CMOS Compatible Optical Leaky Wave Antennas and Devices

摘要：目的：研究基于硅微扰的平面介质波导的CMOS兼容电控漏波光学天线。所有半导体扰动中的介电常数和损耗等各种参数的分布式电子调谐可以控制漏波辐射的传播相位和衰减常数，从而控制输出辐射功率和分布。智力优势：提出的研究导致具有可调谐能力的高度定向光学天线，需要一个单一的馈电点，而不是诉诸于光阵列，需要大量的电子控制光波导和相对相移。所提出的研究的智力价值在于通过使用具有半导体扰动的介电波导来实现这一目标，其中载流子浓度的调谐导致可调谐的漏波辐射。更广泛的影响：提出的研究将最终导致辐射功率的快速电子控制，使新型光调制器和开关的发展成为可能。CMOS兼容性、集成电子控制、低成本和可能的系统集成是所提出的光子器件的关键属性，可用于光通信、微波光子学和芯片级光传感。教育外展活动旨在通过现场演示、公共实验室参观和基于网络的远程学习工具，使这一主题对广大受众具有可访问性和吸引力。特别是，准备特别示范和暑期课程将吸引传统上代表性不足的群体，并促进全国范围内物理科学和工程专业的入学率增加。

ABSTRACTObjective: The objective of this research is to develop CMOS compatible electronically controlled leaky wave optical antennas, based on planar dielectric waveguides with a set of silicon perturbations. Distributed electronic tuning of various parameters like permittivity and losses in all the semiconductor perturbations results in controlling the propagation phase and attenuation constants of the leaky wave radiation, and hence the output radiation power and profile.Intellectual Merit: The proposed research leads to highly directive optical antennas with tunable capabilities, that require a single feed point, instead of resorting to optical arrays that require a large number of electronically controlled optical waveguides and relative phase shifts. The intellectual merit of the proposed research lies in achieving this goal by using a dielectric waveguide with semiconductor perturbations in which the tuning of the carrier concentrations leads to tunable leaky wave radiation.Broader Impact: The proposed research will eventually lead to fast electronic control of the power radiated, enabling the development of novel optical modulators and switches. CMOS compatibility, integrated electronic control, low cost and possible system integration are key attributes of the proposed photonic devices, with applications in optical communications, microwave photonics and chip scale optical sensing. The educational outreach activities aim at making this subject accessible and attractive to a broad audience through live demonstrations, public lab tours, and web based distant learning tools. In particular, preparation of special demonstrations and summer programs will attract traditionally under-represented groups and facilitate the increase of enrollments to the physical sciences and engineering nationwide.