GOALI: Integrated Synthesized Optical Sources

标题：集成合成光源这项研究的成功可能导致第一个广泛可调的集成合成光源，它将比目前可用的组件更稳定，并且对尺寸、重量和功率的要求更小。光子和电子集成的结合将产生一种不需要精确温度控制或高输入功率即可工作的芯片级可调谐光源。该项目的目标合作伙伴Freedom Photonics LLC.打算将拟议中的设备的某些版本商业化，这可能会影响光学元件市场。新技术将在NSF-NNIN设施内开发，新的制造工艺将向学生和外部用户提供。PIS致力于让高中生和本科生参与研究活动，包括暑期实习，以及在STEM学习计划中代表不足的群体的学生。拟议的研究旨在开发一种高度集成、可广泛调谐的光学频率合成器(OFS)，具有亚赫兹级别的精度。集成的OFS是基于一个单片、4段、宽可调的激光偏置锁定到频率梳的任何一条线上的。通过采用光子和电子集成的组合，集成光学锁相环(OPLL)技术可以获得亚赫兹级别的精度。除了外部参考激光器、光电二极管和梳子发生器之外，所有的光子学都将集成在单一的InP光子IC上。可调谐激光器的输出可以通过调谐带有RF偏移源的梳状线之间的激光，并交替选择不同的梳状线来在整个梳子上进行调谐。使用这种方法，应该可以达到亚赫兹级别的相对频率精度，以及亚千赫的线宽。如果成功，拟议的工作将对一系列新光学技术的光学系统设计产生革命性影响。

Title: Integrated Synthesized Optical SourcesThe successful pursuit of this research could lead to the first widely-tunable, integrated synthesized optical sources, which would be much more stable, and have smaller size, weight and power requirements than components currently available. The combination of photonic and electronic integration will produce a chip-scale tunable sources that do not require accurate temperature control or high input power to operate. The project's GOALI partner, Freedom Photonics LLC., intends to commercialize some version of the proposed device that may impact the optical components marketplace. The new technology will be developed within the NSF-NNIN facility and the new fabrication processes will be made to students and outside users. The PIs have a strong commitment to involving high school, and undergraduate students in research activities, including summer internships, and students of under-represented groups in STEM learning programs.The proposed research aims to develop a highly-integrated widely-tunable optical frequency synthesizer (OFS) with sub-Hz-level accuracy. The integrated OFS is based on a monolithic, 4-section, widely-tunable laser offset-locked to any one of the lines of a frequency comb. By employing a combination of photonic and electronic integration, sub-Hz-level accuracy can be obtained with an integrated optical phase-locked loop (OPLL) technology. All of the photonics, except for the external reference laser, the photodiodes, and the comb generator, will be integrated on a single InP photonic IC . The tunable laser's output can be tuned across the entire comb by tuning the laser between the comb lines with the RF offset source, and alternately selecting different comb lines. With this approach sub-Hz-level relative frequency accuracy, as well as sub-kHz linewidth, should be possible. If successful, the proposed work would have a transformative impact on the design of optical systems for a series of new optical technologies.