven anomalous group velocity dispersion (GVD) regime, SRS typically leads...

Erbium-doped lithium niobate on insulator (Er:LNOI) has attracted enormous interest as it provides gain and enables integrated amplifiers lasers the (LNOI) platform. We demonstrate a highly efficient waveguide amplifier Er:LNOI. The 2.58-cm long can achieve 27.94 dB signal enhancement, 16.0 internal net (6.20 dB/cm), -8.84 dBm saturation power, 4.59 dB/mW power conversion efficiency, 4.49 noise figure at 1531.6 nm. Besides, thorough investigation pumping wavelength, scheme, output have been...

A 15°*12° integrated two-dimensional beam-steering device based on an on-chip silicon-nitride switch/emitter structure and off-chip cylindrical lens is demonstrated. The staircase grating emitters allow a directional emission greater than 90%.

We demonstrate an efficient erbium-doped waveguide amplifier based on lithium niobate thin film. With a 2.8 cm-long amplifier, optical signal at 1531.6 nm can achieve maximum total gain of 24.8 dB.

The monolithic erbium-doped lithium niobate lasers can achieve a tunable wavelength range of 56.25 GHz and generate 50 microwave signal with side-mode suppression ratio 35 dB by dual lasers.

The 10-cm long erbium-doped lithium niobate waveguide amplifier can achieve 52.2 dB signal enhancement with a 22.2 internal net gain at 1531 nm, which exceeds 20 45% wavelengths of the C-band.

A dual-comb FMCW Lidar with coherent comb stitching (CCS) technique is firstly demonstrated. CCS can simultaneously achieve 65 GHz high frequency sweeping range, millimeter-level ranging resolution and 100 kHz voxel acquisition rate.

We demonstrate a hybrid-integrated linear-chirp frequency-modulated continuous wave laser based on self-injection locking to high-Q lithium niobate multimode microring resonator with 1 kHz linewidth and MHz modulation speed.

We propose a coherent stitching method by exploring the coherence in different beat notes dual-comb Lidar. An equivalent sweeping bandwidth of 70 GHz and voxel rate 100 kHz are achieved.

Erbium-doped thin-film lithium niobate (Er:TFLN) provides efficient solutions for monolithic integrated waveguide amplifiers and lasers, as well the potential electro-optic modulation nonlinear application. However, gain saturation absorption characteristics usually lack dynamic analysis, which is highly valuable various devices. We provide a practical framework correlating erbium signal wavelength/power in erbium-doped amplifier (EDWA) on Er:TFLN platform, demonstrating performance of...

The existence of the end face reflection in collimator lens seriously affects performance coherent Lidar based on phase-modulated continuous wave (PMCW). We present an algorithm to eliminate basing its characteristic periodic digital modulation. Ultimately, with this algorithm, effective distance is increased 90m when emitted optical power 50mw.

A Lidar system based on lens assisted two-dimensional beam steering at 1550nm is demonstrated. The has 19m measurement distance and 4*4 scanning points, indicating the potential of integrated technology for applications.

We demonstrate an erbium-doped waveguide amplifier on lithium niobate insulator. The 2.58-cm long has 27.94 dB total gain (signal enhancement), 6.20 dB/cm net gain, and 3.48 noise figure at 1531.6 nm. © 2021 Author(s)

Different from the Kerr effect,stimulated Raman scattering (SRS) is a delayed response to molecular vibrations in materials. In microcavities, when driven an anomalous group velocity dispersion (GVD) regime, SRS typically leads self-frequency shift of solitons and generation breather which have been verified both theoretically experimentally. However, normal GVD recent theoretical work predicts that can cause locking switching waves (SWs) thus support bright moving localized structures...