PFI-TT:Development of an efficient fiber interface for Integrated lithium-niobate Modulators.

PFI-TT：开发用于集成铌酸锂调制器的高效光纤接口。

• 批准号: 1827720
• 负责人: Marko Loncar
• 金额: $ 20万
• 依托单位: Harvard University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2018
• 资助国家: 美国
• 起止时间: 2018-08-15 至 2020-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1827720&HistoricalAwards=false
• 关键词: PFI; TT; Development; efficient; fiber

The broader impact/commercial potential of this PFI project is to enable better connectivity and big data revolution. High-speed optical fiber links are responsible for transmitting enormous amount of data and are the backbone of internet. However, the existing optical networks, that transmit our multimedia emails, music and video streaming, cannot meet the demands for more bandwidth and reduced energy consumption. One of the limiting factors is a modulator device that converts information from electrical to optical domain. This program will address this, and develop a fully integrated and packaged modulator prototype that will meet the societal needs for better connectivity. The target markets for the technology will be providers of computer and telecommunication network equipment, data- and computing-center owners, and network-service providers. In addition, the research community, specialty measurement equipment manufacturers, and defense contractors, will benefit from the developed technology. The program has a theoretical and experimental component and addresses both fundamental and engineering aspects of photonics, optoelectronics, and communication systems.The proposed project will address the efficiency with which light can be brought onto a lithium-niobate modulator chip. As recently demonstrated, thin film lithium-niobate photonic platform allows for realization of high speed modulators ( 100 GHz) that operate at low voltages (~ 1 V) and feature very low loss, and that therefore can meet the demands for better connectivity and higher data rates. However, due to their sub-micron scale, these modulators cannot be efficiently connectorized to optical fibers, which results in large optical losses ( 7 dB/ facet). This significantly affects the usefulness of these devices, and limits them to laboratory demonstrations, only. To address this, the team will develop techniques to reduce coupling efficiency to ~ 1dB/ facet, and use this to develop fully packaged and pig-tailed modulator prototype. These will then be benchmarked against the state of the art technologies, as well as for customer development activities.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

该 PFI 项目更广泛的影响/商业潜力是实现更好的连接和大数据革命。高速光纤链路负责传输大量数据，是互联网的骨干。然而，传输多媒体电子邮件、音乐和视频流的现有光网络无法满足更多带宽和降低能耗的需求。限制因素之一是将信息从电域转换到光域的调制器设备。该计划将解决这个问题，并开发一个完全集成和封装的调制器原型，以满足社会对更好连接的需求。该技术的目标市场将是计算机和电信网络设备提供商、数据和计算中心所有者以及网络服务提供商。此外，研究界、专业测量设备制造商和国防承包商也将受益于所开发的技术。该计划包含理论和实验部分，涉及光子学、光电子学和通信系统的基础和工程方面。拟议的项目将解决光进入铌酸锂调制器芯片的效率。正如最近所证明的，薄膜铌酸锂光子平台可以实现高速调制器（100 GHz），该调制器在低电压（~ 1 V）下运行并且具有非常低的损耗，因此可以满足更好的连接性和更高的要求。数据速率。然而，由于其亚微米尺度，这些调制器无法有效地连接到光纤，从而导致较大的光损耗（7 dB/面）。这极大地影响了这些设备的实用性，并将它们仅限于实验室演示。为了解决这个问题，该团队将开发技术，将耦合效率降低至约 1dB/facet，并利用该技术开发完全封装的尾纤调制器原型。然后，这些奖项将以最先进的技术以及客户开发活动为基准。该奖项反映了 NSF 的法定使命，并通过使用基金会的智力优点和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

Integrated photonics on thin-film lithium niobate

薄膜铌酸锂上的集成光子学

• DOI: 10.1364/aop.411024
• 发表时间: 2021-05
• 期刊: Advances in Optics and Photonics
• 影响因子: 27.1
• 作者: Zhu, Di;Shao, Linbo;Yu, Mengjie;Cheng, Rebecca;Desiatov, Boris;Xin, C. J.;Hu, Yaowen;Holzgrafe, Jeffrey;Ghosh, Soumya;Shams;et al
• 通讯作者: et al

Chip-based self-referencing using integrated lithium niobate waveguides

使用集成铌酸锂波导的基于芯片的自参考

• DOI: 10.1364/optica.392363
• 发表时间: 2020-03-25
• 期刊: Optica
• 影响因子: 10.4
• 作者: Yoshitomo Okawachi;Mengjie Yu;B. Desiatov;Bok Young Kim;T. Hansson;Marko Lonvcar;A. Gaeta
• 通讯作者: A. Gaeta

Silicon photodetector for integrated lithium niobate photonics

用于集成铌酸锂光子学的硅光电探测器

• DOI: 10.1063/1.5118901
• 发表时间: 2019-09
• 期刊: Applied Physics Letters
• 影响因子: 4
• 作者: Desiatov, Boris;Lončar, Marko
• 通讯作者: Lončar, Marko

On-chip electro-optic frequency shifters and beam splitters

片上电光移频器和分束器

• DOI: 10.1038/s41586-021-03999-x
• 发表时间: 2020-05-19
• 期刊: Nature
• 影响因子: 64.8
• 作者: Yaowen Hu;Mengjie Yu;Di Zhu;N. Sinclair;A. Shams;Linbo Shao;Jeffrey Holzgrafe;Eric Puma;Mian Zhang;M. Lončar
• 通讯作者: M. Lončar

Integrated microwave acousto-optic frequency shifter on thin-film lithium niobate

薄膜铌酸锂集成微波声光移频器

• DOI: 10.1364/oe.397138
• 发表时间: 2020-07
• 期刊: Optics Express
• 影响因子: 3.8
• 作者: Shao, Linbo;Sinclair, Neil;Leatham, James;Hu, Yaowen;Yu, Mengjie;Turpin, Terry;Crowe, Devon;Lončar, Marko
• 通讯作者: Lončar, Marko