反射型聚合物电光调制器的研制

本项目提出了一种在结构和原理上全新的反射型聚合物波导电光调制器，这种器件不仅具有制备工艺简单、成本低廉的优点，而且可以实现多路调制。本项目的研究重点是改善光束质量、改进电极的制备工艺和高性能材料的设计和合成，使反射型聚合物波导电光调制器的调制带宽、工作电压和稳定性能指标达到实用的目标。

High-speed electrooptic modulators with Mach-Zehnder interferometer (MZI) architecture have been widely used in analog fiber-optic transmission systems, community access television (CATV) distribution systems and wavelength division multiplexing (WDM) telecommunication systems, owing to its low half-wave voltage and high bandwidth. However, the critical issues influencing the utilization with MZI configuration are the complexity of fabrication and high price. Recently, electrooptic polymers attracted extensive attention due to its low dispersion, ease of deposition onto many substrates and the ability to integrate the active polymer into an optical circuit. In this program, a polymer modulator based on the attenuated total reflection (ATR) geometry has been proposed. Initial results have showed that the new modulator not only can make up the deficits of the MZI architecture. It has also demonstrated the potential in application of the CATV system, communication between buildings and fiber enter homes due to its low cost. Double channel modulation has also been demonstrated in a single ATR configuration.