All Single-Mode-Fiber Supercontinuum Source Setup for Monitoring of Multiple Gases Applications
| Autor: | E. Gallegos-Arellano, Maria Susana Avila-Garcia, Julian M. Estudillo-Ayala, Humberto Ramírez-Gasca, Roberto Rojas-Laguna, J. A. Martin-Vela, Daniel Jauregui-Vazquez, Juan Manuel Sierra-Hernández |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
gas sensing
absorption spectroscopy Letter Materials science Optical fiber Absorption spectroscopy 02 engineering and technology lcsh:Chemical technology 01 natural sciences Biochemistry multiple gases supercontinuum source Spectral line Analytical Chemistry law.invention 010309 optics law 0103 physical sciences lcsh:TP1-1185 Electrical and Electronic Engineering Spectroscopy Instrumentation fiber optics business.industry Single-mode optical fiber real-time monitoring 021001 nanoscience & nanotechnology Atomic and Molecular Physics and Optics Supercontinuum Wavelength Optoelectronics broadband HITRAN 0210 nano-technology business fiber optic measurements |
| Zdroj: | Sensors, Vol 20, Iss 3239, p 3239 (2020) Sensors (Basel, Switzerland) |
| ISSN: | 1424-8220 |
| Popis: | In this paper, a gas sensing system based on a conventional absorption technique using a single-mode-fiber supercontinuum source (SMF-SC) is presented. The SC source was implemented by channeling pulses from a microchip laser into a one kilometer long single-mode fiber (SMF), obtaining a flat high-spectrum with a bandwidth of up to 350 nm in the region from 1350 to 1700 nm, and high stability in power and wavelength. The supercontinuum radiation was used for simultaneously sensing water vapor and acetylene gas in the regions from 1350 to 1420 nm and 1510 to 1540 nm, respectively. The experimental results show that the absorption peaks of acetylene have a maximum depth of approximately 30 dB and contain about 60 strong lines in the R and P branches, demonstrating a high sensitivity of the sensing setup to acetylene. Finally, to verify the experimental results, the experimental spectra are compared to simulations obtained from the Hitran database. This shows that the implemented system can be used to develop sensors for applications in broadband absorption spectroscopy and as a low-cost absorption spectrophotometer of multiple gases. |
| Databáze: | OpenAIRE |
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