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arXiv · 2207.06836

Differential phase reconstruction of microcombs

Krishna Twayana·Fuchuan Lei·Zhichao Ye·Israel Rebolledo-Salgado·Oskar B. Helgason·Magnus Karlsson·Victor Torres-Company
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Abstract

Measuring microcombs in amplitude and phase provides unique insight into the nonlinear cavity dynamics but spectral phase measurements are experimentally challenging. Here, we report a linear heterodyne technique assisted by electro-optic downconversion that enables differential phase measurement of such spectra with unprecedented sensitivity (-50 dBm) and bandwidth coverage (> 110 nm in the telecommunications range). We validate the technique with a series of measurements, including single cavity and photonic molecule microcombs.

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Krishna Twayana, Fuchuan Lei, Zhichao Ye, Israel Rebolledo-Salgado, Oskar B. Helgason, Magnus Karlsson, Victor Torres-Company. 2022-07-14. Differential phase reconstruction of microcombs. https://arxiv.org/abs/2207.06836

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