title: Response characterization of a fiber optic sensor array with dye-coated planar waveguide for detection of volatile organic compounds.
abstract: We have developed a multi-array side-polished optical-fiber gas sensor for the detection of volatile organic compound (VOC) gases. The side-polished optical-fiber coupled with a polymer planar waveguide (PWG) provides high sensitivity to alterations in refractive index. The PWG was fabricated by coating a solvatochromic dye with poly(vinylpyrrolidone). To confirm the effectiveness of the sensor, five different sensing membranes were fabricated by coating the side-polished optical-fiber using the solvatochromic dyes Reinhardt's dye, Nile red, 4-aminophthalimide, 4-amino-N-methylphthalimide, and 4-(dimethylamino)cinnamaldehyde, which have different polarities that cause changes in the effective refractive index of the sensing membrane owing to evanescent field coupling. The fabricated gas detection system was tested with five types of VOC gases, namely acetic acid, benzene, dimethylamine, ethanol, and toluene at concentrations of 1, 2,…,10 ppb. Second-regression and principal component analyses showed that the response properties of the proposed VOC gas sensor were linearly shifted bathochromically, and each gas showed different response characteristics.
authors.affiliation: School of Electronic Engineering, College of IT Engineering, Kyungpook National University, 1370 Sankyuk-dong, Bukgu, 702-701 Daegu, Korea. js1245@ee.knu.ac.kr.
authors.forename: Jae-Sung
authors.initials: JS
authors.lastname: Lee
authors.affiliation: Department of Sensor and Display Engineering, Kyungpook National University, 1370 Sankyuk-dong, Bukgu, 702-701 Daegu, Korea. duer135@naver.com.
authors.forename: Na-Rae
authors.initials: NR
authors.lastname: Yoon
authors.affiliation: Center for Functional Devices Fusion Platform, Kyungpook National University, 1370 Sankyuk-dong, Bukgu, 702-701 Daegu, Korea. bhkang@ee.knu.ac.kr.
authors.forename: Byoung-Ho
authors.initials: BH
authors.lastname: Kang
authors.affiliation: School of Electronic Engineering, College of IT Engineering, Kyungpook National University, 1370 Sankyuk-dong, Bukgu, 702-701 Daegu, Korea. sw3148@ee.knu.ac.kr.
authors.forename: Sang-Won
authors.initials: SW
authors.lastname: Lee
authors.affiliation: School of Electronic Engineering, College of IT Engineering, Kyungpook National University, 1370 Sankyuk-dong, Bukgu, 702-701 Daegu, Korea. gsaianandh@gmail.com.
authors.forename: Sai-Anand
authors.initials: SA
authors.lastname: Gopalan
authors.affiliation: School of Electronic Engineering, College of IT Engineering, Kyungpook National University, 1370 Sankyuk-dong, Bukgu, 702-701 Daegu, Korea. hmjeong@ee.knu.ac.kr.
authors.forename: Hyun-Min
authors.initials: HM
authors.lastname: Jeong
authors.affiliation: Department of Biomedical, School of Medicine, Dankook University, 119, Dandae-ro, Dongnam-gu, cheonan-si, 330-714 Chungnam, Korea. shalee@dankook.ac.kr.
authors.forename: Seung-Ha
authors.initials: SH
authors.lastname: Lee
authors.affiliation: Department of Electronics Engineering, Kyungil University, Hayang-up, Gyeongsang buk-do 712-702, Korea. dhkwon@kiu.ac.kr.
authors.forename: Dae-Hyuk
authors.initials: DH
authors.lastname: Kwon
authors.affiliation: School of Electronic Engineering, College of IT Engineering, Kyungpook National University, 1370 Sankyuk-dong, Bukgu, 702-701 Daegu, Korea. swkang@knu.ac.kr.
authors.forename: Shin-Won
authors.initials: SW
authors.lastname: Kang
mesh_terms: D004396:Coloring Agents / Q000737:chemistry*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005336:Fiber Optic Technology / Q000295:instrumentation*; D046228:Microarray Analysis / Q000295:instrumentation*; D020349:Surface Plasmon Resonance / Q000295:instrumentation*; D014159:Transducers; D055549:Volatile Organic Compounds / Q000032:analysis* / Q000737:chemistry
chemical_list: D004396:Coloring Agents; D055549:Volatile Organic Compounds