Properties of Specialist Fibres and Bragg Gratings for Optical Fiber Sensors
Figure 2
All-fibre add-drop acetylene reference cell using a photonic crystal fibre (a). Spectra for both single pass and double pass of the cell are shown (b) [26]. (EDF-erbium doped fibre source, OSA-optical spectrum analyser, SMF-standard single mode fibre smf 28, PCF-photonic crystal fibre: scanning electron microscope image of cross-section shown above -axis).
