波克尔效应
光学
硅光子学
消光比
调制(音乐)
光子集成电路
铌酸锂
相位调制
光调制器
光子学
材料科学
电光调制器
带宽(计算)
光电子学
物理
波长
计算机科学
电信
激光器
相位噪声
声学
作者
Jian Shen,Yong Zhang,Chenglong Feng,Zihan Xu,Lei Zhang,Yikai Su
出处
期刊:Optics Letters
[The Optical Society]
日期:2023-11-21
卷期号:48 (23): 6176-6176
摘要
Integrated electro-optic modulators are key components in photonic integrated circuits. Silicon photonic technology is considered to be promising for large-scale and low-cost integration. However, silicon does not exhibit any Pockels effect, and the electro-optic modulator based on free-carrier dispersion suffers from challenges such as high-power consumption, limited bandwidth, and large optical propagation loss. Here, a new, to the best of our knowledge, hybrid lithium tantalite-silicon platform is proposed for electro-optic modulators based on the Pockels effect. Benefiting from the strong Pockels coefficients of a thin-film lithium tantalite, a hybrid microring-based modulator is demonstrated. The quality factor and the extinction ratio of the hybrid microring are 1.7 × 10 4 and 10 dB, respectively. The linear bidirectional wavelength tuning efficiency is measured as 12.8 pm/V. The measured 3-dB bandwidth is > 20 GHz. High-quality eye diagrams of 20 Gbps non-return-to-zero signal and 20 Gbps four-level pulse amplitude modulation signals are generated experimentally. The proposed platform extends the toolbox of silicon photonics technology, which paves the way for high-speed modulators and phase shifters in optical communication and optical phased array. © 2023 Optica Publishing Group
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