Nonlinear photonic crystal devices

摘要ECCS-0801684B。W.Wessels，西北大学智力优势：光子晶体(PC)已被提出用于高比特率光纤通信和信息处理系统的许多光学设备。其中包括可调光开关和超宽带调制器。为了提高这些器件的带宽，提出了非线性光子晶体波导结构。铁电氧化物由于具有较大的光学非线性、光稳定性和热稳定性，将被广泛使用。近年来，随着低损耗、外延铁电薄膜光波导和低V电光调制器的发展，一些适用于光信号处理的高带宽器件成为可能。这项工作建立在我们最近展示的BaTiO_3铁电薄膜的电光系数为360-440 pm/V的基础上，将制作用于超宽带(100 GHz)工作的非线性光子晶体波导器件。器件将由非线性氧化物波导制成，包括一维和二维光子晶体电光调制器和光开关。器件将使用气相外延沉积，以及传统的光刻和纳米光刻来制造。限制带宽的因素将通过建模和测试来确定。将测量它们的传输、工作参数和带宽。使用薄膜铁电技术将实现多个器件与单一平台的芯片级集成。更广泛的影响：通过使用具有较大光学非线性的非线性光子晶体，与传统器件相比，有望在带宽、工作电压和尺寸方面有显著改善。该计划将包括本科生和研究生的培训以及对K-12学生的指导。将通过相关的STTR计划以及工业和政府实验室实习来进行工业推广。

AbstractECCS-0801684B. W. Wessels, Northwestern UniversityIntellectual merit: Photonic crystals (PC) have been proposed for a number of optical devices for high bit rate fiber-optic communication and information processing systems. These include tunable optical switches and ultra-wide bandwidth modulators. Non-linear photonic crystal waveguide structures are proposed for improving the bandwidth of these devices. Ferroelectric oxides will be used due to their large optical non-linearities and photo and thermal stability. With the recent development of low-loss, epitaxial ferroelectric thin film waveguides and low V electro-optic modulators, a number of high bandwidth devices suitable for optical signal processing are possible. This work builds on our recent demonstration of thin film ferroelectric BaTiO3 with electro-optic coefficients of 360-440 pm/V. Non-linear photonic crystal waveguide devices will be fabricated for ultra-wideband frequency operation (100 GHz). Devices will be fabricated from the non-linear oxide waveguides including 1-D and 2-D photonic crystal eo modulators and optical switches. Devices will be fabricated using vapor phase epitaxial deposition, and both conventional photolithography and nanolithography. Factors limiting bandwidth will be determined through modeling and testing. Their transmission, operating parameters and bandwidth will be measured. Chip-scale integration of several devices with a single platform will be pursued using thin film ferroelectric technology.Broader impact: By using non-linear photonic crystals with large optical non-linearities, significant improvements in bandwidth, operating voltage, and size are expected compared to conventional devices. The program will involve training of undergraduates, and graduate students as well as mentoring K-12 students. Industrial outreach through related STTR programs and industrial and government lab internships will be pursued.