PMID- 21164823 OWN - NLM STAT- MEDLINE DCOM- 20110323 LR - 20181023 IS - 1094-4087 (Electronic) IS - 1094-4087 (Linking) VI - 18 IP - 24 DP - 2010 Nov 22 TI - Optical detection of volatile organic compounds using selective tensile effects of a polymer-coated fiber Bragg grating. PG - 24753-61 LID - 10.1364/OE.18.024753 [doi] AB - 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. FAU - Park, Chang-sub AU - Park CS AD - Department of Sensor and Display Engineering, Kyungpook National University, Daegu 702-701, Korea. FAU - Han, Yeonjeong AU - Han Y FAU - Joo, Kyung-Il AU - Joo KI FAU - Lee, Yong Wook AU - Lee YW FAU - Kang, Shin-Won AU - Kang SW FAU - Kim, Hak-Rin AU - Kim HR LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Opt Express JT - Optics express JID - 101137103 RN - 0 (Dimethylpolysiloxanes) RN - 0 (Volatile Organic Compounds) SB - IM MH - Dimethylpolysiloxanes/*chemistry MH - Fiber Optic Technology/*methods MH - *Optical Fibers MH - Solubility MH - Spectrum Analysis MH - *Tensile Strength MH - Time Factors MH - Volatile Organic Compounds/*analysis EDAT- 2010/12/18 06:00 MHDA- 2011/03/24 06:00 CRDT- 2010/12/18 06:00 PHST- 2010/12/18 06:00 [entrez] PHST- 2010/12/18 06:00 [pubmed] PHST- 2011/03/24 06:00 [medline] AID - 207218 [pii] AID - 10.1364/OE.18.024753 [doi] PST - ppublish SO - Opt Express. 2010 Nov 22;18(24):24753-61. doi: 10.1364/OE.18.024753.