A fiber-optic UV sensor based on a side-polished single mode fiber covered with azobenzene dye-doped polycarbonate

作者：Kim Kwang Taek^*; Il Moon Nam; Kim Hyun Kyoung

来源：Sensors and Actuators A: Physical , 2010, 160(1-2): 19-21.

DOI：10.1016/j.sna.2010.01.032

• UV sensor
• Side-polished fiber
• UV sensitive polymer
• Azobenzene

A fiber-optic UV sensor based on azobenzene dye-doped polycarbonate film coated on a side-polished single mode fiber is proposed and demonstrated. The change of the refractive index of the film by exposure to UV results in a shift of the resonance wavelength in the device. The repeatable operation of the sensor is verified. The sensitivity, which is the shift of resonance wavelength per unit UV power density, is measured to be 2.35 nm/(mW/cm(2)). The response time of the sensor is shown to be 26s.

• 出版日期2010-5