Fully Integrated Photonic Millimeter-Wave Tracking Generators on the Heterogeneous III–V/Si Platform

Chao, Rui-Lin; Liang, Linjun; Shi, Jin‐Wei; Komljenović, Tin; Hulme, Jared; Kennedy, M. J.; Bowers, John E.

doi:10.1109/lpt.2018.2825319

Cited by 4 publications

(2 citation statements)

References 20 publications

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“…By fully leveraging the high electro-optic coefficient of LiNbO 3 , with further improvements in photonic integrated circuit design, these devices can operate with complementary metal-oxide-semiconductor-compatible voltages, or achieve millimetre-scale distance resolution. Beyond integrated lasers, the hybrid platform can also be used to realize other functions, such as photonic microwave and millimetre-wave tracking generators 31 , switching networks for photonic computing 32 , boson sampling 33 and integrated transceivers. Moreover, the wide transparency window of both LiNbO 3 and Si 3 N 4 allows such frequency agility to be extended to other wavelength ranges, such as the mid-infrared or the visible, providing a platform for fast tunable lasers for applications in tracegas sensing 34 .…”

Section: Optical Coherent Ranging Demonstrationmentioning

confidence: 99%

Ultrafast tunable lasers using lithium niobate integrated photonics

Snigirev

Riedhauser

Lihachev

et al. 2023

Nature

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Early works1 and recent advances in thin-film lithium niobate (LiNbO3) on insulator have enabled low-loss photonic integrated circuits2,3, modulators with improved half-wave voltage4,5, electro-optic frequency combs6 and on-chip electro-optic devices, with applications ranging from microwave photonics to microwave-to-optical quantum interfaces7. Although recent advances have demonstrated tunable integrated lasers based on LiNbO3 (refs. 8,9), the full potential of this platform to demonstrate frequency-agile, narrow-linewidth integrated lasers has not been achieved. Here we report such a laser with a fast tuning rate based on a hybrid silicon nitride (Si3N4)–LiNbO3 photonic platform and demonstrate its use for coherent laser ranging. Our platform is based on heterogeneous integration of ultralow-loss Si3N4 photonic integrated circuits with thin-film LiNbO3 through direct bonding at the wafer level, in contrast to previously demonstrated chiplet-level integration10, featuring low propagation loss of 8.5 decibels per metre, enabling narrow-linewidth lasing (intrinsic linewidth of 3 kilohertz) by self-injection locking to a laser diode. The hybrid mode of the resonator allows electro-optic laser frequency tuning at a speed of 12 × 1015 hertz per second with high linearity and low hysteresis while retaining the narrow linewidth. Using a hybrid integrated laser, we perform a proof-of-concept coherent optical ranging (FMCW LiDAR) experiment. Endowing Si3N4 photonic integrated circuits with LiNbO3 creates a platform that combines the individual advantages of thin-film LiNbO3 with those of Si3N4, which show precise lithographic control, mature manufacturing and ultralow loss11,12.

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Section: Optical Coherent Ranging Demonstrationmentioning

confidence: 99%

Ultrafast tunable lasers using lithium niobate integrated photonics

Snigirev

Riedhauser

Lihachev

et al. 2023

Nature

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“…The Lorentz linewidth is less than 100 Hz; the RIN is less than −155 dBc/Hz; and, the maximum on-chip optical power is 15 mW. MRR-ECDLs are commonly used in the field of optical communications, such as in microwave generators for microwave communications [109], dense wavelength-division multiplexing (DWDM) systems, the light source of direct current transceivers [40], and coherent optical transmission [43,44].…”

Section: Waveguide-type Ecdlmentioning

confidence: 99%

Advances in wide-tuning and narrow-linewidth external-cavity diode lasers

Cui

Lei

Chen

et al. 2022

Sci. China Inf. Sci.

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The external-cavity diode laser is advantageous in terms of low noise, high side-mode suppression ratio, high temperature stability, simple structure, and low cost, which has been the preferred scheme to realize wide-tuning and narrow-linewidth characteristics. Thus, it has been widely used in optical communication, lidar, environmental monitoring, spectral analysis, optical coherence tomography, and other frontier fields. Herein, we introduce the technical scheme and review the development status of wide-tuning and narrow-linewidth external-cavity diode lasers in detail. Primarily, the structure, working principles, and performance characteristics of external-cavity diode lasers are deeply analyzed according to different structures. The structural characteristics, key technologies, optical performance and application fields of state-of-theart studies in recent years are discussed. Finally, the challenges and potential development prospects of wide-tuning and narrow-linewidth external-cavity diode lasers are analyzed and discussed.

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