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

描述：该奖项是为了支持加州大学圣巴巴拉分校(UCSB)电气和计算机科学系Nadir Dagli博士和土耳其安卡拉Bilkent大学物理系Atilla Aydinli博士之间的一个合作项目。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，并最终将这些器件用于实现与偏振无关的超快行波电光调制器。UCSB目前的工作已经生产出电带宽超过40 GHz的行波电光调制器。这些调制器具有较高的开关电压，与光纤耦合损耗过大，仅对TE偏振起作用。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。拟议的工作包括将在UCSB开发的软件转移到Bilkent团队，以便在生产调制器设备时使用它。这些设备和UCSB生产的其他设备将接受光学测试，如损耗测量，以及直流电光测试，如直流调制响应。范围：该奖项允许目前独立开展类似研究的两个能力互补的实验室进行合作。该奖项将允许达格利博士访问比尔肯特大学，提供软件和所需的初步培训，并帮助这位土耳其科学家和一名研究生开始制造过程。第二年，Dagli将再次访问比尔肯特大学，研究测试过程，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和电气和通信系统司联合资助。

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.