Advanced Photonics, Volume. 2, Issue 4, 046001(2020)
Stretching the spectra of Kerr frequency combs with self-adaptive boundary silicon waveguides
Fig. 1. (a) Dispersion curves of silicon-on-insulator (SOI) waveguides with different dimensions, including the one (gray line) from Ref. 14. Inset: Cross-section of a silicon ring resonator used for Kerr frequency comb modeling. (b), (d) The wavevector mismatch and associated spectra of frequency combs, with the working points indicated in (a). The near-bottom spectra are the corresponding primary comb lines. (c) The wavelength-dependent Kerr coefficient and its interpretation in the time domain in the single-soliton comb state, indicated by smooth and modulated curves in black. The pattern of the temporal soliton is also given in blue, corresponding to the upper (
Fig. 2. (a) Schematics of a step-index waveguide. (b) The chromatic dispersion parameter (
Fig. 3. (a) Schematic of a graded-index waveguide ensuring a self-adapting (SAB) condition. Inset: Possible a configuration comprising doped regions for free-carrier extraction. (b) Chromatic dispersion parameter
Fig. 4. (a) Chromatic dispersion parameter
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Jianhao Zhang, Vincent Pelgrin, Carlos Alonso-Ramos, Laurent Vivien, Sailing He, Eric Cassan, "Stretching the spectra of Kerr frequency combs with self-adaptive boundary silicon waveguides," Adv. Photon. 2, 046001 (2020)
Category: Research Articles
Received: Feb. 23, 2020
Accepted: Jun. 1, 2020
Posted: Jun. 1, 2020
Published Online: Jun. 28, 2020
The Author Email: Jianhao Zhang (jianhao.zhang@universite-paris-saclay.fr), Eric Cassan (eric.cassan@universite-paris-saclay.fr)