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9 October 2021 RF spectrum measurement of the versatile microcavity soliton combs
Hao Hu, Ruolan Wang, Liao Chen, Weiqiang Wang, Chi Zhang, Wenfu Zhang, Xinliang Zhang
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Proceedings Volume 11894, Optoelectronic Devices and Integration X; 118941B (2021) https://doi.org/10.1117/12.2602760
Event: SPIE/COS Photonics Asia, 2021, Nantong, JS, China
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Abstract
Dissipative Kerr solitons generated in microresonators driven by a continuous wave pump laser have promise for widespread applications in spectroscopy and telecommunications. From the perspective of basic physics research, DKSs exhibit rich nonlinear phenomena and serve as a unique platform to study nonlinear physics. In this paper, an optimized all-optical radio frequency (RF) spectrum analyzer, also named frequency domain light intensity spectrum analyzer (f-LISA), is used to characterize the various stable soliton states. Results show that the optimized f-LISA achieves a measurement bandwidth of 2.2 THz and a frame rate of 20.62 MHz. Therefore, the versatile RF spectral patterns of stable two-soliton states have successfully recorded by f-LISA. More importantly, the relative azimuthal angles between two solitons within the round-trip can be extracted by applying an inverse Fourier transform to the RF spectra, indicating that the ultra-fast and broadband RF spectral measurement enable the visualization of soliton motion. It is believed that the f-LISA can function as a powerful and useful tool to monitor the rich nonlinear dynamical phenomena such as soliton number switching in the microresonators
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Hao Hu, Ruolan Wang, Liao Chen, Weiqiang Wang, Chi Zhang, Wenfu Zhang, and Xinliang Zhang "RF spectrum measurement of the versatile microcavity soliton combs", Proc. SPIE 11894, Optoelectronic Devices and Integration X, 118941B (9 October 2021); https://doi.org/10.1117/12.2602760
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KEYWORDS
Solitons
Microresonators
Spectrum analysis
Nonlinear optics
Optical microcavities
Transient nonlinear optics
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