Novel Langmuir–Blodgett-film toxic-gas sensors that have a Ti:LiNbO3 integrated optical Mach–Zehnder interferometer structure are experimentally investigated. The gas-sensing properties of the sensors are obtained for NO2, Cl2, NH3, and H2S by means of the detection of optical output changes. All the optical connections are made with optical fiber pigtails.
© 1996 Optical Society of America
Original Manuscript: April 22, 1996
Published: October 15, 1996
Chen Fushen, Liu Yunqi, Liang Qu, and Xu Yu, "Effects of Langmuir–Blodgett-film gas sensors with integrated optical interferometers," Opt. Lett. 21, 1700-1702 (1996)