A vertical T-electrode modulator with low-loss and high-speed

Jiantao He; Shaobo Li; Xiang Ma; Wanli Yang

doi:10.1117/12.3017358

15 December 2023 A vertical T-electrode modulator with low-loss and high-speed

Jiantao He, Shaobo Li, Xiang Ma, Wanli Yang

Proceedings Volume 12971, Third International Conference on Optics and Communication Technology (ICOCT 2023); 1297104 (2023) https://doi.org/10.1117/12.3017358
Event: Third International Conference on Optics and Communication Technology (ICOCT 2023), 2023, Changchun, China

Abstract

The contradiction between the limited bandwidth of optical communication and the escalating demand for faster communication speed poses an urgent problem that needs to be addressed. To enhance the transmission bandwidth of optical communication systems and reduce transmission losses, this paper proposes a vertically structured thin film lithium niobate modulator with T-electrodes. Through simulations, the electrode's structural parameters are optimized to minimize microwave losses and increase transmission bandwidth. The results demonstrate that compared to traditional T-electrode modulators, the vertical T-electrode modulator with optimized structure parameters (t=5μm, r=45μm, s=2μm, c=5μm, h=4μm) exhibits an increased modulation bandwidth from 80GHz to 100GHz while reducing microwave loss from 0.554dB/cm/Hz^1/2 to 0.399dB/cm/Hz^1/2. This optimization approach enables broader bandwidths and lower microwave losses in electrodes and presents a novel idea for electrode optimization in modulators.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Jiantao He, Shaobo Li, Xiang Ma, and Wanli Yang "A vertical T-electrode modulator with low-loss and high-speed", Proc. SPIE 12971, Third International Conference on Optics and Communication Technology (ICOCT 2023), 1297104 (15 December 2023); https://doi.org/10.1117/12.3017358

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KEYWORDS

Electrodes

Microwave radiation

Lithium niobate

Design and modelling

Optical communications

Refractive index

Thin films

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