Fibre optic techniques for remote spectroscopic methane detection—from concept to system realisation

Design of Nanostructured Functional Coatings by Using Wet-Chemistry Methods

“…Due to all these potential advantages, the scientific community is continuously developing novel market niches for its implementation in a wide variety of different areas such as environmental monitoring, biomedicine, food or chemical industry, gas sensing, clinical analysis or safety at work [110][111][112][113]. An important consideration is that the optical fiber field has shown a considerable growth thanks to the implementation and development of nanostructured thin films onto diverse optical fiber configurations.…”

Applications and Optoelectronic Methods of Detection of Ammonia

“…The method required that the target gas possessed suitable gas absorption bands within the spectral transmission window of the optical fibre. Culshaw et al (1998) have surveyed some of the system topologies that may be used with laser-based optical gas detection systems and quantified the expected system sensitivities, which are of the order of less than 1 ppm. Stewart et al (2004) and Whitenett et al (2004) have realised some of these topologies, which included a Distributed FeedBack (DFB) wavelength modulated laser cavity ring-down approach that showed a methane detection sensitivity of 50 ppm.…”

A Method for the Measurement of Methane Gas Based on Multi-beam Interferometry

“…Besides, the current of the power is relatively high in order to drive the sensor for long distance. Moreover, the accuracy of the method is low because the palladium is sensitive to any gas other than methane [2].…”