Journal of Sensors / 2009 / Article / Fig 3

Research Article

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

Figure 3

(a) Project of the sensing head with periodic openings in the PCF fibre; (b) butt-coupling of HC-PCF pieces using standard zirconium ferrules connected with a standard zirconium mating sleeve.
398403.fig.003a
(a)
398403.fig.003b
(b)

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