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.

We are committed to sharing findings related to COVID-19 as quickly and safely as possible. Any author submitting a COVID-19 paper should notify us at to ensure their research is fast-tracked and made available on a preprint server as soon as possible. We will be providing unlimited waivers of publication charges for accepted articles related to COVID-19. Sign up here as a reviewer to help fast-track new submissions.