.An optical fiber hydrogen sensor with Pd/Ag film[J].Optoelectronics Letters,2009,5(3):220-223 An optical fiber hydrogen sensor with Pd/Ag film 崔陆军  陈幼平  张冈 School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China ? Abstract:       A 20 nanometer palladium-silver (Pd/Ag) ultra-thin film was used for hydrogen gas sensing. The atomic ratio of Pd: Ag was 3:1, the thin film was evaporated on the optical glass, the Pd/Ag alloy could increase the life and provide the stability of the sensing film. The artificial neutral network was used for processing the data collected from the optical fiber bundle hydro-gen sensor, which could enhance the measuring accuracy, at the same time, the intrinsic and extrinsic influences were eliminated mainly. Experimental results and numerical simulation show the training method available, a linear precision of 0.1% for the optical hydrogen sensor is achieved. Hits: 4031 Download times: 210 View Full Text    Download reader