Haruna M, Koyama J
Osaka University, Faculty of Engineering, Electronics Department, 2-1 Yamada-Oka, Suita, Osaka 565, Japan.
Appl Opt. 1982 Oct 1;21(19):3461-5. doi: 10.1364/AO.21.003461.
New types of active optical device in glass such as deflectors and modulators/switches using the thermooptic effect originating from the temperature dependence of the refractive index are proposed and demonstrated. Thermally induced index changes for light deflection and switching are provided by applying an appropriate voltage to a small film heater deposited on the glass surface. Thermooptic waveguide switches fabricated by the ion-exchange technique successfully exhibited a switching speed of the order of 1 msec with 0.5-W driving electric power.
提出并演示了玻璃中的新型有源光学器件，如利用折射率随温度变化的热光效应的偏转器和调制器/开关。通过向沉积在玻璃表面的小型薄膜加热器施加适当电压，可实现光偏转和开关所需的热致折射率变化。采用离子交换技术制造的热光波导开关，在0.5瓦驱动电功率下，成功实现了约1毫秒的开关速度。
