Scholarlink

<p>Large-capacity data transmission is increasingly required to meet the growing demands of big data and artificial intelligence applications. Wavelength-division multiplexing (WDM) technology is a reliable method of increasing link capacity by enabling multiple wavelength signals to be transmitted in a single channel. Here, for the first time, a large-capacity transmitter on thin-film lithium tantalate-on-insulator (LTOI) is demonstrated by monolithically integrating an 8-channel WDM and Mach–Zehnder interferometer (MZI) electro-optic modulators (EOMs). The integrated 8-channel WDM, comprised of 8 cascaded waveguide Bragg grating optical filters, realizes channel spacing of 16.8&#xa0;nm, 1-dB bandwidth of 15.4&#xa0;nm, and thermal sensitivity of 10&#xa0;pm/ºC. The MZI EOMs show low direct current drift and 3-dB bandwidth beyond 67&#xa0;GHz. Finally, the WDM transmitter achieves a data rate of 100 Gbps OOK and 200 Gbps PAM4 for a single channel, indicating the demonstrated total capacity of 1.6 Tbps. Therefore, the demonstrated large-capacity WDM transmitter will find many applications, such as artificial intelligence and data centers.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

An 8 × 200 Gbps wavelength-division multiplexing transmitter using lithium tantalate

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年8月28日

查看全文
  • Mingyu Zhu,
  • Fei Huang,
  • Dajian Liu,
  • Weihan Wang,
  • Aoyun Gao,
  • Weike Zhao,
  • Shi Zhao,
  • Daixin Lian,
  • Chun Gao,
  • Zejie Yu,
  • Daoxin Dai

摘要

Large-capacity data transmission is increasingly required to meet the growing demands of big data and artificial intelligence applications. Wavelength-division multiplexing (WDM) technology is a reliable method of increasing link capacity by enabling multiple wavelength signals to be transmitted in a single channel. Here, for the first time, a large-capacity transmitter on thin-film lithium tantalate-on-insulator (LTOI) is demonstrated by monolithically integrating an 8-channel WDM and Mach–Zehnder interferometer (MZI) electro-optic modulators (EOMs). The integrated 8-channel WDM, comprised of 8 cascaded waveguide Bragg grating optical filters, realizes channel spacing of 16.8 nm, 1-dB bandwidth of 15.4 nm, and thermal sensitivity of 10 pm/ºC. The MZI EOMs show low direct current drift and 3-dB bandwidth beyond 67 GHz. Finally, the WDM transmitter achieves a data rate of 100 Gbps OOK and 200 Gbps PAM4 for a single channel, indicating the demonstrated total capacity of 1.6 Tbps. Therefore, the demonstrated large-capacity WDM transmitter will find many applications, such as artificial intelligence and data centers.