摘要
本文首次提出利用热光效应构成△β倒相结构的定向耦合器的设想,并在玻璃衬底上作出了具有两对薄膜热子的实验器件.在|kHz|防波调制电压下,用配有12位高速(A/D)变换器的微机.对定向耦合器的光输出进行分析,表明这种器件实现了全开、全关态,由于该类器件对入射光偏振状态无选择性,在短波工作时无光损伤以及容易制作,这类器件可望在对响应速率要求不高的场合获得应用.
A conception of thermo-optic switched directional coupler with reversed Δβ is proposed and a testing device with two paires of electric heaters has been fabricated on glass substrate. At 1 kHz square wave voltage modulation, analyzing optical output power from the device by using a high speed 12-bit A/D converter connected with a computer, shows that both a bar-state and a cross-state have been obtained. Because glass waveguides are optical damage-free, polarization-insen sitive, and easy to fabricate, the device can be widely used in the cases that do not require high speeds.
出处
《光学学报》
EI
CAS
CSCD
北大核心
1989年第10期951-954,共4页
Acta Optica Sinica
基金
四川省科委科学基金资助
关键词
热光效应
定向耦合器
玻璃波导
Thermo-optic effect
directional coupler
glass waveguide
ion exenange.
