Electro-optic control of the external coupling strength of a high-quality-factor lithium niobate micro-resonator.
Opt Lett
; 47(23): 6149-6152, 2022 Dec 01.
Article
em En
| MEDLINE
| ID: mdl-37219194
ABSTRACT
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 â¼344.2â
MHz and rarely changed the intrinsic quality (Q) factor of 4.6 × 105. Our device is a promising element in on-chip coherent photon storage/retrieval and its applications.
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MEDLINE
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En
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Opt Lett
Ano de publicação:
2022
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Article