Journal
OPTICS LETTERS
Volume 47, Issue 23, Pages 6149-6152Publisher
Optica Publishing Group
DOI: 10.1364/OL.472956
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Funding
- National Research Foundation ofKorea [2020R1A4A2002828]
- National Research Council of Science and Technology [21031-200]
- Institute for Information and Communications Technology Promotion [2020-000890, 2021-0-00552]
- KoreaAdvanced Institute of Science andTechnology (Cross-Generation Collaborative Lab)
- National Research Foundation of Korea [2020R1A4A2002828] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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This study demonstrates a two-point coupled lithium niobate racetrack micro-resonator that allows for electro-optical modulation between the zero- and critical-coupling conditions with minimal disturbance to the intrinsic properties of the resonant mode.
Controlling the optical coupling between a micro-resonator and waveguide plays a key role in on-chip photonic circuits. Here, we demonstrate a two-point coupled lithium niobate (LN) racetrack micro-resonator that enables us to electro-optically traverse a full set of the zero-, under-, critical-, and over-coupling regimes with minimized disturbance of the intrinsic properties of the resonant mode. The modulation between the zero- and critical-coupling conditions cost a resonant frequency shift of only similar to 344.2MHz and rarely changed the intrinsic quality (Q) factor of 4.6x10(5). Our device is a promising element in on-chip coherent photon storage/retrieval and its applications. (c) 2022 Optica Publishing Group
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