Title :
A Novel Surface Acoustic Wave Sensor for Optical Lens Surface Dirt Detection
Author :
Jiuling Liu ; Minghua Liu ; Wen Wang ; Shitang He
Author_Institution :
Inst. of Acoust., Beijing, China
Abstract :
This paper presents a novel SAW sensor on ST-X quartz substrate with excellent long-term stability for on-line monitoring towards the dirt retention on the surfaces of the optical lenses. New designs are done on the SAW resonators acting as the feedback of the oscillator to decrease the insertion loss and to achieve single-mode control, resulting in superior long-term frequency stability of the oscillator.
Keywords :
lenses; optical design techniques; optical feedback; optical losses; optical testing; quartz; surface acoustic wave resonators; surface acoustic wave sensors; SAW resonators; ST-X quartz substrate; feedback; insertion loss; long-term frequency stability; optical lens surface dirt detection; oscillator; single-mode control; surface acoustic wave sensor; Circuit stability; Optical resonators; Optical surface waves; Oscillators; Resonant frequency; Surface acoustic waves; Thermal stability; long-term frequency stability; sensor; surface acoustic wave (SAW);
Conference_Titel :
Green Computing and Communications (GreenCom), 2013 IEEE and Internet of Things (iThings/CPSCom), IEEE International Conference on and IEEE Cyber, Physical and Social Computing
Conference_Location :
Beijing
DOI :
10.1109/GreenCom-iThings-CPSCom.2013.305
