| Title: | Optical detection of volatile organic compounds using selective tensile effects of a polymer-coated fiber Bragg grating |
| Author(s): | Park CS; Han Y; Joo KI; Lee YW; Kang SW; Kim HR; |
| Address: | "Department of Sensor and Display Engineering, Kyungpook National University, Daegu 702-701, Korea" |
| ISSN/ISBN: | 1094-4087 (Electronic) 1094-4087 (Linking) |
| Abstract: | "We demonstrated a novel selective chemical sensing approach by incorporating a poly(dimethylsiloxane) (PDMS)-coated fiber Bragg grating (FBG) structure for optically detecting various volatile organic compounds (VOC's). When the proposed structure is exposed to a nonpolar solvent, a tensile stress is induced between the coated PDMS and the optical fiber by a VOC-dependent swelling effect of the PDMS, which results in a Bragg wavelength shift dependent on the concentration and the type of VOC's. Because of no need of an etching process of a fiber cladding, the proposed PDMS-coated FBG can be used as a simple, convenient, and durable chemical sensing element with a high sensitivity, compared with conventional FBG sensors requiring an evanescent wave coupling" |
| Keywords: | Dimethylpolysiloxanes/*chemistry Fiber Optic Technology/*methods *Optical Fibers Solubility Spectrum Analysis *Tensile Strength Time Factors Volatile Organic Compounds/*analysis; |
| Notes: | "MedlinePark, Chang-sub Han, Yeonjeong Joo, Kyung-Il Lee, Yong Wook Kang, Shin-Won Kim, Hak-Rin eng Research Support, Non-U.S. Gov't 2010/12/18 Opt Express. 2010 Nov 22; 18(24):24753-61. doi: 10.1364/OE.18.024753" |
