Fiber loop ring down spectrometer optical based sensor for trace chemical detection

Date

2016-04-11

Author

Yolalmaz, Alim
Esentürk, Okan
Danışman, Mehmet Fatih
Hanifehpour, Farhad

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Fiber loop ring down (FLRD) is a time domain multi-functional sensing, characterization, detection technique. FLRD technique is used to sense temperature, pressure, strain, biological cells, refractive index, and chemical species. FLRD has high accuracy, high selectivity, ability of remote control and rapid response. In this project, two FLRD spectrometers working at 800 nm (figure 1) and 1535 nm (figure 2) were set up for sensing different chemical analytes like C2H2, CO2, Ar, N2, DMSO, DMF, H2O, C2H6O, C3H6O. After modification of sensor region parameters like diameter and length of etched fiber, interaction distance of sample and laser pulse, many of specified samples have been detected and characterized until now. Recently the spectrometers have been improved for sensing low concentration of analytes and methodology has been developed for experimental process. In future, FLRD spectrometers will be used for detection of dangerous trace chemicals CO, NO, etc. We also have worked with etched fiber and we have looked for the best geometrical parameters for both weak and strong absorbers. Moreover, we plan to use hollow and holey fiber to set up FLRD spectrometers to decrease minimum detectable concentration.

URI

https://hdl.handle.net/11511/76040

Conference Name

14th IUVSTA School on Nano-Optics,(11 - 15 April 2016)

Collections

Department of Chemistry, Conference / Seminar

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Citation Formats

A. Yolalmaz, O. Esentürk, M. F. Danışman, and F. Hanifehpour, “Fiber loop ring down spectrometer optical based sensor for trace chemical detection,” presented at the 14th IUVSTA School on Nano-Optics,(11 - 15 April 2016), Braga, Portugal, 2016, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/76040.