Sensing of Carbon Dioxide and Hydrocarbons Using Photonic Bandgap Fiber

Abstract

The sensing setup for detection and measurement of carbon dioxide and methane was designed. Absorption spectra of many compounds indicate several weak peaks around 1400-1600 nm wavelength. Thus, tunable lasers with 20 micron core photonic bandgap fiber matching above wavelengths were chosen for the optical measurement system. Measurements were performed at low pressure to eliminate pressure broadening effect and to sharpen the absorption peaks. The angled cut was performed to improve signal to noise ratio.

A tiny gas-sensor system based on 1D photonic crystal

“…The application of photonic crystals as gas sensors in the area of research seems to be very promising due to their miniaturization, high spectral sensitivity, portability, and security. Another interesting approach, based on photonic bandgap fibers (PBGF), is specifically used for the A tiny gas-sensor system based on 1D photonic crystal A Bouzidi 1 , D Bria 1,2 , A Akjouj 2 , Y Pennec 2 and B Djafari-Rouhani 2 concentration measurement of carbon dioxide [22], acetylene and hydrogen cyanide [23], or ammonia gases [24].…”