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Thermal-Controlled Scanning of a Bright Soliton in a Photonic Molecule
RISE Research Institutes of Sweden, Safety and Transport, Measurement Technology. Chalmers University of Technology, Sweden.ORCID iD: 0000-0001-8269-1033
University Jaume I, Spain.
Chalmers University of Technology, Sweden.
Chalmers University of Technology, Sweden.
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2023 (English)In: 2023 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2023, Institute of Electrical and Electronics Engineers Inc. , 2023Conference paper, Poster (with or without abstract) (Other academic)
Abstract [en]

Over the last few years, dissipative Kerr solitons (DKS) in microresonators have boosted the development of chip-scale frequency comb sources (microcombs) in a variety of applications, from coherent communications to ultrafast distance ranging [1]. However, the intrinsic large free spectral range (FSR) of microcombs (within the gigahertz regime) is still a drawback for applications such as molecular spectroscopy, in which the comb line spacing dictates the spectral sampling resolution. Overcoming spectral sparsity by scanning the comb modes across a full FSR is challenging for a DKS microcomb, since the soliton operation must be kept while the pump laser is continuously swept. So far, it has been accomplished for a single microresonator by combining a feedback control loop with the thermal tuning of the cavity resonances by means of a microheater [2]. Recently, the use of two linearly coupled cavities (a photonic molecule) has shown to be a promising alternative to generate soliton microcombs with high conversion efficiency and uniform power distribution [3]. In this contribution, we address the challenge of scanning the soliton comb modes of a photonic molecule by thermal tuning. Specifically, we implement a scheme to scan a bright soliton over 60 GHz by tuning simultaneously the pump laser and the resonances of two coupled cavities.

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers Inc. , 2023.
Keywords [en]
Conversion efficiency; Microresonators; Molecular spectroscopy; Molecules; Pumping (laser); Bright solitons; Comb modes; Coupled cavity; Free spectral range; Kerr solitons; Micro resonators; Microcombs; Photonic molecules; Pump laser; Thermal tuning; Solitons
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:ri:diva-68014DOI: 10.1109/CLEO/EUROPE-EQEC57999.2023.10231468Scopus ID: 2-s2.0-85175734356OAI: oai:DiVA.org:ri-68014DiVA, id: diva2:1814260
Conference
2023 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2023. Munich, Germany. 26 June 2023 through 30 June 2023
Available from: 2023-11-23 Created: 2023-11-23 Last updated: 2023-11-30Bibliographically approved

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Rebolledo-Salgado, IsraelZelan, Martin

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