"Integrated Magneto-Optical Devices for Microwave & Optical Signal Processing"

“微波集成磁光器件

• 批准号: 8902692
• 负责人: Daniel Stancil
• 金额: $ 22.83万
• 依托单位: Carnegie-Mellon University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-08-01 至 1993-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8902692&HistoricalAwards=false
• 关键词: Integrated; Magneto; Optical; Devices; Microwave

Stable single mode laser sources and optical heterodyne receivers are needed for high capacity single-mode fiber communications systems. An important component for both sources and receivers is an optical frequency translator. This device yields a frequency-shifted replica of an input optical signal. Ideally the amount of the frequency shift should be electronically controllable. Frequency translators are also needed for heterodyne optical spectroscopy. The PI has recently demonstrated optical frequency shift of up to 12 GHz using interactions with microwave magnetostatic waves in magnetic garnet thin films. Shifts of up to + 20 GHz should be possible using this technique. Advantages over electro-optical and acousto-optical frequency translators include single-sideband frequency shifts, continuous electronic tunability over the range 1-20 GHz via a magnetic bias field, selectable up or down frequency shifts, and a frequency-independent output beam angle.

高容量单模光纤通信系统需要稳定的单模激光源和光外差接收器。 光频率转换器是信号源和接收器的重要组件。 该设备产生输入光信号的频移复制品。 理想情况下，频移量应该是电子可控的。 外差光谱学也需要频率转换器。 PI 最近通过与磁性石榴石薄膜中微波静磁波的相互作用证明了高达 12 GHz 的光学频移。 使用这种技术应该可以实现高达 + 20 GHz 的偏移。 相对于电光和声光频率转换器的优点包括单边带频移、通过偏置磁场在 1-20 GHz 范围内连续电子可调谐、可选择向上或向下频移以及与频率无关的输出光束角度。