Title :
Lithium niobate optical sensing chip for portable instrument
Author :
Twu, Ruey-Ching ; Hou, Hong-Yao ; Lee, Yi-Huan
Author_Institution :
Dept. of Electro-Opt. Eng., Southern Taiwan Univ., Yung-Kang, Taiwan
Abstract :
In this paper, we demonstrated an optical lithium niobate sensing chip (LNSC) by integrating an optical waveguide phase modulator and an evanescent field-based waveguide sensor on the same chip. The repeatable phase measurements based on a homodyne metrology are achievable by injecting evaporative ethanol (concentration: 95%) liquid onto the surface of sensing transducer. The proposed sensing chip effectively reduces the volume of the optical interferometer setup that can potentially provide a compact platform for a portable optical instrument.
Keywords :
fibre optic sensors; homodyne detection; light interferometers; optical modulation; optical waveguides; phase measurement; phase modulation; portable instruments; evanescent field based waveguide sensor; evaporative ethanol; homodyne metrology; optical interferometer; optical lithium niobate sensing chip; optical waveguide phase modulator; portable optical instrument; repeatable phase measurements; sensing transducer; Biosensors; Electrooptical waveguides; Phase locked loops; Phase modulation; Switches; Zinc;
Conference_Titel :
Micro-NanoMechatronics and Human Science (MHS), 2010 International Symposium on
Conference_Location :
Nagoya
Print_ISBN :
978-1-4244-7995-5
DOI :
10.1109/MHS.2010.5669550
