Plastic Optical Fiber Refractive Index Sensor Employing an In-Line Submillimeter Hole
- Authors
- Shin, Jong-Dug; Park, Jaehee
- Issue Date
- 1-Oct-2013
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- Keywords
- Fiber optic sensors; plastic optical fiber; refractive index sensors; microstructure fabrication
- Citation
- IEEE PHOTONICS TECHNOLOGY LETTERS, v.25, no.19, pp.1882 - 1884
- Journal Title
- IEEE PHOTONICS TECHNOLOGY LETTERS
- Volume
- 25
- Number
- 19
- Start Page
- 1882
- End Page
- 1884
- URI
- http://scholarworks.bwise.kr/ssu/handle/2018.sw.ssu/11145
- DOI
- 10.1109/LPT.2013.2278973
- ISSN
- 1041-1135
- Abstract
- An in-line submillimeter hole fabricated by micro-drilling plastic optical fiber (POF) directly has been proposed as a compact refractive index sensor. Since the hole behaves as a concave lens if it is filled with a liquid having lower refractive index than that of the fiber core, transmittance increases in proportion to the refractive index. Analysis of the sensor transmittance has been performed using a simple ray optics model. Through immersing a 1.5-mm POF with a 0.35-mm-radius hole into various liquids, transmittance of the sensor has been measured at 670 nm. It has been shown that the experimental and analytical results are in excellent agreement.
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