Journal of Sensors / 2009 / Article / Tab 1

Research Article

Remote System for Detection of Low-Levels of Methane Based on Photonic Crystal Fibres and Wavelength Modulation Spectroscopy

Table 1

Theoretical diffusion times to obtain 90% average methane concentration in the core of HC-PCF fibres for different lengths.

One open endTwo open ends
(m)t (s)t (min)t (s)t (min)

0.02160.2740.07
0.061362.27340.57
0.18122020.333055.08
0.5410980183274545.75

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