Multi-parameter measurements using optical fibre long period gratings for indoor air quality monitoring
| Autor: | Derrick Crump, Ralph P. Tatam, Frank Davis, Seung-Woo Lee, Stephen W. James, Jiri Hromadka, Matthew Partridge, Sergiy Korposh |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Optical fiber business.industry 02 engineering and technology 021001 nanoscience & nanotechnology Multiplexing law.invention Wavelength 020210 optoelectronics & photonics Indoor air quality Optics Sensor array law Long period 0202 electrical engineering electronic engineering information engineering Relative humidity 0210 nano-technology business Multi parameter |
| Zdroj: | SPIE Proceedings. |
| ISSN: | 0277-786X |
| Popis: | An array of three long period gratings (LPGs) fabricated in a single optical fibre and multiplexed in the wavelength domain was used to measure simultaneously temperature, relative humidity (RH) and volatile organic compounds (VOCs). Each LPG sensor was designed to optimize its response to a desired measurand. The LPGs were fabricated with periods such that they operated at or near the phase matching turning point. The sensors were calibrated in the laboratory and the simultaneous measurement of the key indoor air quality parameters was undertaken in laboratory and office environments. It was demonstrated successfully that the data produced by the LPG sensor array under real conditions was in a good agreement with that produced by commercially available sensors. Further, the potential application of fibre optic sensors for VOCs detection at high levels has been demonstrated. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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