U.S.-Turkey Cooperative Research: Guided-Wave Polarization Sensitive Couplers and Polarization Converters in GaAs/AlGaAs

产品描述：该奖项旨在支持加州大学圣巴巴拉分校（UCSB）电气与计算机科学系Nadir Dagli博士和土耳其安卡拉Bilkent大学物理系Atilla Aydinli博士之间的合作项目。 本研究的目的是在GaAs/AlGaAs材料系统中研制导波偏振敏感耦合器和偏振转换器，并最终将其用于偏振无关的超快行波电光调制器的实现。 UCSB目前的工作已经产生了具有超过40 GHz的电带宽的行波电光调制器。 这些调制器具有相对高的开关电压、与光纤耦合时的过度损耗，并且仅对TE偏振工作。 计划中的工作将寻求生产具有低开关电压和低光纤耦合损耗的设备。 拟议的工作包括将UCSB开发的软件转移给Bilkent团队，以用于生产调制器设备。 这些器件以及UCSB生产的其他器件将接受光学测试（如损耗测量）和直流电光测试（如直流调制响应）。 适用范围：该奖项允许两个具有互补能力的实验室进行合作，这些实验室目前正在独立进行类似的研究。 该奖项将允许Dagli博士访问Bilkent U。提供软件和所需的初步培训，并帮助土耳其科学家和一名研究生开始制造过程。 第二年，达格利将再次访问比尔肯特大学。在测试过程中工作，并将开发的技术和获得的经验转移到他在UCSB的实验室。 该奖项由INT和电气和通信系统部门共同资助。

Description: This award is to support a collaborative project between Dr. Nadir Dagli, Department of Electrical and Computer Science at the University of California, Santa Barbara (UCSB) and Dr. Atilla Aydinli, Department of Physics, Bilkent University, Ankara, Turkey. The purpose of this research is to develop guided-wave polarization sensitive couplers and polarization converters in GaAs/AlGaAs material system, and eventually to use these components in the realization of polarization independent ultra fast traveling wave electrooptic modulators. Current work at UCSB has produced traveling wave electrooptic modulators with electric bandwidth in excess of 40 GHz. These modulators have relatively high switching voltages, excessive loss in coupling with optical fiber, and work only for TE polarization. The planned work will seek the production of devices with low switching voltage and low fiber coupling losses. The work proposed includes transfer of software developed at UCSB to the Bilkent team to use it in producing the modulator devices. These devices, and others produced at UCSB, will be subjected to optical tests such as loss measurements, and DC electrooptic tests such as the DC modulation response. Scope: This award allows for collaboration by two laboratories with complementary capabilities who are currently carrying out similar research independently. The award will allow visits by Dr. Dagli to Bilkent U. to provide the software and the required initial training and to help the Turkish scientist and a graduate student start the fabrication process. In the second year Dagli will again visit Bilkent U. to work on the testing process and to transfer the technology developed and the experience gained to his laboratory at UCSB. This award is funded jointly by INT and the Division of Electrical and Communication Systems.