Soliton Microcombs Multiplexing Using Intracavity-Stimulated Brillouin Lasers

Zhang, Hao; Tan, Teng; Chen, Hao-Jing; Yu, Yan; Wang, Wenting; Chang, Bing; Liang, Yupei; Guo, Yanhong; Zhou, Heng; Xia, Handing; Gong, Qihuang; Wong, Chee Wei; Rao, Yiheng; Xiao, Yun‐Feng; Yao, Baicheng

doi:10.1103/physrevlett.130.153802

Cited by 24 publications

(5 citation statements)

References 44 publications

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“…Comb multiplexing technologies [72] hold promise in supplying additional discrete wavelength channels for the MWP transversal signal processors, which is beneficial for improving their processing accuracy. However, the augmentation of wavelength channels would also lead to a reduction in the channel spacing or processing bandwidth for the MWP transversal signal processors.…”

Section: Discussionmentioning

confidence: 99%

Processing Accuracy of Microcomb-Based Microwave Photonic Signal Processors for Different Input Signal Waveforms

Li,

Sun,

et al. 2023

Photonics

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Microwave photonic (MWP) signal processors, which process microwave signals based on photonic technologies, bring advantages intrinsic to photonics such as low loss, large processing bandwidth, and strong immunity to electromagnetic interference. Optical microcombs can offer a large number of wavelength channels and compact device footprints, which make them powerful multi-wavelength sources for MWP signal processors to realize a variety of processing functions. In this paper, we experimentally demonstrate the capability of microcomb-based MWP signal processors to handle diverse input signal waveforms. In addition, we quantify the processing accuracy for different input signal waveforms, including Gaussian, triangle, parabolic, super Gaussian, and nearly square waveforms. Finally, we analyse the factors contributing to the difference in the processing accuracy among the different input waveforms, and our theoretical analysis well elucidates the experimental results. These results provide guidance for microcomb-based MWP signal processors when processing microwave signals of various waveforms.

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Section: Discussionmentioning

confidence: 99%

Processing Accuracy of Microcomb-Based Microwave Photonic Signal Processors for Different Input Signal Waveforms

Li,

Sun,

et al. 2023

Photonics

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“…1 b. The advantage of near-zero-dispersion microresonators is that the small group velocity dispersion (GVD) enables a small spectral deviation [ 33 , 35 ]. Microresonators with a samllfree spectral range were preferred to ensure that there were sufficient comb teeth.…”

Section: Chaotic Combs Based On Microresonatormentioning

confidence: 99%

Massive and parallel 10 Tbit/s physical random bit generation with chaotic microcomb

Hu,

Bai,

Tang

et al. 2023

Front. Optoelectron.

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Ultrafast physical random bit (PRB) generators and integrated schemes have proven to be valuable in a broad range of scientific and technological applications. In this study, we experimentally demonstrated a PRB scheme with a chaotic microcomb using a chip-scale integrated resonator. A microcomb contained hundreds of chaotic channels, and each comb tooth functioned as an entropy source for the PRB. First, a 12 Gbits/s PRB signal was obtained for each tooth channel with proper post-processing and passed the NIST Special Publication 800-22 statistical tests. The chaotic microcomb covered a wavelength range from 1430 to 1675 nm with a free spectral range (FSR) of 100 GHz. Consequently, the combined random bit sequence could achieve an ultra-high rate of about 4 Tbits/s (12 Gbits/s × 294 = 3.528 Tbits/s), with 294 teeth in the experimental microcomb. Additionally, denser microcombs were experimentally realized using an integrated resonator with 33.6 GHz FSR. A total of 805 chaotic comb teeth were observed and covered the wavelength range from 1430 to 1670 nm. In each tooth channel, 12 Gbits/s random sequences was generated, which passed the NIST test. Consequently, the total rate of the PRB was approximately 10 Tbits/s (12 Gbits/s × 805 = 9.66 Tbits/s). These results could offer potential chip solutions of Pbits/s PRB with the features of low cost and a high degree of parallelism. Graphical Abstract

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“…In addition, the frequency synthesis based on dual combs further offers a tool for converting optical frequencies down to radio frequencies. This technique enables the illustration of broadband spectra while avoiding the need for large optical spectrometers with moving parts and limited optical bandwidth ( 36 , 37 ). It provides unique high resolution in heterodyne measurements for applications such as ranging, force detection, gas spectroscopy, ultrasonic detection, and photoacoustic imaging ( 38 – 42 ).…”

Section: Introductionmentioning

confidence: 99%

Coherently parallel fiber-optic distributed acoustic sensing using dual Kerr soliton microcombs

Li,

Chang,

et al. 2024

Sci. Adv.

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Fiber-optic distributed acoustic sensing (DAS) has proven to be a revolutionary technology for the detection of seismic and acoustic waves with ultralarge scale and ultrahigh sensitivity, and is widely used in oil/gas industry and intrusion monitoring. Nowadays, the single-frequency laser source in DAS becomes one of the bottlenecks limiting its advance. Here, we report a dual-comb–based coherently parallel DAS concept, enabling linear superposition of sensing signals scaling with the comb-line number to result in unprecedented sensitivity enhancement, straightforward fading suppression, and high-power Brillouin-free transmission that can extend the detection distance considerably. Leveraging 10-line comb pairs, a world-class detection limit of 560 fε/√Hz@1 kHz with 5 m spatial resolution is achieved. Such a combination of dual-comb metrology and DAS technology may open an era of extremely sensitive DAS at the fε/√Hz level, leading to the creation of next-generation distributed geophones and sonars.

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Soliton Microcombs Multiplexing Using Intracavity-Stimulated Brillouin Lasers

Cited by 24 publications

References 44 publications

Processing Accuracy of Microcomb-Based Microwave Photonic Signal Processors for Different Input Signal Waveforms

Processing Accuracy of Microcomb-Based Microwave Photonic Signal Processors for Different Input Signal Waveforms

Massive and parallel 10 Tbit/s physical random bit generation with chaotic microcomb

Coherently parallel fiber-optic distributed acoustic sensing using dual Kerr soliton microcombs

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